Marquis V6-232 3.8L VIN 3 TBI (1985): Powertrain Management

Also for this vehicle: Marquis L4-140 2.3L VIN A 1-bbl (1986), Marquis L4-140 2.3L VIN A 2-bbl (1984), Marquis L6-200 3.3L VIN X 1-bbl (1983), Marquis V6-232 3.8L VIN C 2-bbl (1984).

Choose Sections to see everything in a chapter, or a chapter title to start at its first page.

1. 01Diagnostic Trouble Codes (DTC)Diagnostic Trouble Codes (DTC): Sections
2. 02Relays and ModulesRelays and Modules: Sections
3. 03Sensors and SwitchesSensors and Switches: Sections
4. 04MaintenanceMaintenance: Sections
5. 05Engine, Cooling and ExhaustEngine, Cooling and Exhaust: Sections
6. 06Powertrain ManagementPowertrain Management: Sections
   • Relays and Modules - Powertrain Management95 pages

     • Relays and Modules - Computers and Control Systems19 pages

       • Engine Control Module › Component Information13 pages

         • Technical Service Bulletins10 pages

           • All Technical Service Bulletins for Engine Control Module:5 pages

             • 852412 › Dec › 85 › Engine - Hesitation/Low Power/Stalling/Knocking
             • 8569 › Mar › 85 › Engine - Cold Engine Knock
             • 85519 › Mar › 85 › Engine - Hesitation On Cold Start Above 70 Degrees
             • 85424 › Feb › 85 › Engine - Knocking When Cold2
           • Customer Interest for Engine Control Module:5 pages

             • 852412 › Dec › 85 › Engine - Hesitation/Low Power/Stalling/Knocking
             • 8569 › Mar › 85 › Engine - Cold Engine Knock
             • 85519 › Mar › 85 › Engine - Hesitation On Cold Start Above 70 Degrees
             • 85424 › Feb › 85 › Engine - Knocking When Cold2
         • Diagrams › Diagram Information and Instructions23
       • Main Relay (Computer/Fuel System) › Component Information6 pages

         • Technical Service Bulletins › EEC IV Power Relay - Shop Manual Revisions/Updates234
         • Locations › Component Locations2
     • Relays and Modules - Fuel Delivery and Air Induction12 pages

       • Fuel Pump Relay › Component Information6 pages

         • Technical Service Bulletins2 pages

           • All Technical Service Bulletins for Fuel Pump Relay: › 90183 › Aug › 90 › Fuel Pump - Buzzing/Humming After Engine Shut Down
           • Customer Interest for Fuel Pump Relay: › 90183 › Aug › 90 › Fuel Pump - Buzzing/Humming After Engine Shut Down
         • Locations › Sedan2
         • Diagrams › Diagram Information and Instructions2
       • Main Relay (Computer/Fuel System) › Component Information6 pages

         • Technical Service Bulletins › EEC IV Power Relay - Shop Manual Revisions/Updates234
         • Locations › Component Locations2
     • Relays and Modules - Ignition System › Ignition Control Module › Component Information › Technical Service Bulletins64 pages

       • All Technical Service Bulletins for Ignition Control Module:32 pages

         • 872110 › Oct › 87 › TFI Module/PIP Sensor - New Diagnostic Procedure23456789101112131415161718192021222324
         • 861125 › Jun › 86 › Engine - Cranks/No Start/Stalls At Idle
         • 86219 › Jan › 86 › Ignition System Resistance - Manual Revision
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • Customer Interest:6 pages

         • 861125 › Jun › 86 › Engine - Cranks/No Start/Stalls At Idle
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • All Other Service Bulletins for Ignition Control Module:26 pages

         • 872110 › Oct › 87 › TFI Module/PIP Sensor - New Diagnostic Procedure23456789101112131415161718192021222324
         • 86219 › Jan › 86 › Ignition System Resistance - Manual Revision
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
   • Sensors and Switches - Powertrain Management172 pages

     • Sensors and Switches - Computers and Control Systems90 pages

       • Air Flow Meter/Sensor › Component Information › Description and Operation
       • Barometric Pressure Sensor › Component Information › Technical Service Bulletins › MAP and BAP Sensor - Application Chart2
       • Barometric Pressure Switch › Component Information2 pages

         • Description and Operation
         • Testing and Inspection › Component Testing
       • Camshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications23
       • Crankshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • EGR Valve Position Sensor › Component Information38 pages

         • Technical Service Bulletins › EVP Sensor - Manual Revision234567891011121314151617181920…36
         • Locations › Component Locations2
       • Idle Speed Motor Position Sensor › Component Information › Locations
       • Intake Air Temperature Sensor › Component Information › Specifications23
       • Knock Sensor › Component Information › Description and Operation
       • Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins16 pages

         • All Technical Service Bulletins for Manifold Pressure/Vacuum Sensor:8 pages

           • 89112 › Jan › 89 › MAP and BAP Sensor - Application Chart2
           • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
           • 851215 › Jul › 85 › Engine - Hesitation on Light Deceleration
           • 851217 › Jun › 85 › EEC IV MAP Sensor - New Part Numbers/Applications
           • 851218 › Jun › 85 › EEC IV MAP Sensor - New Service Part Released
           • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
         • Customer Interest:3 pages

           • 851215 › Jul › 85 › Engine - Hesitation on Light Deceleration
           • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
         • All Other Service Bulletins for Manifold Pressure/Vacuum Sensor:5 pages

