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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSPONTIAC1991FIREBIRD FORMULA, 5.0 F, STANDARD, M39REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 6 (ENGINE CONTROLS - BASIC TESTING)BASIC FUEL SYSTEM CHECKS (A-7)FUEL SYSTEM PRESSURE TEST (EXCEPT SATURN)FUEL PUMP RELAY BY-PASS PROCEDURE
1991 Pontiac Firebird Formula, 5.0 F, Standard, M39
Fuel Pump Relay By-Pass Procedure
1991 Pontiac Firebird Formula, 5.0 F, Standard, M39SECTION Fuel Pump Relay By-Pass Procedure
WARNING: This page does not describe the selected car, but rather 39 other vehicles, including the 1992 Saturn SL2, 1992 Saturn SL1, 1992 Saturn SL, 1992 Saturn SC, and 1992 Pontiac Sunbird. However, it is still accessible from the selected car via links, so may be relevant.
See FUEL DELIVERY in appropriate I - SYS/COMP TESTS article in this section.
RENDER: 1.0x
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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.