Diagnostic Notes

This section is used to find the correct test procedure for a given symptom. Symptoms and actions in this section are Emission related only. Refer to appropriate section for complete Diagnosis By Symptom for Fuel, Ignition, Computerized Engine Controls and Emissions. Verify correct system application to ensure that vehicle has the given component(s).

Before proceding to the appropriate symptom perform the following inspection:

NOTE: Catalytic converter and feedback systems do not operate until they are at normal operating temperature. It is essential that vehicle has been properly warmed up and is at operating temperature (except when attempting to diagnosis a cold driveability problem). Failure to do so will result in inaccurate test results.

VISUALLY CHECK:

1 Vacuum hoses for splits, kinks and proper routing.
2 Ignition wires for cracking, hardness and proper connections at both the distributor and spark plugs.
3 All wiring for proper connections, pinches, routing, and cuts.