Fiero L4-151 2.5L (1985): Engine, Cooling and Exhaust
Also for this vehicle: Fiero V6-173 2.8L (1986).
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.
Engine199 pages
- Compression Check › System Information › Specifications
Camshaft, Lifters and Push Rods34 pages
Camshaft Gear/Sprocket › Component Information › Technical Service Bulletins24 pages
- Customer Interest: › 86664 › Oct › 86 › Engine - Timing Gear Noise (Knock)
All Technical Service Bulletins for Camshaft Gear/Sprocket:12 pages
All Other Service Bulletins for Camshaft Gear/Sprocket:11 pages
Camshaft, Engine › Component Information6 pages
Technical Service Bulletins4 pages
All Technical Service Bulletins for Camshaft:2 pages
- Customer Interest: › 86664 › Oct › 86 › Engine - Timing Gear Noise (Knock)
- All Other Service Bulletins for Camshaft: › 88618A › Feb › 88 › Engine - Camshaft Lobe Lift
- Specifications › Camshaft and Bearing Specifications2
- Lifter / Lash Adjuster, Valve › Component Information › Specifications › Specification Table2
- Push Rod › Component Information › Technical Service Bulletins › Push Rod Covers - New Removal Method
- Rocker Arm Assembly › Component Information › Technical Service Bulletins › Engine - Broken Rocker Arm Stud
Cylinder Block Assembly30 pages
- Balance Shaft › Component Information › Diagrams234
- Connecting Rod Bearing › Component Information › Specifications
- Connecting Rod, Engine › Component Information › Specifications2
Crankshaft Gear/Sprocket › Component Information › Technical Service Bulletins6 pages
All Technical Service Bulletins for Crankshaft Gear/Sprocket:3 pages
- Customer Interest: › 86664 › Oct › 86 › Engine - Timing Gear Noise (Knock)
- All Other Service Bulletins for Crankshaft Gear/Sprocket: › 90621 › Feb › 90 › Engine - Install Gear Kit When Servicing Timing Gears2
- Crankshaft Main Bearing › Component Information › Specifications › Bearing Undersize Availability
Crankshaft, Engine › Component Information6 pages
Technical Service Bulletins4 pages
All Technical Service Bulletins for Crankshaft:2 pages
- Customer Interest: › 86664 › Oct › 86 › Engine - Timing Gear Noise (Knock)
- All Other Service Bulletins for Crankshaft: › 87629 › Apr › 87 › Engine Crankshaft - Service Replacements
- Specifications › Torque Specifications2
- Harmonic Balancer - Crankshaft Pulley › Component Information › Specifications › Mechanical2
- Piston, Engine › Component Information › Specifications23
- Piston Pin, Engine › Component Information › Specifications2
- Piston Ring, Engine › Component Information › Specifications › Piston Ring Dimensions23
Cylinder Head Assembly22 pages
- Valve Clearance › System Information › Specifications2
- Fuel Pressure Release › System Information › Service and Repair
Cylinder Head Bolts › Component Information › Technical Service Bulletins10 pages
- Rocker Arm Assembly › Component Information › Technical Service Bulletins › Engine - Broken Rocker Arm Stud
- Valve Cover › Valve Cover Gasket › Component Information › Technical Service Bulletins › Rocker Arm Cover - Gasket & RTV Sealant Usage
- Valve Guide › Component Information › Specifications2
- Valve Seat › Component Information › Specifications
- Valve Spring › Component Information › Specifications
- Valve, Intake/Exhaust › Component Information › Specifications › Valve Specifications23
Drive Belts, Mounts, Brackets and Accessories9 pages
Drive Belt › Component Information8 pages
- Engine Mount › Component Information › Technical Service Bulletins › Engine Controls - Updated Rough/Unstable Idle Chart
Engine Lubrication17 pages
- Engine Oil Pressure › Component Information › Specifications
- Engine Oil Drain Plug › Component Information › Technical Service Bulletins › Oil Drain Plug Gasket - Revised Copper Gasket
- Engine Oil › Component Information › Technical Service Bulletins › Engine - GM dexos 1 and dexos 2(R) Oil Specifications2345
- Oil Filter, Engine › Component Information › Technical Service Bulletins › Engine - Noise/Damage Oil Filter Application Importance2
- Oil Pan, Engine › Component Information › Specifications23
- Oil Pressure Sender › Component Information › Specifications