           • 89112 › Jan › 89 › MAP and BAP Sensor - Application Chart2
           • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
           • 851217 › Jun › 85 › EEC IV MAP Sensor - New Part Numbers/Applications
           • 851218 › Jun › 85 › EEC IV MAP Sensor - New Service Part Released
       • Oxygen Sensor › Component Information › Technical Service Bulletins › EGO Sensors - Silicone Contamination2
       • Power Steering Pressure Switch › Component Information › Technical Service Bulletins › Engine Compartment Wiring - Connector Service
       • Throttle Position Sensor › Component Information › Technical Service Bulletins12 pages

         • All Technical Service Bulletins for Throttle Position Sensor:6 pages

           • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
           • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • Customer Interest:2 pages

           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • All Other Service Bulletins for Throttle Position Sensor:4 pages

           • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
           • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
           • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
       • Vehicle Speed Sensor › Component Information4 pages

         • Specifications2
         • Testing and Inspection › Speed Control/Speedometer2
     • Sensors and Switches - Emission Control Systems › EGR Valve Position Sensor › Component Information38 pages

       • Technical Service Bulletins › EVP Sensor - Manual Revision234567891011121314151617181920…36
       • Locations › Component Locations2
     • Sensors and Switches - Fuel Delivery and Air Induction22 pages

       • Air Flow Meter/Sensor › Component Information › Description and Operation
       • Idle Speed Motor Position Sensor › Component Information › Locations
       • Inertia Fuel Shutoff Switch › Component Information3 pages

         • Locations
         • Diagrams › Diagram Information and Instructions2
       • Throttle Position Sensor › Component Information › Technical Service Bulletins17 pages

         • All Technical Service Bulletins:6 pages

           • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
           • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • Customer Interest:2 pages

           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • All Other Service Bulletins for Throttle Position Sensor:9 pages

           • 88410 › Feb › 88 › Front/Rear Stabilizer Bar Bushings - Squeak/Grunt Noise234567
           • 8689 › Apr › 86 › Stabilizer Bar - Squeak/Grunt/Crunch Noise2
         • All Other Service Bulletins for Throttle Position Sensor:0 pages

           • 88410 › Feb › 88 › Front/Rear Stabilizer Bar Bushings - Squeak/Grunt Noise
           • 8689 › Apr › 86 › Stabilizer Bar - Squeak/Grunt/Crunch Noise
     • Sensors and Switches - Ignition System22 pages

       • Camshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • Crankshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • Hall Effect Sensor, Ignition › Component Information › Technical Service Bulletins › Distributor Stator - Replacement Procedure2345678910111213
       • Ignition Switch › Component Information › Technical Service Bulletins4 pages

         • All Technical Service Bulletins for Ignition Switch: › 932410 › Nov › 93 › Instrument Cluster Warning Lights - Dimly Lit2
         • Customer Interest for Ignition Switch: › 932410 › Nov › 93 › Instrument Cluster Warning Lights - Dimly Lit2
       • Knock Sensor › Component Information › Description and Operation
   • Tune-up and Engine Performance Checks34 pages

     • Fuel Pressure › System Information › Technical Service Bulletins4 pages

       • All Technical Service Bulletins for Fuel Pressure: › 85134 › Jul › 85 › Fuel System - Fuel Pressure Diagnosis2
       • By Symptom for Fuel Pressure: › 85134 › Jul › 85 › Fuel System - Fuel Pressure Diagnosis2
     • Idle Speed › System Information › Technical Service Bulletins4 pages

       • All Technical Service Bulletins for Idle Speed: › 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
       • Customer Interest for Idle Speed: › 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
     • Fuel Filter › Fuel Pressure Release › System Information › Service Precautions
     • Firing Order › Component Information › Specifications
     • Ignition Timing4 pages

       • Ignition Timing Connector › Component Information › Technical Service Bulletins › Ignition Timing - Spout Connector Locations2
       • Number One Cylinder › Component Information › Locations
       • Timing Marks and Indicators › System Information › Locations
     • Ignition Cable › Component Information › Technical Service Bulletins › Spark Plug/Coil Wire - Resistance, Manual Correction
     • Distributor, Ignition10 pages

       • Distributor Advance Unit › Component Information7 pages

         • Technical Service Bulletins4 pages

           • All Technical Service Bulletins for Distributor Advance Unit:2 pages

             • 85812 › Apr › 85 › Ignition System - Octane Rod Replacement Deletion
             • 8527 › Jan › 85 › Engine - Knocks When Cold
           • Customer Interest: › 8527 › Jan › 85 › Engine - Knocks When Cold
           • All Other Service Bulletins for Distributor Advance Unit: › 85812 › Apr › 85 › Ignition System - Octane Rod Replacement Deletion
         • Description and Operation › Vacuum Spark Advance Mechanism23
       • Distributor Plate W/ Pick-up Sensor › Component Information › Service and Repair
       • Vacuum Spark Delay Valve › Component Information › Testing and Inspection2
     • Spark Plug › Component Information › Technical Service Bulletins6 pages

       • All Technical Service Bulletins for Spark Plug:3 pages

         • 85814 › Apr › 85 › Spark Plugs - Shorting/Altered Scope Pattern
         • 8537 › Feb › 85 › Engine - Road Load Engine Surge Between 45/55 MPH
         • 841616S › Jan › 85 › Engine - Spark Knock/Hesitation/Surging
       • Customer Interest:2 pages

