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.
Basic Trouble Shooting
Limited testing information is available from the manufacturer. Before replacing the computer, ensure secondary ignition and good quality fuel is present. Also make sure the engine is in good order, no vacuum leaks are present and emission systems are functioning correctly.
Use the appropriate wiring diagram to check computer has source of 12 volts and proper ground connections. Also check all related harnesses and connections for any shorts or open circuits. Repair or replace any problems and retest the vehicle to see if it runs okay now. If not, and all systems and devices work okay, replace the computer.
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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