Firenza V6-173 2.8L (1986): Powertrain Management
Also for this vehicle: Firenza L4-112 1.8L (1986), Firenza L4-112 1.8L VIN 0 TBI (1982), Firenza L4-121 2.0L (1983), Firenza L4-121 2.0L VIN K TBI (1987).
Diagnostics
Maintenance
Engine
Transmission
Brakes
Electrical
Steering & suspension
Heating & A/C
Body & interior
Choose Sections to see everything in a chapter, or a chapter title to start at its first page.
Relays and Modules - Powertrain Management19 pages
Relays and Modules - Computers and Control Systems17 pages
- Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
Engine Control Module › Component Information15 pages
Technical Service Bulletins10 pages
- Customer Interest: › 91T1836E3 › Aug › 91 › ECM/PCM - Damaged or Mis-Diagnosed
All Technical Service Bulletins for Engine Control Module:5 pages
All Other Service Bulletins for Engine Control Module:4 pages
- Description and Operation › Modes of Operation2
- Testing and Inspection › Component Tests and General Diagnostics23
- Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications
- Relays and Modules - Fuel Delivery and Air Induction › Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications
- Relays and Modules - Ignition System › Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
Sensors and Switches - Powertrain Management35 pages
Sensors and Switches - Computers and Control Systems30 pages
- Air Flow Meter/Sensor › Component Information › Technical Service Bulletins › Engine Controls - MAF Sensor Warranty Return Program
- Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications
- Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications
- Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Specifications23
- Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins › MAP - Revised Output Chart for Codes 33, 34, 63, and 64234567891011
- Oxygen Sensor › Component Information › Technical Service Bulletins › Oxygen Sensors - Silica Contamination
- Power Steering Pressure Switch › Component Information › Locations234
- Throttle Position Sensor › Component Information › Specifications234
- Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation23
- Vehicle Speed Sensor › Component Information › Description and Operation
Sensors and Switches - Fuel Delivery and Air Induction5 pages
Tune-up and Engine Performance Checks43 pages
Fuel Pressure › System Information8 pages
Idle Speed › System Information5 pages
Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins7 pages
- Customer Interest: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
- All Technical Service Bulletins: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
- All Other Service Bulletins for Air Filter Element: › 87T57B7A › Jul › 88 › Engine - Stalls on Drive/Reverse Engagement23
- All Other Service Bulletins for Air Filter Element: › 87T57B7A › Jul › 88 › Engine - Stalls on Drive/Reverse Engagement
- Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
- Firing Order › Component Information › Specifications › Ignition Firing Order
Spark Plug Wire <--> [Ignition Cable] › Component Information › Technical Service Bulletins2 pages
Distributor, Ignition14 pages
- Distributor Retard Control › Component Information › Description and Operation › Distributor Spark Vacuum Retard Delay Valve (DS-VRDV)2
Distributor Vacuum Control › Component Information8 pages
- Vacuum Spark Delay Valve › Component Information › Description and Operation › Delay Valve Trapped Spark (DV-TS)234
- Spark Plug › Component Information › Specifications
- Compression Check › System Information › Specifications
- Valve Clearance › System Information › Specifications › Valve Arrangement
Computers and Control Systems111 pages
- Air Flow Meter/Sensor › Component Information › Technical Service Bulletins › Engine Controls - MAF Sensor Warranty Return Program
- Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Specifications23
- Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications
- Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications
- Reference Signal <--> [Cranking Signal] › Component Information › Description and Operation
- Assembly Line Diagnostic Link (ALDL) Connector <--> [Data Link Connector] › Component Information › Description and Operation
- Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
Engine Control Module › Component Information15 pages
Technical Service Bulletins10 pages
- Customer Interest: › 91T1836E3 › Aug › 91 › ECM/PCM - Damaged or Mis-Diagnosed
All Technical Service Bulletins for Engine Control Module:5 pages
All Other Service Bulletins for Engine Control Module:4 pages
- Description and Operation › Modes of Operation2
- Testing and Inspection › Component Tests and General Diagnostics23
- Idle Speed/Throttle Actuator - Electronic › Component Information › Locations23456
- Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications
- Malfunction Indicator Lamp › Component Information › Diagrams › Diagram Information and Instructions2
- Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins › MAP - Revised Output Chart for Codes 33, 34, 63, and 64234567891011
- Memory Calibration Unit › Component Information › Technical Service Bulletins › PROM/MEMCAL - Identification Marks2
Mixture Control Solenoid › Component Information4 pages
- Oxygen Sensor › Component Information › Technical Service Bulletins › Oxygen Sensors - Silica Contamination
- Power Steering Pressure Switch › Component Information › Locations234
Relays and Modules - Computers and Control Systems17 pages
- Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
Engine Control Module › Component Information15 pages
Technical Service Bulletins10 pages
- Customer Interest: › 91T1836E3 › Aug › 91 › ECM/PCM - Damaged or Mis-Diagnosed
All Technical Service Bulletins for Engine Control Module:5 pages
All Other Service Bulletins for Engine Control Module:4 pages
- Description and Operation › Modes of Operation2
- Testing and Inspection › Component Tests and General Diagnostics23
- Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications
Sensors and Switches - Computers and Control Systems30 pages
- Air Flow Meter/Sensor › Component Information › Technical Service Bulletins › Engine Controls - MAF Sensor Warranty Return Program
- Absolute Pressure Sensor <--> [Barometric Pressure Sensor] › Component Information › Specifications