         • 8537 › Feb › 85 › Engine - Road Load Engine Surge Between 45/55 MPH
         • 841616S › Jan › 85 › Engine - Spark Knock/Hesitation/Surging
       • All Other Service Bulletins for Spark Plug: › 85814 › Apr › 85 › Spark Plugs - Shorting/Altered Scope Pattern
     • Valve Clearance › System Information › Specifications23
   • Computers and Control Systems243 pages

     • Air Flow Meter/Sensor › Component Information › Description and Operation
     • Intake Air Temperature Sensor › Component Information › Specifications23
     • Barometric Pressure Sensor › Component Information › Technical Service Bulletins › MAP and BAP Sensor - Application Chart2
     • Barometric Pressure Switch › Component Information2 pages

       • Description and Operation
       • Testing and Inspection › Component Testing
     • Camshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
     • Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications23
     • Crankshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
     • EGR Valve Position Sensor › Component Information38 pages

       • Technical Service Bulletins › EVP Sensor - Manual Revision234567891011121314151617181920…36
       • Locations › Component Locations2
     • Engine Control Module › Component Information13 pages

       • Technical Service Bulletins10 pages

         • All Technical Service Bulletins for Engine Control Module:5 pages

           • 852412 › Dec › 85 › Engine - Hesitation/Low Power/Stalling/Knocking
           • 8569 › Mar › 85 › Engine - Cold Engine Knock
           • 85519 › Mar › 85 › Engine - Hesitation On Cold Start Above 70 Degrees
           • 85424 › Feb › 85 › Engine - Knocking When Cold2
         • Customer Interest for Engine Control Module:5 pages

           • 852412 › Dec › 85 › Engine - Hesitation/Low Power/Stalling/Knocking
           • 8569 › Mar › 85 › Engine - Cold Engine Knock
           • 85519 › Mar › 85 › Engine - Hesitation On Cold Start Above 70 Degrees
           • 85424 › Feb › 85 › Engine - Knocking When Cold2
       • Diagrams › Diagram Information and Instructions23
     • Feedback Control Solenoid › Component Information › Specifications2
     • Idle Speed Motor Position Sensor › Component Information › Locations
     • Idle Speed/Throttle Actuator - Electronic › Component Information14 pages

       • Technical Service Bulletins12 pages

         • All Technical Service Bulletins for Idle Speed/Throttle Actuator - Electronic:6 pages

           • 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
           • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
           • 85138 › Jul › 85 › ISC Motor - High Engine Idle Speed
           • 851214 › Jul › 85 › Wiring Connectors - Engine Speed Increase2
         • Customer Interest:5 pages

           • 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
           • 85138 › Jul › 85 › ISC Motor - High Engine Idle Speed
           • 851214 › Jul › 85 › Wiring Connectors - Engine Speed Increase2
         • All Other Service Bulletins for Idle Speed/Throttle Actuator - Electronic: › 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
       • Description and Operation › DC Motor Idle Speed Control Actuator2
     • Idle Speed/Throttle Actuator - Mechanical › Component Information4 pages

       • Locations2
       • Testing and Inspection › Throttle Solenoid Positioner (TSP)2
     • Idle Up Control Valve › Component Information › Locations
     • Knock Sensor › Component Information › Description and Operation
     • Main Relay (Computer/Fuel System) › Component Information6 pages

       • Technical Service Bulletins › EEC IV Power Relay - Shop Manual Revisions/Updates234
       • Locations › Component Locations2
     • Malfunction Indicator Lamp › Component Information › Diagrams › Diagram Information and Instructions23
     • Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins16 pages

       • All Technical Service Bulletins for Manifold Pressure/Vacuum Sensor:8 pages

         • 89112 › Jan › 89 › MAP and BAP Sensor - Application Chart2
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
         • 851215 › Jul › 85 › Engine - Hesitation on Light Deceleration
         • 851217 › Jun › 85 › EEC IV MAP Sensor - New Part Numbers/Applications
         • 851218 › Jun › 85 › EEC IV MAP Sensor - New Service Part Released
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • Customer Interest:3 pages

         • 851215 › Jul › 85 › Engine - Hesitation on Light Deceleration
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • All Other Service Bulletins for Manifold Pressure/Vacuum Sensor:5 pages

         • 89112 › Jan › 89 › MAP and BAP Sensor - Application Chart2
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
         • 851217 › Jun › 85 › EEC IV MAP Sensor - New Part Numbers/Applications
         • 851218 › Jun › 85 › EEC IV MAP Sensor - New Service Part Released
     • Oxygen Sensor › Component Information › Technical Service Bulletins › EGO Sensors - Silicone Contamination2
     • Power Steering Pressure Switch › Component Information › Technical Service Bulletins › Engine Compartment Wiring - Connector Service
     • Relays and Modules - Computers and Control Systems23 pages

       • Engine Control Module › Component Information17 pages

         • Technical Service Bulletins14 pages

           • Customer Interest:5 pages

             • 852412 › Dec › 85 › Engine - Hesitation/Low Power/Stalling/Knocking
             • 8569 › Mar › 85 › Engine - Cold Engine Knock
             • 85519 › Mar › 85 › Engine - Hesitation On Cold Start Above 70 Degrees
             • 85424 › Feb › 85 › Engine - Knocking When Cold2
           • All Technical Service Bulletins:5 pages

