Section 64 (Engine Controls - Basic Testing - 3.3L CNG): Summary
WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, and 1995 Dodge Caravan. However, it is still accessible from the selected car via links, so may be relevant.
If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES, go to TESTS W/CODES - 3.3L CNG article in the ENGINE PERFORMANCE section. If no Diagnostic Trouble Codes (DTCs) are found in self-diagnostics, go to TESTS W/O CODES - CNG article in the ENGINE PERFORMANCE section for diagnosis by symptom (i.e., ROUGH IDLE, NO-START, etc.) or intermittent diagnostic procedures.