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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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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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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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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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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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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1999 Cadillac El Dorado Not Starting Issue
1999 Cadillac El Dorado
The vehicle was starting without issues but suddenly stopped starting. It now only turns over without any signs of starting, such as backfiring. The o...
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1995 Chevy Engine Compatibility with 1999 Suburban
1999 Chevy Suburban
The owner of a 1999 Chevy Suburban, which has a cracked block, is concerned about the compatibility of a 1995 Chevy engine they purchased as a replace...
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Mazda RX-7 Won't Start Despite Fuel and Spark
1990 Mazda RX-7
The owner reports that their 1990 Mazda RX-7 with a 1.3L engine and 170,000 miles will not start, despite having fuel and spark. The battery is fully ...
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2010 Dodge Charger Rough Idle Diagnosis
2010 Dodge Charger
The owner of a 2010 Dodge Charger SXT with 48,000 miles reports a rough idle characterized by a slight vibration felt in the seat while at a stoplight...
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1990 Mitsubishi Mirage Engine No Start Diagnosis
1990 Mitsubishi Mirage
The owner of a 1990 Mitsubishi Mirage with a 1.5L MPFI engine reports that the engine will not fire. They mentioned that the timing was confirmed to b...
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