Engine System Fault Analysis Cases
Comprehensive collection of engine system fault analysis cases. Get detailed diagnostic solutions for starting issues, performance problems, ignition system faults, and cooling system failures.
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1995 GMC Jimmy Bad Idle Diagnosis
1995 GMC Jimmy
The owner of a 1995 GMC Jimmy with a 4.3 Vortec CPI engine, having 163,000 miles, reports poor idle quality. The vehicle experiences rough idling, and...
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1997 Saturn SL2 Hard Starting Diagnosis
1997 Saturn SL2
The owner reports that the vehicle has difficulty starting, cranking for an extended period before finally starting. Previous work includes changing t...
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Intermittent Stalling and Grinding Noise Diagnosis
2001 Saturn L300
The owner reports that their 2001 Saturn L300 experiences intermittent stalling while driving, accompanied by a grinding or 'put put' noise, especiall...
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1999 Honda Civic Random Idle Surge on 2nd Start
1999 Honda Civic
The owner reports that their 1999 Honda Civic experiences a random idle surge specifically on the second start. This issue occurs after the engine is ...
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Oil Light Activation at Idle with Full Oil Level
1998 Dodge Grand Caravan
The owner of a 1998 Dodge Grand Caravan with 132,000 miles reports that the oil light activates and beeps only when slowing down to a stop. As soon as...
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2000 Nissan Sentra White Smoke Issue with A/C
2000 Nissan Sentra
The owner of a 2000 Nissan Sentra FE reports that the vehicle is emitting thick white smoke from the exhaust, particularly when the air conditioning i...
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Mitsubishi Pajero Mini Transmission Diagnostics
1994-2000 Mitsubishi Pajero Mini H58A
The owner reports issues with the automatic transmission of their Mitsubishi Pajero Mini H58A. Symptoms include inconsistent shifting and potential sl...
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1996 Toyota Corolla Intermittent Stalling Issue
1996 Toyota Corolla
The vehicle owner reports that their 1996 Toyota Corolla experiences intermittent stalling without warning. The distributor was replaced recently afte...
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1998 Dodge Intrepid Won't Crank or Start
1998 Dodge Intrepid
The owner of a 1998 Dodge Intrepid reported intermittent starting issues, where the car would only start occasionally. After the battery died, it was ...
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1989 Dodge Daytona Starting Issue Analysis
1989 Dodge Daytona
The owner reports that their 1989 Dodge Daytona does not want to start, particularly in cold weather. A recent tune-up was performed without issues. H...
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1998 Ford Explorer Speedometer and Odometer Failure
1998 Ford Explorer
The owner of a 1998 Ford Explorer reports that both the speedometer and odometer stop functioning after driving for 5 to 8 miles. Initially suspected ...
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2000 Plymouth Neon Won't Start Diagnosis
2000 Plymouth Neon
The owner reports that their 2000 Plymouth Neon won't start. They have checked for spark and fuel pressure but have not been able to identify the issu...
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1996 Chevrolet Corsica Cranks But Won't Start
1996 Chevrolet Corsica
The owner reports that their 1996 Chevrolet Corsica cranks but will not start. The vehicle does start with starting fluid and can be kept running with...
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1981 Ford F-150 Engine Failure Diagnosis
1981 Ford F-150
The owner reported that while driving their 1981 Ford F-150 with a 351 engine, the vehicle started smoking and making a dragging noise. After shutting...
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1985 Toyota Pickup Truck No Start Diagnosis
1985 Toyota Pickup Truck
The owner reports that their 1985 Toyota Pickup Truck would not start this morning. The vehicle is noted to be in great shape overall. After attempts ...
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1995 Chevy Blazer Won't Start - Diagnostic Analysis
1995 Chevrolet Blazer
The owner reports that their 1995 Chevy Blazer with a 6-cylinder engine and automatic transmission won't start. Previously, they experienced rough run...
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1996 Toyota 4Runner Won't Start After Fuel Pump Replacement
1996 Toyota 4Runner
The owner reports that their 1996 Toyota 4Runner with a 6-cylinder engine and automatic transmission won’t start after replacing the fuel pump and fil...
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2003 GMC Sonoma Hard Start & P0171 Code Diagnosis
2003 GMC Sonoma
The owner has a 2003 GMC Sonoma with a 2.2L engine and 140K miles that experiences hard starting when the fuel gauge is at 1/4 tank or lower. They oft...
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