Engine Controls - Tests W/Codes - 4-CYL: Introduction

NOTE: Shadow and Sundance Convertible models equipped with 2.5L TBI engine are manufactured with either early or late design fuel, ignition and emission systems. Late design vehicles use an epoxy ignition coil, mounted on thermostat housing, and a high pressure fuel system requiring quick-connect fuel fittings. Early design vehicles use an oil-filled ignition coil, mounted on right inner fender, and a low pressure fuel system using hoses and clamps.

If no faults were found while performing BASIC DIAGNOSTIC PROCEDURES in BASIC TESTING , proceed with self-diagnostics. If no fault codes or only pass codes are present after entering self-diagnostics, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e. ROUGH IDLE, NO START, etc.) in the ENGINE PERFORMANCE section.