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.
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.