- Coolant Temperature Sensor/Switch (For Computer) › Component Information › Specifications
- Manifold Air Temperature (MAT) Sensor <--> [Intake Air Temperature Sensor] › Component Information › Specifications23
- Manifold Pressure/Vacuum Sensor › Component Information › Technical Service Bulletins › MAP - Revised Output Chart for Codes 33, 34, 63, and 64234567891011
- Oxygen Sensor › Component Information › Technical Service Bulletins › Oxygen Sensors - Silica Contamination
- Power Steering Pressure Switch › Component Information › Locations234
- Throttle Position Sensor › Component Information › Specifications234
- Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation23
- Vehicle Speed Sensor › Component Information › Description and Operation
- Tach Filter › Component Information › Locations
- Throttle Position Sensor › Component Information › Specifications234
- Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation23
- Vehicle Speed Sensor › Component Information › Description and Operation
Emission Control Systems75 pages
Managed Air Injection Reactor (MAIR) <--> [Air Injection]21 pages
- Electric Divert/Electric Air Switching (ED/ES) <--> [Air Diverter Valve] › Component Information › Description and Operation › Diverter Valve2345678
- Air Injection Check Valve › Component Information › Testing and Inspection
- Air Injection Control Valve › Component Information › Description and Operation › Electric Air Control & Electric Air Switching (EAC/ES)234
- Air Injection Filter › Component Information › Service and Repair
- Air Injection Pump › Component Information › Testing and Inspection23
- Pulsair Valve, Secondary Air Injection › Component Information › Description and Operation › Pulse Air Injection Reaction (Pair, Pulsair)2
- Differential Vacuum Delay & Separator Valve <--> [Vacuum Delay Valve, Air Injection] › Component Information › Description and Operation2
Catalytic Converter › Component Information8 pages
Evaporative Emissions System17 pages
- Bowl Vent Valve › Component Information › Testing and Inspection
Canister Purge Control Valve › Component Information4 pages
- Canister Purge Solenoid › Component Information › Locations2
- Evaporative Emission Control Canister › Component Information › Description and Operation2345
Thermal Vacuum Valve - EVAP › Component Information5 pages
Exhaust Gas Recirculation15 pages
- EGR Vacuum Solenoid Valve <--> [EGR Control Solenoid] › Component Information › Locations2
- EGR Valve › Component Information › Service and Repair2
Thermal Vacuum Valve, EGR › Component Information10 pages
- Vacuum Delay Valve, EGR › Component Information › Description and Operation
- Positive Crankcase Ventilation › Component Information › Description and Operation2345
- Thermostatic Air Cleaner › Thermostatic Air Cleaner Vacuum Switch › Component Information › Description and Operation › Thermac Secondary Vacuum Break Thermal Vacuum Switch (SVB-TVS)23
Fuel Delivery and Air Induction77 pages
Fuel Pressure › System Information8 pages
- Fuel Pressure Release › System Information › Service and Repair
Idle Speed › System Information5 pages
Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins4 pages
- Air Flow Meter/Sensor › Component Information › Technical Service Bulletins › Engine Controls - MAF Sensor Warranty Return Program
- Cold Start Injector › Component Information › Locations › Cold Start Fuel Injector2
- Fuel › Component Information › Technical Service Bulletins › Fuel System - TOP TIER Detergent Gasoline (Canada)23456
- Fuel Filler Cap › Component Information › Description and Operation
- Fuel Filter › Fuel Pressure Release › System Information › Service and Repair
- Fuel Pressure Regulator › Component Information › Description and Operation2
Fuel Pump › Fuel Pressure › System Information8 pages
- Fuel Rail › Component Information › Description and Operation2
- Idle Speed/Throttle Actuator - Electronic › Component Information › Locations23456
- Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications
- Relays and Modules - Fuel Delivery and Air Induction › Idle Speed Control Motor <--> [Idle/Throttle Speed Control Unit] › Component Information › Specifications
Sensors and Switches - Fuel Delivery and Air Induction5 pages
- Throttle Body › Component Information › Description and Operation
- Throttle Position Sensor › Component Information › Specifications234
Ignition System33 pages
- Firing Order › Component Information › Specifications › Ignition Firing Order
Distributor, Ignition14 pages
- Distributor Retard Control › Component Information › Description and Operation › Distributor Spark Vacuum Retard Delay Valve (DS-VRDV)2
Distributor Vacuum Control › Component Information8 pages
- Vacuum Spark Delay Valve › Component Information › Description and Operation › Delay Valve Trapped Spark (DV-TS)234
- Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
Spark Plug Wire <--> [Ignition Cable] › Component Information › Technical Service Bulletins2 pages
- Ignition Coil › Component Information › Specifications › C3I Ignition System2
- Pick-Up Coil, Ignition › Component Information › Specifications2
- Relays and Modules - Ignition System › Electronic Spark Timing <--> [Electronic Spark Control Module] › Component Information › Testing and Inspection
- Spark Plug › Component Information › Specifications
- Tach Filter › Component Information › Locations
- Distributor Thermal Vacuum Switch <--> [Thermal Vacuum Valve, Vacuum/Dist. Advance] › Component Information › Description and Operation › Choke Vacuum Break Distributor Thermal Vacuum Switch2345
- Vacuum Advance Control Solenoid › Component Information › Description and Operation
Transmission Control Systems9 pages
Actuators and Solenoids - Transmission and Drivetrain › Actuators and Solenoids - A/T › Torque Converter Clutch Solenoid, A/T › Component Information › Technical Service Bulletins6 pages
- Sensors and Switches - Transmission and Drivetrain › Sensors and Switches - A/T › Transmission Position Switch/Sensor, A/T › Component Information › Description and Operation23
PROM - Programmable Read Only Memory › Component Information43 pages
Technical Service Bulletins2 pages
- Description and Operation › CALPAK2345
- Service and Repair › CALPAK2345