             • 852412 › Dec › 85 › Engine - Hesitation/Low Power/Stalling/Knocking
             • 8569 › Mar › 85 › Engine - Cold Engine Knock
             • 85519 › Mar › 85 › Engine - Hesitation On Cold Start Above 70 Degrees
             • 85424 › Feb › 85 › Engine - Knocking When Cold2
           • All Other Service Bulletins for Engine Control Module:4 pages

             • 86163 › Aug › 86 › Fuel Pump/Sender - Erratic Operation Prevention
             • 85223 › Nov › 85 › Fuel Gauge - Fluctuating Reading While Driving23
           • All Other Service Bulletins for Engine Control Module:0 pages

             • 86163 › Aug › 86 › Fuel Pump/Sender - Erratic Operation Prevention
             • 85223 › Nov › 85 › Fuel Gauge - Fluctuating Reading While Driving
         • Diagrams › Diagram Information and Instructions23
       • Main Relay (Computer/Fuel System) › Component Information6 pages

         • Technical Service Bulletins › EEC IV Power Relay - Shop Manual Revisions/Updates234
         • Locations › Component Locations2
     • Sensors and Switches - Computers and Control Systems89 pages

       • Air Flow Meter/Sensor › Component Information › Description and Operation
       • Barometric Pressure Sensor › Component Information › Technical Service Bulletins › MAP and BAP Sensor - Application Chart2
       • Barometric Pressure Switch › Component Information2 pages

         • Description and Operation
         • Testing and Inspection › Component Testing
       • Camshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications23
       • Crankshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • EGR Valve Position Sensor › Component Information38 pages

         • Technical Service Bulletins › EVP Sensor - Manual Revision234567891011121314151617181920…36
         • Locations › Component Locations2
       • Intake Air Temperature Sensor › Component Information › Specifications23
       • Knock Sensor › Component Information › Description and Operation
       • Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins16 pages

         • All Technical Service Bulletins for Manifold Pressure/Vacuum Sensor:8 pages

           • 89112 › Jan › 89 › MAP and BAP Sensor - Application Chart2
           • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
           • 851215 › Jul › 85 › Engine - Hesitation on Light Deceleration
           • 851217 › Jun › 85 › EEC IV MAP Sensor - New Part Numbers/Applications
           • 851218 › Jun › 85 › EEC IV MAP Sensor - New Service Part Released
           • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
         • Customer Interest:3 pages

           • 851215 › Jul › 85 › Engine - Hesitation on Light Deceleration
           • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
         • All Other Service Bulletins for Manifold Pressure/Vacuum Sensor:5 pages

           • 89112 › Jan › 89 › MAP and BAP Sensor - Application Chart2
           • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
           • 851217 › Jun › 85 › EEC IV MAP Sensor - New Part Numbers/Applications
           • 851218 › Jun › 85 › EEC IV MAP Sensor - New Service Part Released
       • Oxygen Sensor › Component Information › Technical Service Bulletins › EGO Sensors - Silicone Contamination2
       • Power Steering Pressure Switch › Component Information › Technical Service Bulletins › Engine Compartment Wiring - Connector Service
       • Throttle Position Sensor › Component Information › Technical Service Bulletins12 pages

         • All Technical Service Bulletins for Throttle Position Sensor:6 pages

           • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
           • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • Customer Interest:2 pages

           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • All Other Service Bulletins for Throttle Position Sensor:4 pages

           • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
           • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
           • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
       • Vehicle Speed Sensor › Component Information4 pages

         • Specifications2
         • Testing and Inspection › Speed Control/Speedometer2
     • Throttle Position Sensor › Component Information › Technical Service Bulletins10 pages

       • All Technical Service Bulletins:6 pages

         • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
         • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
         • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
         • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
         • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
       • Customer Interest:2 pages

         • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
         • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
       • All Other Service Bulletins for Throttle Position Sensor: › 932410 › Nov › 93 › Instrument Cluster Warning Lights - Dimly Lit2
       • All Other Service Bulletins for Throttle Position Sensor: › 932410 › Nov › 93 › Instrument Cluster Warning Lights - Dimly Lit
     • Vehicle Speed Sensor › Component Information4 pages

       • Specifications2
       • Testing and Inspection › Speed Control/Speedometer2
   • Emission Control Systems167 pages

     • Air Injection35 pages

       • Air Injection Vacuum Control Solenoid Valve › Component Information › Locations2
       • Air Diverter Solenoid › Component Information › Locations
       • Air Diverter Valve › Component Information › Description and Operation › Air Bypass Valves234
       • Air Injection Bypass Valve › Component Information › Technical Service Bulletins8 pages

         • All Technical Service Bulletins for Air Injection Bypass Valve: › 89E77 › Aug › 89 › Recall - Thermactor Air Bypass Kit Installation234
         • Recalls for Air Injection Bypass Valve: › 89E77 › Aug › 89 › Recall - Thermactor Air Bypass Kit Installation234
       • Air Injection Check Valve › Component Information › Description and Operation › Air Check Valve2
       • Air Injection Control Valve › Component Information6 pages

