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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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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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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2006 Toyota Corolla Potential Major Repairs
2006 Toyota Corolla
The car owner is exploring the most expensive possible repairs for their 2006 Toyota Corolla. They mentioned that their father suggested the air condi...
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Intermittent No-Start Condition in 2000 Ford Econoline
2000 Ford Econoline
The owner reports that their low mileage 2000 Ford Econoline van has suddenly stopped turning over after being turned off. It has been running well pr...
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1997 Dodge Ram Idle Issues with Sensors and Vacuum
1997 Dodge Ram
The owner reports that their 1997 Dodge Ram will not hold an idle and runs sluggishly with knocking and pinging while driving. The engine dies when co...
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Engine Wiring Issues Causing No Start Condition
unknown Jeep unknown
The owner reported that while driving, the engine suddenly lost power and stopped running when they went to refuel. They are now unable to restart the...
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1987 Chevy Truck No Power Diagnosis
1987 Chevrolet Truck
The owner reports that their 1987 Chevy Truck has no electrical power. They have checked and replaced fusible links near the starter and the accessori...
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2007 Dodge Magnum Electronic Throttle Control Issue
2007 Dodge Magnum
The owner reports that after driving for a while, the electronic throttle control light activates, followed by the electronic stability program light....
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1992 Buick Roadmaster Power Window Issues
1992 Buick Roadmaster
The driver side power windows in the 1992 Buick Roadmaster do not operate when the control is pressed, while the passenger side windows function prope...
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1995 Pontiac Firebird Stalling and Idle Issues
1995 Pontiac Firebird
The owner reports that their 1995 Pontiac Firebird is experiencing stalling issues, especially while driving on the highway. After replacing the ignit...
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Rattling Noise from 2006 Mitsubishi Galant Under Acceleration
2006 Mitsubishi Galant
The owner of a 2006 Mitsubishi Galant (4-cylinder) reports a significant rattling noise when accelerating. Initially, the noise occurred only during s...
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1985 Chevy Blazer Flexplate Cracking Issue
1985 Chevrolet Blazer
The owner reports that after getting the 1985 Chevy Blazer running again, it has gone through two flexplates, both exhibiting fractures radiating from...
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1991 Ford Probe Rough Idle and Acceleration Issues
1991 Ford Probe
The owner reports that the 1991 Ford Probe idles roughly and can stall when in gear at a stop, but runs fine in park or neutral. When accelerating slo...
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1993 Dodge Stealth Engine Stalling Issue
1993 Dodge Stealth
The owner of a 1993 Dodge Stealth reports that the vehicle ran fine for a month after purchase. Now, when turning the key, it clicks and the engine st...
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Intermittent Stalling Under Load in '87 Ford Ranger
1987 Ford Ranger
The owner reports that their 1987 Ford Ranger bucks and sputters when climbing hills, leading to stalling, while it idles smoothly and drives well on ...
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2001 Volkswagen Jetta Won't Start - Electrical Troubleshooting
2001 Volkswagen Jetta
The owner reports that their 2001 Volkswagen Jetta won't start. They have checked several components, including directly powering the fuel pump from t...
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2007 Dodge Ram RPM Fluctuation with AC On
2007 Dodge Ram
The owner of a 2007 Dodge Ram with a 5.7L Hemi engine reports that when the AC is turned on, the RPMs fluctuate by about 200 RPM, oscillating up and d...
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1996 Toyota Camry Backfiring Diagnosis
1996 Toyota Camry
The owner recently reassembled the engine after fixing the transmission. The car started backfiring, and while the timing belt is correctly installed,...
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