Symptom Diagnosis

Symptom checks cannot be used properly unless the problem occurs while the vehicle is being tested. To reduce diagnostic time, ensure steps in BASIC TESTING and TESTS W/CODES articles were performed before diagnosing a symptom. Recommended system and component checks may not apply to all vehicles.

Symptoms available for diagnosis include the following.

• Engine Will Not Start
• Hard To Start
• Cold Fast Idle Too Low
• Cold Fast Idle Too High
• Idle RPM Fluctuates
• Misfire Or Rough Operation
• Lack Of Power
• Engine Stalls