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 Control
Used on all models, ECM controls air/fuel delivery to combustion chamber by controlling injector fuel flow. ECM controls idle speed and fuel pump (in tank). With ignition turned to "ON" position, fuel pump will run for 2 seconds. On some models, fuel pump may run for 20 seconds. Fuel pump will run 2-20 seconds and then stop unless engine is cranking or running. ECM controls and maintains idle speed when air conditioning clutch is engaged.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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