Inspection Procedure

Visually and/or physically inspect following conditions;

Vacuum hoses for splits, kinks and improper connections.
Throttle body gasket.
Gasket between Intake manifold and cylinder head.
Seals between Intake manifold and fuel injectors.
Exhaust system between O2 sensor and the three way catalyst for air leakage.
Air cleaner filter element for excessive dirt or for any foreign objects.
Throttle body inlet for damage or for any foreign objects.
Throttle bore and throttle plate for chocking and for any foreign objects.
Restricted exhaust system.
Good
- Carefully re-do this troubleshooting guide steps.
- If the diagnostics have been performed correctly with no failure found and no problems were found with the circuits or connectors, replace the ECM and then go to "VERIFICATION OF REPAIR " procedure.
No Good
- Repair as necessary and go to "VERIFICATION OF REPAIR " procedure.