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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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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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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2009 Toyota Yaris Intake Air Temperature Sensor Analysis
2009 Toyota Yaris
The owner of a 2009 Toyota Yaris is experiencing issues related to the intake air temperature sensor. They discovered that the vehicle does not have a...
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1995 Dodge Intrepid No Start Diagnosis
1995 Dodge Intrepid
The owner's 1995 Dodge Intrepid with a 3.5L engine and approximately 175,000 miles suddenly died. There is fuel pressure, and the ignition coil checks...
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2000 Lincoln Continental Stalling Issues Diagnosis
2000 Lincoln Continental
The owner reports that their 2000 Lincoln Continental has been stalling while driving, particularly in the morning when accelerating. After a stall, t...
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1999 Lincoln Town Car Firing Order and Cylinder Identification
1999 Lincoln Town Car
The owner is trying to identify the firing order and which cylinder is number 5 on their 1999 Lincoln Town Car. They have recently replaced the spark ...
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1996 Buick Park Avenue Oil and Coolant Leak Diagnosis
1996 Buick Park Avenue
The owner reports that the 1996 Buick Park Avenue has engine oil mixing with coolant, and coolant is leaking from the upper intake manifold only when ...
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2003 Dodge Intrepid Timing Issue Diagnosis
2003 Dodge Intrepid
The owner recently replaced the water pump and timing chain on their 2003 Dodge Intrepid with a 2.7L engine. After the repair, the vehicle starts but ...
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1996 Ford Contour Rough Idle and Starting Issues
1996 Ford Contour
The owner reports that their 1996 Ford Contour runs very rough and requires some gas to start. Once started, the engine shakes violently at idle and p...
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Loud Grinding Noise from Saturn SL2 Timing Cover
1999 Saturn SL2
The owner reports a very loud vibrating and grinding sound from the Saturn SL2, suggesting a possible issue with the power steering pump. However, the...
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2002 Saturn SL1 Check Engine Light Diagnostics
2002 Saturn SL1
The owner of a 2002 Saturn SL1 reports that after changing the spark plugs and wires, the check engine light stayed off for three weeks. However, afte...
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