- Faulty Distributor/Cap/Rotor:
- Inspect for cracks or damage in distributor cap
- Check rotor condition for wear or corrosion
- Faulty Ignition Control Module (ICM):
- Check for proper voltage supply to the ICM and ensure it's grounding correctly
- Coolant Temperature Sensor (CTS):
- Test sensor resistance with multimeter and replace if out of spec
- Crankshaft Position Sensor:
- Check sensor for debris or damage, ensuring proper alignment with the flywheel
- EGR System Issues:
- Clean or replace EGR valve and passages to improve air-fuel mixture
- Idle Air Control Valve (IACV)
- Ensure IACV is functioning correctly and clear any obstructions
- Fuel Pressure Regulator:
- Test fuel pressure to identify if it's maintaining proper pressure
- Fuel Filter Clogging:
- Replace the fuel filter if restricted, ensuring adequate fuel flow to the engine
Always begin your diagnosis by checking for any relevant trouble codes stored in your car's computer system, as they can provide valuable clues about the issue at hand.
Remember:
- If the problem persists or if you encounter any difficulties during the diagnosis/repair process, seeking assistance from a qualified mechanic is recommended.
