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.

1998 Dodge Caravan Water Pump Replacement Procedure
1998 Dodge Caravan
The owner of a 1998 Dodge Caravan with a 2.4L engine is seeking assistance to replace the water pump. They are unsure of the exact location of the pum...
Dodge Caravan water pump
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1980 Jeep CJ5 Engine Keeps Running After Key Off
1980 Jeep CJ5
The owner reports that the engine of their 1980 Jeep CJ5 continues to run even after turning the ignition key off. This issue started recently, with n...
Jeep CJ5 ignition system
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1999 Ford Expedition Missing on Cylinder No. 6
1999 Ford Expedition
The owner reports that their 1999 Ford Expedition is experiencing a misfire on cylinder number 6, especially noticeable at low idle. They have replace...
Ford Expedition misfire
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1998 Pontiac Transport Engine Turns Over, No Start
1998 Pontiac Transport
The owner reports that the engine turns over without starting. The battery is strong, and the engine fires well, indicating a good ignition system. Ho...
Pontiac Transport fuel system
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1989 GMC C3500 Engine Won't Start After Thermostat Replacement
1989 GMC C3500
The owner replaced the thermostat on their 1989 GMC C3500, but now the engine won't start. They reported that after the thermostat installation, the e...
GMC C3500 no-start issue
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1997 BMW 540i Engine Shakes and Misfires at Idle
1997 BMW 540i
The owner reports that their 1997 BMW 540i runs roughly at idle and occasionally experiences the same issue at highway speeds. The check engine light ...
BMW 540i misfire
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1996 Chevy Cavalier Idling Issues After Warm-Up
1996 Chevrolet Cavalier
The owner describes that the 1996 Chevy Cavalier with a 2.2 OHV engine starts and idles normally until it warms up. Once it enters closed loop operati...
engine management sensor failure idle issues
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1998 Dodge Intrepid Stalling and Lurching Diagnosis
1998 Dodge Intrepid
The owner of a 1998 Dodge Intrepid reports issues while driving, including stalling, lurching, and hard starting. The check engine light has illuminat...
Dodge Intrepid P0355
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2000 Isuzu Rodeo Check Engine Light Diagnosis
2000 Isuzu Rodeo
The owner has a 2000 Isuzu Rodeo with a V-6 engine and automatic transmission. The Check Engine Light has been illuminated for an extended period, but...
Isuzu Rodeo EGR Valve
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1989 Ford Bronco Rough Idle Diagnosis
1989 Ford Bronco
The owner reports that their 1989 Ford Bronco with a 351 engine exhibits a rough idle, even though it has supposedly been rebuilt with about 25,000 mi...
Ford Bronco Rough Idle
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2001 Isuzu Rodeo Hesitation and Sluggish Acceleration
2001 Isuzu Rodeo
The owner reports that their 2001 Isuzu Rodeo hesitates and feels sluggish during acceleration. The vehicle jerks as it struggles to regain power inte...
Isuzu Rodeo P0300
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1976 Buick Century Power Window Relay Location
1976 Buick Century
The owner is trying to locate the power window relay on their 1976 Buick Century. They have checked the engine firewall but were unable to find it. Th...
power_window relay_location Buick_Century
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2001 Lincoln Town Car Engine Hesitation at 40-45 mph
2001 Lincoln Town Car
The owner reports that the 2001 Lincoln Town Car's engine hesitates or misfires specifically at speeds between 40 and 45 mph. The issue arises only du...
Lincoln Town Car Engine Hesitation
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2003 Ford F-150 EGR Valve and Lean Codes Diagnosis
2003 Ford F-150
The owner reports a 2003 Ford F-150 with a 4.6L V8 engine experiencing recurring P0171 and P0174 trouble codes. The engine idles roughly at normal tem...
Ford F-150 P0171
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1995 BMW 525i Cranks but Won't Start After Head Replacement
1995 BMW 525i
The owner reported that after an overheating incident that caused the engine to shut down, they discovered a cracked head. Following the replacement o...
BMW M50 engine no start
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1997 Mercedes Benz 280 Engine Not Firing & Burning Oil
1997 Mercedes Benz 280
The owner reports that their 1997 Mercedes Benz 280 engine is not firing and is burning oil. They have confirmed the timing chain is set correctly at ...
engine_firing_issue oil_consumption valve_seal
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1998 Honda Accord Check Engine Light Diagnosis
1998 Honda Accord
The owner of a 1998 Honda Accord reports that the check engine light is illuminated. After a recent starter replacement, they suspect a vacuum line ma...
Honda Accord check engine light
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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...
Pontiac Firebird stalling
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