         • Technical Service Bulletins › Air Supply Control Valves Revision On Manual2
         • Description and Operation › Combination Air Bypass/Air Control Valves234
       • Air Injection Filter › Component Information › Service and Repair
       • Air Injection Hose/Tube › Component Information › Service and Repair
       • Air Injection Manifold › Component Information › Service and Repair
       • Air Injection Pump › Component Information › Testing and Inspection2
       • Air Injection Relief Valve › Component Information › Service and Repair › Air Pump Relief Valve, Replace2
       • Pulsed Secondary Air Injection › Component Information › Description and Operation234
       • Thermal Vacuum Valve, Air Injection › Component Information › Description and Operation
     • Catalytic Converter › Component Information › Technical Service Bulletins10 pages

       • All Technical Service Bulletins: › 88E73 › Apr › 89 › Recall - Catalytic Convertor and Y-Pipe Replacement234
       • Recalls: › 88E73 › Apr › 89 › Recall - Catalytic Convertor and Y-Pipe Replacement234
       • All Other Service Bulletins for Catalytic Converter: › 85203 › Oct › 85 › Heater - Floor Duct Air Distribution Imbalance2
       • All Other Service Bulletins for Catalytic Converter: › 85203 › Oct › 85 › Heater - Floor Duct Air Distribution Imbalance
     • Early Fuel Evaporation (EFE)3 pages

       • EFE Solenoid › Component Information › Locations
       • EFE Valve › Component Information › Technical Service Bulletins2 pages

         • All Technical Service Bulletins for EFE Valve: › 84255 › Dec › 84 › Intake Heat Control Valve - Ticking Noise
         • Customer Interest for EFE Valve: › 84255 › Dec › 84 › Intake Heat Control Valve - Ticking Noise
     • Evaporative Emissions System17 pages

       • Bowl Vent Solenoid › Component Information › Description and Operation
       • Bowl Vent Valve › Component Information › Description and Operation › Auxiliary Fuel Bowl Vent Tube234
       • Canister Purge Control Valve › Component Information › Description and Operation
       • Canister Purge Solenoid › Component Information › Locations2
       • Evaporative Emission Control Canister › Component Information › Description and Operation
       • Fuel Overflow Reservoir › Component Information › Description and Operation
       • Liquid Vapor Separator, Evaporative System › Component Information › Description and Operation
       • Thermal Vacuum Valve - EVAP › Component Information › Description and Operation
       • Vacuum Delay Valve, EVAP › Component Information5 pages

         • Description and Operation › Cold Start Spark Hold (CSSH)2
         • Testing and Inspection › Delay Vacuum Bypass (DVB)23
     • Exhaust Gas Recirculation55 pages

       • EGR Control Solenoid › Component Information8 pages

         • Technical Service Bulletins5 pages

           • All Technical Service Bulletins:2 pages

             • 871015 › May › 87 › Engine - Light Surging/Bucking On Deceleration
             • 85135 › Jul › 85 › EGR Solenoids - Contamination
           • Customer Interest: › 871015 › May › 87 › Engine - Light Surging/Bucking On Deceleration
           • All Other Service Bulletins for EGR Control Solenoid: › 8575 › Apr › 85 › Starter - Remains Energized With Engine Running2
           • All Other Service Bulletins for EGR Control Solenoid: › 8575 › Apr › 85 › Starter - Remains Energized With Engine Running
         • Locations › Component Locations23
       • EGR Electronic Vacuum Regulator Solenoid › Component Information › Technical Service Bulletins › EGR Solenoids - Contamination
       • EGR Valve › Component Information7 pages

         • Technical Service Bulletins4 pages

           • All Technical Service Bulletins for EGR Valve:2 pages

             • 87715 › Apr › 87 › EGR Valve - New Service Part
             • 8537 › Feb › 85 › Engine - Road Load Engine Surge Between 45/55 MPH
           • Customer Interest: › 8537 › Feb › 85 › Engine - Road Load Engine Surge Between 45/55 MPH
           • All Other Service Bulletins for EGR Valve: › 87715 › Apr › 87 › EGR Valve - New Service Part
         • Testing and Inspection › EGR Venturi Vacuum Amplifier23
       • EGR Valve Position Sensor › Component Information38 pages

         • Technical Service Bulletins › EVP Sensor - Manual Revision234567891011121314151617181920…36
         • Locations › Component Locations2
       • Thermal Vacuum Valve, EGR › Component Information › Description and Operation
     • Positive Crankcase Ventilation › Positive Crankcase Ventilation Valve › Component Information › Description and Operation2
     • Sensors and Switches - Emission Control Systems › EGR Valve Position Sensor › Component Information38 pages

       • Technical Service Bulletins › EVP Sensor - Manual Revision234567891011121314151617181920…36
       • Locations › Component Locations2
     • Thermostatic Air Cleaner › Thermostatic Air Cleaner Vacuum Switch › Component Information6 pages

       • Description and Operation › Cold Weather Modulator23
       • Testing and Inspection › Air Cleaner Cold Weather Modulator23
     • Vacuum Restrictor › Component Information › Description and Operation
   • Fuel Delivery and Air Induction133 pages

