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 MANUALSJEEP1987COMANCHE LAREDO, 4.0 M, 4WD, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEM2.5L TBI SYSTEMOPERATIONECU-CONTROLLED RELAYSFUEL PUMP CONTROL RELAY
1987 Jeep Comanche Laredo, 4.0 M, 4WD, Automatic
Fuel Pump Control Relay
1987 Jeep Comanche Laredo, 4.0 M, 4WD, AutomaticSECTION Fuel Pump Control Relay
Battery voltage is applied to the relay through the ignition switch. The relay is energized when a ground is provided by the ECU. When energized, voltage is applied to the fuel pump See Figure .
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.