- Oil Pressure Switch (For Fuel Pump) › Component Information › Locations
- Oil Pressure Warning Lamp/Indicator › Component Information › Testing and Inspection
- Oil Pump Cover › Component Information › Specifications
- Oil Pump, Engine › Engine Oil Pressure › Component Information › Specifications
- Intake Manifold › Component Information › Technical Service Bulletins › Engine - Intake Manifold Inspection/Replacement
- Lamps and Indicators - Engine › Oil Pressure Warning Lamp/Indicator › Component Information › Testing and Inspection
Sensors and Switches - Engine2 pages
Timing Components36 pages
- Balance Shaft › Component Information › Diagrams234
Camshaft Gear/Sprocket › Component Information › Technical Service Bulletins24 pages
All Technical Service Bulletins for Camshaft Gear/Sprocket:12 pages
- Customer Interest: › 86664 › Oct › 86 › Engine - Timing Gear Noise (Knock)
All Other Service Bulletins for Camshaft Gear/Sprocket:11 pages
Crankshaft Gear/Sprocket › Component Information › Technical Service Bulletins6 pages
All Technical Service Bulletins for Crankshaft Gear/Sprocket:3 pages
- Customer Interest: › 86664 › Oct › 86 › Engine - Timing Gear Noise (Knock)
- All Other Service Bulletins for Crankshaft Gear/Sprocket: › 90621 › Feb › 90 › Engine - Install Gear Kit When Servicing Timing Gears2
- Timing Cover › Component Information › Specifications2
Tune-up and Engine Performance Checks42 pages
Fuel Pressure › System Information3 pages
Idle Speed › System Information4 pages
Air Cleaner Housing › Air Filter Element › Component Information › Technical Service Bulletins5 pages
- All Technical Service Bulletins: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
- Customer Interest: › 04-07-30-013B › Feb › 07 › Engine, A/T - Shift/Driveability Concerns/MIL ON2
- All Other Service Bulletins for Air Filter Element: › 8658 › Apr › 86 › Vehicle - Rattle From the Rear
- All Other Service Bulletins for Air Filter Element: › 8658 › Apr › 86 › Vehicle - Rattle From the Rear
- 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 Bulletins4 pages
All Technical Service Bulletins for Spark Plug Wire:2 pages
Customer Interest for Spark Plug Wire:2 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 Information5 pages
- Compression Check › System Information › Specifications
- Valve Clearance › System Information › Specifications2
- Water Pump › Component Information › Specifications2
Cooling System46 pages
- Coolant › Component Information › Technical Service Bulletins › Cooling System - Coolant Recycling Information2345678
- Coolant Level Indicator Lamp › Component Information › Description and Operation2
Radiator Cooling Fan8 pages
- Radiator Cooling Fan Motor › Component Information › Diagrams › Diagram Information and Instructions234
- Radiator Cooling Fan Motor Relay › Component Information › Technical Service Bulletins › Cooling System - Repeated Fan Relay Failures
- Radiator Cooling Fan Temperature Sensor / Switch › Component Information › Locations › Coolant Temperature Sensor23
- Heater Core › Component Information › Technical Service Bulletins › Cooling System, A/C - Aluminum Heater Cores/Radiators23
- Radiator › Component Information › Technical Service Bulletins › Cooling System, A/C - Aluminum Heater Cores/Radiators234
- Radiator Cap › Component Information › Specifications
- Relays and Modules - Cooling System › Radiator Cooling Fan Motor Relay › Component Information › Technical Service Bulletins › Cooling System - Repeated Fan Relay Failures
Sensors and Switches - Cooling System › Engine - Coolant Temperature Sensor/Switch5 pages
- Temperature Gauge › Component Information › Testing and Inspection
- Temperature Warning Lamp/Indicator, Engine Cooling › Component Information › Description and Operation
- Thermostat, Engine Cooling › Component Information › Specifications
- Water Pump › Component Information › Specifications2
Exhaust System8 pages
Catalytic Converter › Component Information5 pages
- Exhaust Manifold › Component Information › Specifications
Exhaust Pipe › Component Information › Technical Service Bulletins2 pages