     • Fuel Pressure › System Information › Technical Service Bulletins8 pages

       • All Technical Service Bulletins: › 85134 › Jul › 85 › Fuel System - Fuel Pressure Diagnosis2
       • By Symptom: › 85134 › Jul › 85 › Fuel System - Fuel Pressure Diagnosis2
       • All Other Service Bulletins for Fuel Pressure: › 8646 › Feb › 86 › A/C Evaporator - Cold Air Leaks/Cold Air Radiation234
       • All Other Service Bulletins for Fuel Pressure: › 8646 › Feb › 86 › A/C Evaporator - Cold Air Leaks/Cold Air Radiation
     • Fuel Pressure Release › System Information › Service Precautions
     • Idle Speed › System Information › Technical Service Bulletins4 pages

       • All Technical Service Bulletins for Idle Speed: › 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
       • Customer Interest for Idle Speed: › 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
     • Air Flow Meter/Sensor › Component Information › Description and Operation
     • Carburetor12 pages

       • Bowl Vent Solenoid › Component Information › Description and Operation
       • Carburetor Intake Manifold Spacer › Component Information › Technical Service Bulletins8 pages

         • All Technical Service Bulletins for Carburetor Intake Manifold Spacer:4 pages

           • 87310 › Feb › 87 › Engine - Rough Idle/Surging/Stalling
           • 862513 › Dec › 86 › Engine - Stumbling/Poor Acceleration/Stalling At Idle23
         • Customer Interest for Carburetor Intake Manifold Spacer:4 pages

           • 87310 › Feb › 87 › Engine - Rough Idle/Surging/Stalling
           • 862513 › Dec › 86 › Engine - Stumbling/Poor Acceleration/Stalling At Idle23
       • Carburetor Solenoid › Component Information › Description and Operation
       • Power Valve, Carburetor › Component Information › Technical Service Bulletins2 pages

         • All Technical Service Bulletins for Power Valve: › 852215 › Nov › 85 › Engine - Loss of Fuel Economy/Poor Drive Quality
         • Customer Interest for Power Valve: › 852215 › Nov › 85 › Engine - Loss of Fuel Economy/Poor Drive Quality
     • Fuel › Component Information › Technical Service Bulletins › Rotunda Gas Chek Kit - Requires Modification2
     • Fuel Filter › Fuel Pressure Release › System Information › Service Precautions
     • Fuel Hose Clamp › Component Information › Technical Service Bulletins › Fuel Filter - Replacement Information
     • Fuel Injector › Component Information4 pages

       • Technical Service Bulletins › Fuel System - Injector Tester/Cleaner Service Tips2
       • Diagrams › Diagram Information and Instructions2
     • Fuel Pump10 pages

       • Fuel Pressure › System Information › Technical Service Bulletins4 pages

         • All Technical Service Bulletins for Fuel Pressure: › 85134 › Jul › 85 › Fuel System - Fuel Pressure Diagnosis2
         • By Symptom for Fuel Pressure: › 85134 › Jul › 85 › Fuel System - Fuel Pressure Diagnosis2
       • Fuel Pump Relay › Component Information6 pages

         • Technical Service Bulletins2 pages

           • All Technical Service Bulletins for Fuel Pump Relay: › 90183 › Aug › 90 › Fuel Pump - Buzzing/Humming After Engine Shut Down
           • Customer Interest for Fuel Pump Relay: › 90183 › Aug › 90 › Fuel Pump - Buzzing/Humming After Engine Shut Down
         • Locations › Sedan2
         • Diagrams › Diagram Information and Instructions2
     • Fuel Supply Line › Component Information › Technical Service Bulletins4 pages

       • All Technical Service Bulletins for Fuel Supply Line: › 851411 › Jul › 85 › Engine - Poor Performance/Low Fuel Pressure2
       • Customer Interest for Fuel Supply Line: › 851411 › Jul › 85 › Engine - Poor Performance/Low Fuel Pressure2
     • Fuel Tank › Fuel Gauge Sender › Component Information › Technical Service Bulletins8 pages

       • All Technical Service Bulletins for Fuel Gauge Sender:4 pages

         • 86163 › Aug › 86 › Fuel Pump/Sender - Erratic Operation Prevention
         • 85223 › Nov › 85 › Fuel Gauge - Fluctuating Reading While Driving23
       • Customer Interest: › 85223 › Nov › 85 › Fuel Gauge - Fluctuating Reading While Driving23
       • All Other Service Bulletins for Fuel Gauge Sender: › 86163 › Aug › 86 › Fuel Pump/Sender - Erratic Operation Prevention
     • Idle Speed Motor Position Sensor › Component Information › Locations
     • Idle Speed/Throttle Actuator - Electronic › Component Information14 pages

       • Technical Service Bulletins12 pages

         • All Technical Service Bulletins for Idle Speed/Throttle Actuator - Electronic:6 pages

           • 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
           • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
           • 85138 › Jul › 85 › ISC Motor - High Engine Idle Speed
           • 851214 › Jul › 85 › Wiring Connectors - Engine Speed Increase2
         • Customer Interest:5 pages

           • 86910 › May › 86 › Engine - Idles Too Fast/Stalls At Idle2
           • 85138 › Jul › 85 › ISC Motor - High Engine Idle Speed
           • 851214 › Jul › 85 › Wiring Connectors - Engine Speed Increase2
         • All Other Service Bulletins for Idle Speed/Throttle Actuator - Electronic: › 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
       • Description and Operation › DC Motor Idle Speed Control Actuator2
     • Idle Speed/Throttle Actuator - Mechanical › Component Information4 pages

