Symptom Definition

Engine continues to run (but very rough) after ignition is turned off. If engine runs smoothly, check ignition switch.

Possible Causes & Corrections: 

• Check engine for overheating.
• Check canister purge system staying on.
• Check for leaking injectors.
• Check IAC system. See DIAGNOSTIC AIDS in DTC 35 chart in appropriate G - TESTS W/ CODES article in the ENGINE PERFORMANCE section below.
• TESTS W/CODES - 3.1L
• TESTS W/CODES - 3.8L