Fuel Injected Models (Cold)
- Ensure air intake system is unrestricted.
- Remove By-Pass Air Control (BAC) valve hose and check valve for restrictions. If no restrictions are found, check resistance at BAC valve terminals.
- Check EGR valve and solenoid for correct operation.
- Check intake air and water thermosensor.
- Check airflow meter or ISC valve malfunction.
- Check A/C cut-off system (if equipped).
- Ensure fuel system pressure is correct.
- Check for cracks or poor connections at airflow meter or throttle body.
- Verify correct throttle position sensor adjustment and resistance value.