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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1978 Chevy Camaro Low Oil Pressure Issue
1978 Chevrolet Camaro
The owner recently built a 350 engine for their 1978 Chevy Camaro and is experiencing low oil pressure issues. Initially, the oil pressure gauge reads...
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2000 Dodge Dakota Running Rough and Stalling Issues
2000 Dodge Dakota
The owner reports that their 2000 Dodge Dakota with a 4.7L engine and 192,000 km suddenly started running very roughly after a quick stop. They manage...
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2001 Hyundai Accent Hard Start and Rough Idle Diagnosis
2001 Hyundai Accent
The owner reports that the 2001 Hyundai Accent has difficulty starting and exhibits a rough idle when cold. The problem occurs primarily in the mornin...
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1999 Saturn SC2 Compression Test Analysis
1999 Saturn SC2
The owner reports that their 1999 Saturn SC2 is idling rough and burning a little oil. After performing a compression test, they found dry readings be...
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2002 Dodge Truck Starting Problem Diagnosis
2002 Dodge Truck
The owner reports an intermittent starting issue with their 2002 Dodge Truck. Sometimes the engine starts normally, while other times it only produces...
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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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1997 Buick Park Avenue Security System Issue After Engine Swap
1997 Buick Park Avenue
The owner swapped the engine from a 1999 Buick Park Avenue Ultra into a 1997 Buick Park Avenue Ultra, but the vehicle won't start due to the key secur...
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1997 Saturn SC2 Timing Chain Adjustment Procedure
1997 Saturn SC2
The owner is having trouble starting their 1997 Saturn SC2 after attempting to adjust the timing chain. They followed a timing diagram but now the veh...
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2001 Jeep Grand Cherokee Laredo Idle Fluctuation Issue
2001 Jeep Grand Cherokee Laredo
The owner of a 2001 Jeep Grand Cherokee Laredo with a 4.0L engine reports an issue where the engine almost stalls when at a stop. Initially, after the...
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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 Saturn Vue Stalling Issues After Accident
2003 Saturn Vue
The owner experienced intermittent stalling after an accident that required a battery recharge. The garage reset the computer but found no issues. The...
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1998 Saturn SC2 Turns Over but Won't Start
1998 Saturn SC2
The owner reported that while backing out of the driveway, the engine suddenly stopped as if the key was turned off. The engine cranks but fails to st...
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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 Acura TL Car Start But Stall Diagnosis
1999 Acura TL
The owner reports that the 1999 Acura TL starts but stalls shortly after. The idling speed is between 1500-2300 RPM when cold, stabilizing just under ...
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1999 Ford Ranger Engine Revving Intermittently
1999 Ford Ranger
The owner reports that their 1999 Ford Ranger's engine revs unexpectedly about 50% of the time when shifting or pressing the clutch to stop. They've r...
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2002 Saturn SL2 Starts for 1 Sec, Then Dies
2002 Saturn SL2
The owner has a 2002 Saturn SL2, which they recently changed the engine on. After the replacement, the vehicle cranks and starts for about one second ...
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1997 Ford Taurus Intermittent Stalling and No Start
1997 Ford Taurus
The owner's wife was driving the 1997 Ford Taurus when the car began to slow down and eventually shut off while on the highway. After pulling over, th...
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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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