Engine Controls Tests W/O Codes - 7.5L EEC-IV: Symptoms: Notes

Symptom checks cannot be used properly unless problem occurs while vehicle is being tested. To reduce diagnostic time, ensure basic diagnostic procedures in the BASIC TESTING - 7.5L article and self-diagnostic steps in the TESTS W/CODES - 7.5L article 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
• Exhaust Smoke
• Fuel Smell
• Engine Noise
• Vibration
• A/C System Always On