Engine Controls - Basic Engine Testing - 3.0L: Summary

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, proceed to appropriate article:

• For OHV gasoline vehicles, see TESTS W/CODES - OHV GASOLINE.
• For OHV Flex-Fuel vehicles, see TESTS W/CODES - OHV FLEX-FUEL.
• For DOHC vehicles, see TESTS W/CODES - DOHC.

If no fault codes are found in self-diagnostics, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedures.