Wiring Diagram Cluster

1987 Pontiac Firebird Engine Management Wiring Diagram

Find ECU/PCM wiring, fuel injector circuits, ignition coil paths, and oxygen sensor schematics for engine diagnostics.

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Matched Diagrams

48

Variant Used

Firebird V6-173 2.8L

Total Vehicle Diagrams

439

From Diagram To Fix

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Spark Plug ReplacementOil Change1987 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )

Likely fix path

Exact Repair Guides

These repair flows most often intersect with engine management diagnosis on this exact vehicle.

Spark Plug Replacement →
Oil Change

Diagnostic signal

Codes Often Seen With This System

Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.

P0301: Cylinder 1 Misfire Detected →
P0030: HO2S Heater Control Circuit (Bank 1, Sensor 1)P0300: Random/Multiple Cylinder Misfire DetectedP0351: Ignition Coil A Primary/Secondary Circuit

Top Engine Management Diagram Paths

1.Electrical Diagrams > Powertrain Controls > Electronic/Engine Control Module (ECM)Powertrain ManagementOpen2.Electrical Diagrams > Powertrain Management > System Diagram > Powertrain Controls > Electronic/Engine Control Module (ECM)GeneralOpen3.Electrical Diagrams > Powertrain Controls > Engine Data Sensors & Torque Converter ClutchPowertrain ManagementOpen4.Electrical Diagrams > Powertrain Controls > Fuel InjectorsPowertrain ManagementOpen5.Electrical Diagrams > Powertrain Controls > Ignition, Service Engine Soon Indicator & TachometerPowertrain ManagementOpen6.Electrical Diagrams > Powertrain Management > System Diagram > Powertrain Controls > Engine Data Sensors & Torque Converter ClutchGeneralOpen7.Electrical Diagrams > Powertrain Management > System Diagram > Powertrain Controls > Fuel InjectorsGeneralOpen8.Electrical Diagrams > Powertrain Management > System Diagram > Powertrain Controls > Ignition, Service Engine Soon Indicator & TachometerGeneralOpen9.Electrical Diagrams > Powertrain Controls > Cold Start, Emission Control & Mass Air Flow SensorPowertrain ManagementOpen10.Electrical Diagrams > Powertrain Controls > Idle Speed Control, Fuel Control & Vehicle Data SensorsPowertrain ManagementOpen11.Engine > Engine Lubrication — DiagramEngine, Cooling and ExhaustOpen12.Components > Miscellaneous Components > Fuel InjectorsGeneralOpen13.Components > Miscellaneous Components > Ignition CoilGeneralOpen14.Components > Modules > Electronic Control Module (ECM)GeneralOpen15.Components > Relays > Throttle Kicker RelayGeneralOpen16.Components > Sensors > Oxygen SensorGeneralOpen17.Components > Sensors > Throttle Position Sensor (TPS)GeneralOpen18.Connector Views > Engine Control ModuleGeneralOpen19.Electrical Diagrams > Powertrain Management > Computers and Control SystemsGeneralOpen20.Electrical Diagrams > Powertrain Management > Emission Control SystemsGeneralOpen21.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Fuel Pump > Fuel Pump RelayGeneralOpen22.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > Fuel Pump > System DiagramGeneralOpen23.Electrical Diagrams > Powertrain Management > Fuel Delivery and Air Induction > System DiagramGeneralOpen24.Electrical Diagrams > Powertrain Management > Ignition SystemGeneralOpen25.Electrical Diagrams > Powertrain Management > System Diagram > Powertrain Controls > Cold Start, Emission Control & Mass Air Flow SensorGeneralOpen26.Electrical Diagrams > Powertrain Management > System Diagram > Powertrain Controls > Idle Speed Control, Fuel Control & Vehicle Data SensorsGeneralOpen27.Electrical Diagrams > Powertrain Management > System Diagram > Vehicle Speed Sensor (VSS) > Optical Type W/Indicator ClusterGeneralOpen28.Electrical Diagrams > Powertrain Management > System Diagram > Vehicle Speed Sensor (VSS) > W/Gages & Digital ClusterGeneralOpen29.Electrical Diagrams > Starting and Charging > Power and Ground Distribution > Fuse > ECM-Ign FuseGeneralOpen30.Fluid Diagrams > Engine LubricationGeneralOpen31.Computers and Control Systems — Diagram Information and InstructionsPowertrain ManagementOpen32.Computers and Control Systems — Electrical DiagramsPowertrain ManagementOpen33.Cooling System — Diagram Information and InstructionsEngine, Cooling and ExhaustOpen34.Cooling System — Electrical DiagramsEngine, Cooling and ExhaustOpen35.Diagram Information and InstructionsPowertrain ManagementOpen36.Electrical Diagrams > Vehicle Speed Sensor (VSS) > Optical Type W/Indicator ClusterPowertrain ManagementOpen37.Electrical Diagrams > Vehicle Speed Sensor (VSS) > W/Gages & Digital ClusterPowertrain ManagementOpen38.Emission Control Systems — Diagram Information and InstructionsPowertrain ManagementOpen39.Emission Control Systems — Electrical DiagramsPowertrain ManagementOpen40.Emission Control Systems — Vacuum and Vapor Hose Diagrams > Figure 11 V6-173 (2.8L) PFI, (Vin 9)Powertrain ManagementOpen41.Emission Control Systems — Vacuum and Vapor Hose Diagrams > Firebird W/V6-173 (2.8L) PFI, With A/T (Vin S) (Vin W)Powertrain ManagementOpen42.Emission Control Systems — Vacuum and Vapor Hose Diagrams > Firebird W/V6-173 (2.8L) PFI, With M/T (Vin S) (Vin W)Powertrain ManagementOpen43.Fuel Delivery and Air Induction — Diagram Information and InstructionsPowertrain ManagementOpen44.Fuel Delivery and Air Induction — Electrical DiagramsPowertrain ManagementOpen45.Fuel Delivery and Air Induction > Fuel Pump — Diagram Information and InstructionsPowertrain ManagementOpen46.Fuel Delivery and Air Induction > Fuel Pump — Electrical DiagramsPowertrain ManagementOpen47.Ignition System — Diagram Information and InstructionsPowertrain ManagementOpen48.Ignition System — Electrical DiagramsPowertrain ManagementOpen