       • Locations2
       • Testing and Inspection › Throttle Solenoid Positioner (TSP)2
     • Idle Up Control Valve › Component Information › Locations
     • Idle/Altitude Compensator (Non Comp. Controlled) › Component Information › Description and Operation › Altitude Compensator2
     • Inertia Fuel Shutoff Switch › Component Information3 pages

       • Locations
       • Diagrams › Diagram Information and Instructions2
     • Intake Air Heater › Component Information › Locations
     • Main Relay (Computer/Fuel System) › Component Information6 pages

       • Technical Service Bulletins › EEC IV Power Relay - Shop Manual Revisions/Updates234
       • Locations › Component Locations2
     • Relays and Modules - Fuel Delivery and Air Induction12 pages

       • Fuel Pump Relay › Component Information6 pages

         • Technical Service Bulletins2 pages

           • All Technical Service Bulletins for Fuel Pump Relay: › 90183 › Aug › 90 › Fuel Pump - Buzzing/Humming After Engine Shut Down
           • Customer Interest for Fuel Pump Relay: › 90183 › Aug › 90 › Fuel Pump - Buzzing/Humming After Engine Shut Down
         • Locations › Sedan2
         • Diagrams › Diagram Information and Instructions2
       • Main Relay (Computer/Fuel System) › Component Information6 pages

         • Technical Service Bulletins › EEC IV Power Relay - Shop Manual Revisions/Updates234
         • Locations › Component Locations2
     • Sensors and Switches - Fuel Delivery and Air Induction17 pages

       • Air Flow Meter/Sensor › Component Information › Description and Operation
       • Idle Speed Motor Position Sensor › Component Information › Locations
       • Inertia Fuel Shutoff Switch › Component Information3 pages

         • Locations
         • Diagrams › Diagram Information and Instructions2
       • Throttle Position Sensor › Component Information › Technical Service Bulletins12 pages

         • All Technical Service Bulletins for Throttle Position Sensor:6 pages

           • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
           • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • Customer Interest:2 pages

           • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
           • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
         • All Other Service Bulletins for Throttle Position Sensor:4 pages

           • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
           • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
           • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
     • Throttle Body › Component Information › Description and Operation23
     • Throttle Position Sensor › Component Information › Technical Service Bulletins12 pages

       • All Technical Service Bulletins for Throttle Position Sensor:6 pages

         • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
         • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
         • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
         • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
         • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
       • Customer Interest:2 pages

         • 861613 › Aug › 86 › Engine - Severe Hesitation During Acceleration
         • 851412 › Jul › 85 › TP Sensor - Poor Engine Performance/Mileage
       • All Other Service Bulletins for Throttle Position Sensor:4 pages

         • 89164 › Aug › 89 › Throttle Position Sensor - Application Chart2
         • 86209 › Oct › 86 › Throttle Position Sensor - Part Identification
         • 852011 › Oct › 85 › Throttle Position Sensor - Diagnostic Tips
     • Turbocharger › Wastegate Solenoid › Component Information › Technical Service Bulletins › Engine Compartment Wiring - Connector Service
   • Ignition System217 pages

     • Firing Order › Component Information › Specifications
     • Ignition Timing4 pages

       • Ignition Timing Connector › Component Information › Technical Service Bulletins › Ignition Timing - Spout Connector Locations2
       • Number One Cylinder › Component Information › Locations
       • Timing Marks and Indicators › System Information › Locations
     • Ignition Ballast Resistor › Component Information › Technical Service Bulletins4 pages

       • All Technical Service Bulletins for Ignition Ballast Resistor: › 85139 › Jul › 85 › Ignition Coil - Possible Damage From Antitheft Devices2
       • Customer Interest for Ignition Ballast Resistor: › 85139 › Jul › 85 › Ignition Coil - Possible Damage From Antitheft Devices2
     • Camshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
     • Ignition Coil Wire › Component Information › Technical Service Bulletins › Spark Plug/Coil Wire - Resistance, Manual Correction
     • Crankshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
     • Distributor, Ignition11 pages

       • Distributor Advance Unit › Component Information8 pages

         • Technical Service Bulletins5 pages

           • All Technical Service Bulletins:2 pages

             • 85812 › Apr › 85 › Ignition System - Octane Rod Replacement Deletion
             • 8527 › Jan › 85 › Engine - Knocks When Cold
           • Customer Interest: › 8527 › Jan › 85 › Engine - Knocks When Cold
           • All Other Service Bulletins for Distributor Advance Unit: › 851411 › Jul › 85 › Engine - Poor Performance/Low Fuel Pressure2
           • All Other Service Bulletins for Distributor Advance Unit: › 851411 › Jul › 85 › Engine - Poor Performance/Low Fuel Pressure
         • Description and Operation › Vacuum Spark Advance Mechanism23
       • Distributor Plate W/ Pick-up Sensor › Component Information › Service and Repair
       • Vacuum Spark Delay Valve › Component Information › Testing and Inspection2
     • Hall Effect Sensor, Ignition › Component Information › Technical Service Bulletins › Distributor Stator - Replacement Procedure2345678910111213
     • Ignition Cable › Component Information › Technical Service Bulletins › Spark Plug/Coil Wire - Resistance, Manual Correction
     • Ignition Coil › Component Information › Technical Service Bulletins16 pages

       • All Technical Service Bulletins for Ignition Coil:8 pages

         • 872018 › Oct › 87 › Engine/Ignition - No Start Condition
         • 8628 › Jan › 86 › Ignition Coil - Stumbles/Stalls/Noise In Radio2
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 85139 › Jul › 85 › Ignition Coil - Possible Damage From Antitheft Devices2
       • Customer Interest for Ignition Coil:8 pages

