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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1997 Ford F-150 Black Smoke at Idle Diagnosis
1997 Ford F-150
The owner recently purchased a 1997 Ford F-150 with a 4.6L V8 engine and noticed a faint amount of black smoke at idle. The vehicle has had its cataly...
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1992 Saturn SL1 Engine Light On with Jerking Issue
1992 Saturn SL1
The owner reports that the engine light is on, and the car jerks when accelerating, particularly at high speeds. The check engine light was confirmed ...
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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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1990 Honda Accord Driver Side Power Seat Belt Issue
1990 Honda Accord
The owner of a 1990 Honda Accord is facing an issue with the driver side power seat belt, which does not retract. The passenger side works fine. Altho...
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2000 Infiniti i30t Won't Turn Off After Starting
2000 Infiniti i30t
The owner reports that their 2000 Infiniti i30t starts and runs normally, but when they attempt to turn off the vehicle, everything inside shuts down ...
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Starter Sticking Issue Diagnosis on 92 Chevy Suburban
1992 Chevrolet Suburban
The owner of a 1992 Chevy Suburban with a 5.7L engine and 145,000 miles reports that the vehicle started exhibiting symptoms resembling ignition or fu...
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Rear-End Jerking and Knocking Sound Diagnosis
2006 Chrysler unknown
The vehicle owner reports a persistent jerking and knocking sound coming from the rear end of their 2006 Chrysler, which they purchased in May 2011. T...
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1992 Toyota Celica Engine Misfiring After Warmup
1992 Toyota Celica All-Trac
The owner reports that their 1992 Toyota Celica All-Trac with a 2.0L turbo engine experiences misfiring after warming up. This issue has persisted for...
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87 Chevy S-10 Truck 2.8 Compression Issue After Gasket Replacement
1982-1993 Chevrolet S-10
The owner recently replaced the intake manifold gaskets on their 1987 Chevy S-10 truck with a 2.8L engine due to a significant leak at the rear. After...
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1990 Honda Civic Stalling Above Idle
1990 Honda Civic
The owner reports that the 1990 Honda Civic stalls above idle unless the throttle is pressed slowly, similar to a carbureted vehicle with a faulty acc...
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2001 Saturn SL2 Starts Then Dies
2001 Saturn SL2
The owner reports that the 2001 Saturn SL2 starts but then immediately dies. After troubleshooting for half a day, the owner has replaced the fuel pum...
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Intermittent No-Start and Sluggish Acceleration Issues
unknown Ford unknown
The vehicle experiences intermittent no-start conditions and sluggish acceleration after prolonged highway driving. Over the past 10 months, the owner...
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1999 GMC Sierra Acceleration Problems and Diagnostics
1999 GMC Sierra
The owner reports that their 1999 GMC Sierra is experiencing acceleration issues. When the gas pedal is pressed, the vehicle sputters and backfires, b...
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2001 Ford Explorer Won't Start - Ignition Issues
2001 Ford Explorer
The owner reports that their 2001 Ford Explorer Sport won't start after a short stop of about 15 minutes. When turning the key, there is no sound, not...
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1995 Jaguar XJ6 Overfilled with Oil and Grinding Noise
1995 Jaguar XJ6
The vehicle owner reports their 1995 Jaguar XJ6 was overfilled with oil, resulting in potential damage to engine seals. Initially, there was a grindin...
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1999 Lincoln Continental Lean Codes Diagnosis
1999 Lincoln Continental
The owner of a 1999 Lincoln Continental reports a solid 'Service Engine Soon' light. After scanning, the codes P0171 and P0174 were retrieved, indicat...
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2000 Saturn LS2 Idle Issues After MAF Replacement
2000 Saturn LS2
The owner of a 2000 Saturn LS2 with a 6-cylinder engine reports intermittent low idle after replacing the mass air flow (MAF) sensor. Initially, the M...
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1998 Audi A4 Quattro V6 Won't Start
1998 Audi A4
The owner reports that their 1998 Audi A4 Quattro V6 (2.8L automatic) does not start after being stored for 12 years. When the key is turned, nothing ...
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