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.
Fuel Pump Relay
When ignition switch is turned to the RUN position, PCM will turn on the electric fuel pump by energizing the fuel pump relay, located in the underhood fuse/relay block. PCM will keep relay energized if engine is running or cranking (PCM is receiving reference pulses from the ICM). If no reference pulses exist, PCM turns pump off within 2 seconds after key on.
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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.