Possible Causes & Corrections
WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.
Check for the following:
- Check PCM grounds. Ensure they are clean, tight and properly located.
- Check for poor quality or alcohol contaminated fuel.
- Check canister purge system (staying on).
- Check for fuel in pressure regulator vacuum hose. If fuel is present, replace regulator.
- Check fuel system for incorrect fuel pressure. See BASIC FUEL SYSTEM CHECKS in appropriate BASIC DIAGNOSTIC PROCEDURES article.
- Check fuel injectors. Perform injector balance test. See FUEL INJECTOR BALANCE TEST under FUEL SYSTEMS in appropriate SYSTEM & COMPONENT TESTING article.
- Check injector harness locations. Ensure injectors are connected to correct injector/cylinder according to firing order.