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.
Chart A-5, Cranks But Won't Run (Fuel Pump Problem)
With ignition on, ECM activates fuel pump relay and operates fuel pump. Fuel pump operates when engine is running or cranking, and ECM is receiving ignition reference pulses. If no ignition reference pulses are received, ECM will turn off fuel pump within 2-3 seconds after ignition is switched on. ECM is located under left side of instrument panel, near kick panel. Fuel pump relay resistance should be 56-84 ohms.
- This verifies fuel pump operation.
- This checks fuel pump wiring circuit. Fuel pump relay is mounted on ECM located under left side of instrument panel, near kick panel.
- This ensures ECM is sending a signal to fuel pump relay for 2-3 seconds.
- Checks fuel pump relay signal from ECM.
Use the Manual With the Right Hardware
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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.