Engine Controls - Tests W/O Codes: Symptoms: Notes

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Symptom checks cannot be used properly unless problem occurs while vehicle is being tested. To reduce diagnostic time, ensure steps in BASIC TESTING and appropriate TESTS W/CODES articles in the ENGINE PERFORMANCE section were performed before diagnosing a symptom. Symptoms available for diagnosis are as follows:

No Crank
Hard Start/Long Crank
Stalls After Start
No Start/Normal Crank
Slow Return To Idle
Rough Idle
Fast Idle (Diesels/Runs On)
Low Idle (Stalls On Deceleration)
Hesitates Or Stalls
Surge (On Acceleration Or Cruise)
Backfires
Loss Of Power
Spark Knock
Poor Fuel Economy
Emissions Compliance
Warning Indicator Lights
Improper Transmission Shift
High Oil Consumption
Engine Runs Hot (Overheating)
Engine Runs Cold
Exhaust Smoke
Sulphur "Rotten Egg" Smell
Diesel Engine (Engine Induced Symptoms)
Diesel Engine (Transmission Induced Symptoms)
Engine Noise
Vibration
A/C System Not Functioning (Lack Of Cooling)
A/C System Always On
A/C Clutch Does Not Disengage Under WOT Conditions