Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSPONTIAC1987FIREBIRD FORMULA, 5.0 H, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCEADJUSTMENTTUNE-UP - 2.8L/173" GAS MPI V6 VIN [S]ENGINE IDENTIFICATION

1987 Pontiac Firebird Formula, 5.0 H, Automatic

Engine Identification

1987 Pontiac Firebird Formula, 5.0 H, AutomaticSECTION Engine Identification

Engines may be identified by the 8th character of Vehicle Identification Number (VIN). The VIN is located at the left front corner of instrument panel and is visible through windshield.

ENGINE IDENTIFICATION (BY VIN)

Application	VIN Code
2.8L (173") MFI RWD Longitudinal	S

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.