         • 872018 › Oct › 87 › Engine/Ignition - No Start Condition
         • 8628 › Jan › 86 › Ignition Coil - Stumbles/Stalls/Noise In Radio2
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 85139 › Jul › 85 › Ignition Coil - Possible Damage From Antitheft Devices2
     • Ignition Control Module › Component Information › Technical Service Bulletins64 pages

       • All Technical Service Bulletins for Ignition Control Module:32 pages

         • 872110 › Oct › 87 › TFI Module/PIP Sensor - New Diagnostic Procedure23456789101112131415161718192021222324
         • 861125 › Jun › 86 › Engine - Cranks/No Start/Stalls At Idle
         • 86219 › Jan › 86 › Ignition System Resistance - Manual Revision
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • Customer Interest:6 pages

         • 861125 › Jun › 86 › Engine - Cranks/No Start/Stalls At Idle
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • All Other Service Bulletins for Ignition Control Module:26 pages

         • 872110 › Oct › 87 › TFI Module/PIP Sensor - New Diagnostic Procedure23456789101112131415161718192021222324
         • 86219 › Jan › 86 › Ignition System Resistance - Manual Revision
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
     • Ignition Timing Connector › Component Information › Technical Service Bulletins › Ignition Timing - Spout Connector Locations2
     • Knock Sensor › Component Information › Description and Operation
     • Pick-Up Coil, Ignition › Component Information › Specifications › Electrical Specifications2
     • Relays and Modules - Ignition System › Ignition Control Module › Component Information › Technical Service Bulletins64 pages

       • All Technical Service Bulletins for Ignition Control Module:32 pages

         • 872110 › Oct › 87 › TFI Module/PIP Sensor - New Diagnostic Procedure23456789101112131415161718192021222324
         • 861125 › Jun › 86 › Engine - Cranks/No Start/Stalls At Idle
         • 86219 › Jan › 86 › Ignition System Resistance - Manual Revision
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • Customer Interest:6 pages

         • 861125 › Jun › 86 › Engine - Cranks/No Start/Stalls At Idle
         • 86220 › Jan › 86 › Ignition System - Weak/No Spark23
         • 851111 › Jun › 85 › TFI/MAP Connectors - No Start Condition2
       • All Other Service Bulletins for Ignition Control Module:26 pages

         • 872110 › Oct › 87 › TFI Module/PIP Sensor - New Diagnostic Procedure23456789101112131415161718192021222324
         • 86219 › Jan › 86 › Ignition System Resistance - Manual Revision
         • 85173 › Aug › 85 › Engine Compartment Wiring - Connector Service
     • Sensors and Switches - Ignition System22 pages

       • Camshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • Crankshaft Position Sensor › Component Information › Diagrams › Diagram Information and Instructions2
       • Hall Effect Sensor, Ignition › Component Information › Technical Service Bulletins › Distributor Stator - Replacement Procedure2345678910111213
       • Ignition Switch › Component Information › Technical Service Bulletins4 pages

         • All Technical Service Bulletins for Ignition Switch: › 932410 › Nov › 93 › Instrument Cluster Warning Lights - Dimly Lit2
         • Customer Interest for Ignition Switch: › 932410 › Nov › 93 › Instrument Cluster Warning Lights - Dimly Lit2
       • Knock Sensor › Component Information › Description and Operation
     • Spark Plug › Component Information › Technical Service Bulletins6 pages

       • All Technical Service Bulletins for Spark Plug:3 pages

         • 85814 › Apr › 85 › Spark Plugs - Shorting/Altered Scope Pattern
         • 8537 › Feb › 85 › Engine - Road Load Engine Surge Between 45/55 MPH
         • 841616S › Jan › 85 › Engine - Spark Knock/Hesitation/Surging
       • Customer Interest:2 pages

         • 8537 › Feb › 85 › Engine - Road Load Engine Surge Between 45/55 MPH
         • 841616S › Jan › 85 › Engine - Spark Knock/Hesitation/Surging
       • All Other Service Bulletins for Spark Plug: › 85814 › Apr › 85 › Spark Plugs - Shorting/Altered Scope Pattern
     • Vacuum Restrictor › Component Information › Description and Operation
7. 07Transmission and DrivetrainTransmission and Drivetrain: Sections
8. 08Brakes and Traction ControlBrakes and Traction Control: Sections
9. 09Starting and ChargingStarting and Charging: Sections
10. 10Power and Ground DistributionPower and Ground Distribution: Sections
11. 11Steering and SuspensionSteering and Suspension: Sections
12. 12Heating and Air ConditioningHeating and Air Conditioning: Sections
13. 13Restraint SystemsRestraint Systems: Sections
14. 14Accessories and Optional EquipmentAccessories and Optional Equipment: Sections
15. 15Body and FrameBody and Frame: Sections
16. 16Cruise ControlCruise Control: Sections
17. 17Instrument Panel, Gauges and Warning IndicatorsInstrument Panel, Gauges and Warning Indicators: Sections
18. 18Lighting and HornsLighting and Horns: Sections
19. 19Windows and GlassWindows and Glass: Sections
20. 20Wiper and Washer SystemsWiper and Washer Systems: Sections