Symptom Diagnosis
Symptom checks cannot be used properly unless problem occurs while vehicle is being tested. To reduce diagnostic time, ensure steps in BASIC TESTING and TESTS W/CODES articles below have been performed before diagnosing a symptom.
Symptoms available for diagnosis include:
- Engine Will Not Start
- Difficult Cold Start
- Fast Idle Out Of Specification
- Rough Idle When Warm
- Idle RPM High When Warm
- Idle RPM Low When Warm
- Stalling During Warm-Up
- Stalling After Warm-Up
- Misfire Or Rough Operation
- Emission Test Failure
- Lack Of Power
Recommended system and component checks may not apply to all vehicles.