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 MANUALSMERCURY1991TRACER BASE, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 100 (ENGINE CONTROLS - REMOVE/INSTALL/OVERHAUL - 4.6L)FUEL SYSTEMFUEL PUMPINSTALLATION
1991 Mercury Tracer Base, 4D Sedan, Automatic
Fuel Pump: Installation
1991 Mercury Tracer Base, 4D Sedan, AutomaticSECTION Installation
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 1995 Mercury Grand Marquis, 1995 Mercury Cougar, 1995 Lincoln Town Car, 1995 Lincoln Mark VIII, and 1995 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
- Clean fuel pump mounting flange, fuel tank mounting surface and seal ring groove. To hold new seal ring in place during installation, apply a light coating of Long Life Lubricant (ESA-M1C75-B) on new seal ring.
- Install seal ring in fuel ring groove. Install fuel pump/sender assembly. DO NOT damage nylon filter. Ensure locating keys are in keyways and seal ring remains in place.
- Using Fuel Tank Sender Wrench (D84P-9257-A), tighten locking ring by rotating ring clockwise until ring stops against stops. To complete installation, reverse removal procedure. Fill fuel tank.
- Pressurize fuel system and check for leaks. To pressurize fuel system, turn ignition on for 3 seconds, then turn ignition off. Repeat ignition cycle 5 to 10 times.
- Clean fuel pump mounting flange, fuel tank mounting surface and seal ring groove. To hold new seal ring in place during installation, apply a light coating of Long Life Lubricant (C1AZ-19590-BA) on seal ring.
- Install seal ring in fuel ring groove. Install fuel pump and sender assembly. DO NOT damage nylon filter. Ensure locating keys are in keyways and seal ring remains in place.
- Using Fuel Tank Sender Wrench (D84P-9257-A), tighten locking ring by rotating ring clockwise until ring stops against stops. To complete installation, reverse removal procedure.
- Pressurize fuel system and check for leaks. To pressurize fuel system, turn ignition on for 3 seconds, then turn ignition off. Repeat ignition cycle 5 to 10 times.
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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.