Symptom Diagnosis

Symptom checks cannot be used properly unless the problem occurs while the vehicle is being tested. To reduce diagnostic time, ensure Basic Diagnostic Procedures in the BASIC TESTING - GS-R article and Self-Diagnostic Tests in the TESTS W/CODES - GS-R article were performed before diagnosing a symptom. Recommended system and component checks may not apply to all vehicles. Trouble shoot symptom probable causes in order listed under symptom checks. 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