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 MANUALSPLYMOUTH1994GRAND VOYAGER BASE, 31THREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC TESTING - 2.5LFUEL SYSTEMFUEL PUMP RELAY
1994 Plymouth Grand Voyager Base, 31TH
Fuel Pump Relay
1994 Plymouth Grand Voyager Base, 31THSECTION Fuel Pump Relay
NOTE:
If fuel pump relay is suspected of causing a fuel or ignition system malfunction, use Diagnostic Readout Box (DRB) to diagnose pump relay. See TESTS W/CODES - 2.5L TBI
article in the ENGINE PERFORMANCE section.
Fuel pump relay is controlled by PCM through the same ground circuit as ASD relay or through ASD relay. When PCM turns ASD relay ground circuit off, fuel pump relay ground circuit is also turned off. See AUTO SHUTDOWN (ASD) RELAY.
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.