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1987 Pontiac Firebird Repair HubExact Vehicle

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OEM Manual Evidence

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1987 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Pontiac Firebird V8-305 5.0L VIN H 4-bbl Service Manual | Operation CHARM Operation CHARM : C...

1987 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Pontiac Firebird V8-350 5.7L Service Manual | Operation CHARM Operation CHARM : Car repair ma...

1987 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Pontiac Firebird V8-305 5.0L VIN F FI Service Manual | Operation CHARM Operation CHARM : Car...

1987 Pontiac Firebird A L L Diagnostic Trouble Codes ( DTC )OEM Manual

A L L Diagnostic Trouble Codes ( DTC ) — 1987 Pontiac Firebird V6-173 2.8L Service Manual | Operation CHARM Operation CHARM : Car repair ma...

Repairs That Intersect This Wiring

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1987 Pontiac Firebird Spark Plug ReplacementRepair

Open the matching repair workflow that usually intersects with engine management diagnosis on this vehicle.

1987 Pontiac Firebird Oil ChangeRepair

Open the matching repair workflow that usually intersects with engine management diagnosis on this vehicle.

Likely Trouble Codes for This System

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P0301: Cylinder 1 Misfire DetectedCode

Ignition code commonly seen during engine management diagnosis.

P0030: HO2S Heater Control Circuit (Bank 1, Sensor 1)Code

Emissions code commonly seen during engine management diagnosis.

P0300: Random/Multiple Cylinder Misfire DetectedCode

Ignition code commonly seen during engine management diagnosis.

P0351: Ignition Coil A Primary/Secondary CircuitCode

Ignition code commonly seen during engine management diagnosis.

P0352: Ignition Coil B Primary/Secondary CircuitCode

Ignition code commonly seen during engine management diagnosis.

P0353: Ignition Coil C Primary/Secondary CircuitCode

Ignition code commonly seen during engine management diagnosis.

More Firebird Wiring Pages

Starter Wiring DiagramAlternator Wiring DiagramHeadlight Wiring DiagramA/C & Heater Wiring DiagramPower Window Wiring DiagramInstrument Cluster Wiring DiagramWiper & Washer Wiring DiagramTransmission Wiring DiagramCruise Control Wiring DiagramBody Electrical Wiring Diagram

Same System, Other Vehicles

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