Engine Misfires Or Hesitates
- Ensure vacuum hoses are not disconnected or damaged.
- Ensure electrical harness, connectors and wires are not broken or loose.
- Ensure fuel pressure is correct.
- Check air conditioner switch operation.
- Check air conditioner power relay operation.
- Check airflow sensor voltage output.
- Check barometric pressure sensor voltage output.
- Check crank angle sensor operation.
- Check coolant temperature sensor operation.
- Check idle position switch operation.
- Check ignition switch operation.
- Check inhibitor switch operation (auto. trans.).
- Check intake air temperature sensor operation.
- Check ISC servo drive signal and operation.
- Check motor position sensor operation.
- Check oxygen (O2) sensor voltage output.
- Check power steering oil pressure switch operation.
- Check throttle position sensor operation.
- Check TDC sensor or No. 1 cylinder TDC sensor operation.