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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1993 Chevy C1500 V6 Stalling Issues at Low Speeds
1993 Chevrolet C1500
The vehicle owner reports that their 1993 Chevy C1500 with a V6 engine stalls at traffic lights and during slow-speed driving. They have already repla...
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2003 Chevy Impala Hard to Start After Tuneup
2003 Chevrolet Impala
Tim reports that after a recent tuneup which included replacing plugs, wires, fuel filter, and air filter, his 2003 Chevy Impala has difficulty starti...
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1993 Nissan Quest Intermittent No-Start Issue
1993 Nissan Quest
The owner reports an intermittent no-start issue with their 1993 Nissan Quest that began three months ago. At times, the vehicle fails to start comple...
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Cadillac Concours Oil Pan and Valve Cover Gasket Repair
1997-2002 Cadillac Concours
The vehicle owner is inquiring about the necessity of removing the transmission to replace the oil pan gasket and valve cover gasket on their Cadillac...
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Audi Cabriolet Windshield Visibility Issue
2005 Audi Cabriolet
The owner of a 2005 Audi Cabriolet reports that the windshield becomes nearly impossible to see through whenever it rains or snows, requiring constant...
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2006 Toyota Noah/Voxy Starting Issues After Shutdown
2006 Toyota Noah/Voxy
The owner reports that the 2006 Toyota Noah/Voxy requires cranking 4-5 times to start in the morning and experiences difficulty restarting after being...
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Toyota Hilux Surf Diesel Engine Bogging Down Issues
1990-1997 Toyota Hilux Surf
The owner of a Toyota Hilux Surf (2.4L diesel) reported that after a mechanic replaced the fuel pump and glow plugs, the vehicle now starts fine. Howe...
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1992 Honda Prelude Dies Out While Driving
1992 Honda Prelude
The owner reports that their 1992 Honda Prelude, with a 4-cylinder manual transmission and around 150,000 miles, experiences a sudden loss of power wh...
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1999 Ford Contour Intermittent Stalling Issue
1999 Ford Contour
The owner of a 1999 Ford Contour reports that the vehicle experiences intermittent stalling while driving, particularly in damp weather conditions. Th...
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1995 GMC Sierra Truck Hesitation on Cold Start
1995 GMC Sierra 1500
The owner describes that their 1995 GMC Sierra 1500 with a 5.7L engine hesitates when cold and does not respond to gas immediately, taking a few secon...
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2003 Ford Focus Won't Start - Fuel Issue Diagnosis
2003 Ford Focus
The owner of a 2003 Ford Focus reports that the vehicle will not start despite turning over fine. Previous repairs include replaced spark plugs and ca...
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2007 Chrysler Pacifica Stalling Issues
2007 Chrysler Pacifica
The owner of a 2007 Chrysler Pacifica reports that the vehicle starts but dies shortly after, unless gas is applied. It is experiencing sputtering dur...
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Starter Location and No-Start Diagnosis for 1990 Lexus LS400
1990 Lexus LS400
The owner of a 1990 Lexus LS400 V8 reports that after driving, the vehicle fails to restart for approximately three hours, indicating a possible elect...
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2008 Dodge Magnum Firing Order and Misfire Diagnosis
2008 Dodge Magnum
The owner of a 2008 Dodge Magnum reports that after changing the third ignition coil and all spark plugs, the check engine light remains on. The car i...
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1990 Jaguar XJ6 No Start Diagnosis
1990 Jaguar XJ6
The owner reports that their 1990 Jaguar XJ6 is experiencing a no-start condition. Fuel pressure is confirmed to be reaching the injectors, and the fu...
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2000 Pontiac Grand Prix GTP Stalling Issue Analysis
2000 Pontiac Grand Prix GTP
The owner reports that their 2000 Pontiac Grand Prix GTP stalls intermittently, especially in summer. The issue began after turning on the AC, causing...
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1993 Dodge Dynasty Alarm Reset Issue
1993 Dodge Dynasty
The owner of a 1993 Dodge Dynasty reports that the factory-installed alarm was activated and had to disconnect the battery to turn it off. After recon...
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2006 Ford Focus ZX3 Starting Issue Diagnosis
2006 Ford Focus ZX3
The owner of a 2006 Ford Focus ZX3, which has had no mechanical issues until now, reports that the vehicle won't start. Previous maintenance has inclu...
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