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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1997 BMW Z3 Fuel Pump Diagnostic Analysis
1997 BMW Z3
The owner of a 1997 BMW Z3 is experiencing engine performance issues, specifically stalling and misfiring after driving a few miles. They reported tha...
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2003 Audi A4 Engine Power Fades Under Load
2003 Audi A4
The owner of a 2003 Audi A4 2.0L petrol model reports that the engine power fades while driving, particularly when the engine exceeds 2000 RPM. The ve...
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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...
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1981 Ford F-150 Engine Failure Diagnosis
1981 Ford F-150
The owner reported that while driving their 1981 Ford F-150 with a 351 engine, the vehicle started smoking and making a dragging noise. After shutting...
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2000 Chrysler Town and Country Alarm System Issue
2000 Chrysler Town and Country
The owner reports that the van will not start, which they suspect is due to the alarm system. It starts for 10 seconds three times before failing to s...
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Black Smoke from Exhaust in 1995 Toyota Corolla
1995 Toyota Corolla
The owner of a 1995 Toyota Corolla with a 1.6L engine reports black smoke coming from the exhaust. Despite replacing numerous components including the...
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1999 Mazda 626 Loud Squeal Diagnosis
1999 Mazda 626
The owner of a 1999 Mazda 626 describes a loud squealing noise coming from the engine compartment, particularly noticeable during acceleration. They r...
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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...
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2003 Ford Focus zx3 2.3L A/C Load Misfire Diagnosis
2003 Ford Focus zx3
The owner reports that their 2003 Ford Focus zx3 with a 2.3L engine cuts out when the air conditioner is turned on, although it does not stall. The ch...
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P0440 Code Diagnosis on 2008 Saturn Vue
2008 Saturn Vue
The owner reports a P0440 code on their 2008 Saturn Vue. After conducting a smoke test, no leaks were found. They also noted a rattling noise from the...
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1977 Chevy Suburban Intermittent Starting Issue
1977 Chevrolet Suburban
The owner reports that their 1977 Chevy Suburban sometimes fails to start, showing no signs of power or clicking when attempting to start. At other ti...
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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...
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1999 Jeep Grand Cherokee CV-Shaft Installation Issue
1999 Jeep Grand Cherokee
The owner has replaced both front CV-Shafts on their 1999 Jeep Grand Cherokee Laredo. However, while installing the front-right shaft, it does not see...
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Persistent Coolant Leak Diagnosis for 2000 Alero
2000 Oldsmobile Alero
The owner of a 2000 Oldsmobile Alero with a 2.4L engine reports a recurring coolant leak that becomes apparent after driving and parking the vehicle. ...
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4WD Engagement Issue in 2007 Nissan Xterra
2007 Nissan Xterra
The owner of a 2007 Nissan Xterra reports that the 4WD system does not engage. When attempting to activate the 4WD, the indicator light on the dashboa...
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Diagnosing Power Steering Pump Removal for Water Pump Replacement
1988 Ford Bronco
The owner is attempting to replace a leaking water pump on a 1988 Ford Bronco. They have successfully removed most components but are struggling to de...
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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...
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1998 Saturn Engine Compatibility with 1999 Model
1999 Saturn SL1
The owner has a 1999 Saturn SL1 with a locked-up 1.9L dual overhead cam engine that needs replacement. They have a complete 1998 Saturn SL1 available ...
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