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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Turn Signals Inoperative When Cold
2002 Saturn L300
The owner reports that the turn signals on their 2002 Saturn L300 do not function when the car is cold, particularly in winter conditions in Michigan....
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1999 GMC Safari Engine Oil Burst Diagnosis
1999 GMC Safari
The owner reports that after changing the radiator and removing the thermostat to address overheating issues, the temperature gauge spiked during a ro...
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Oil Light Issue Diagnosis for 2010 Ford Fusion
2010 Ford Fusion
Melissa and her husband own a 2010 Ford Fusion, and recently the check oil light has illuminated. This occurred shortly after they had the oil changed...
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1987 Volkswagen Cabriolet V Belt Installation
1987 Volkswagen Cabriolet
The owner reported that the V belt broke while driving their 1987 Volkswagen Cabriolet. They have purchased a new belt but are unsure how to install i...
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2006 Nissan Altima Engine Stalls and No Acceleration
2006 Nissan Altima
The owner of a 2006 Nissan Altima SL reports that the engine stalls weekly. The vehicle does not accelerate when in Neutral or Park, but restarting th...
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U1000 Code Diagnosis for 2005 Nissan Pathfinder
2005 Nissan Pathfinder
The owner of a 2005 Nissan Pathfinder SE reports that the engine service light has illuminated. A diagnostic scan performed by a friend revealed a U10...
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Intermittent Ticking Noise During Engine Warm-Up
2006 Hyundai Elantra
The owner reports a ticking sound from the engine during warm-up, concerning whether it's normal behavior or indicative of a problem. The vehicle is n...
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Rattling Noise from 2006 Mitsubishi Galant Under Acceleration
2006 Mitsubishi Galant
The owner of a 2006 Mitsubishi Galant (4-cylinder) reports a significant rattling noise when accelerating. Initially, the noise occurred only during s...
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1992 Toyota Corolla Engine Oil Leak Diagnosis
1992 Toyota Corolla
The owner of a 1992 Toyota Corolla has reported an oil leak from the engine. They mentioned that the vehicle can be driven for about 1000 miles withou...
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1993 Nissan Quest Intermittent No-Start Issue
1993 Nissan Quest
The owner reports an intermittent no-start issue with their 1993 Nissan Quest that began three months ago. At times, the vehicle fails to start comple...
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2005 Ford Escape Stalling After Long Trips
2005 Ford Escape
The owner reports that the 2005 Ford Escape experiences stalling after long trips at high speeds. The vehicle operates normally during daily driving c...
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1991 Toyota Camry No Fire to Plugs Diagnosis
1991 Toyota Camry
The owner's 1991 Toyota Camry was running fine until it suddenly died. After diagnosis, they replaced the igniter and the entire distributor, includin...
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1992 Ford Escort No Power Diagnosis
1992 Ford Escort
The owner reports that their 1992 Ford Escort has no power, especially noticeable during faster turns. They have also observed smoke coming from under...
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1990 Volvo 740 GLE Won't Start After Tune-Up
1990 Volvo 740
The owner reports that the 1990 Volvo 740 GLE, with 210,000 miles, won't start after a recent tune-up. They noted it started fine before the maintenan...
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2006 Honda Accord Moves Without Gas
2006 Honda Accord
The owner of a 2006 Honda Accord reports that the vehicle unexpectedly moves forward without pressing the gas pedal. This issue started recently and s...
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1993 Mazda Truck Won't Start - Electrical Issue Diagnosis
1993 Mazda Truck
The owner reports that their 1993 Mazda Truck won't start. They have checked various electrical components and fuses but found no indication of a shor...
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1994 Geo Prizm Won't Start - Ignition System Diagnosis
1994 Geo Prizm
The owner reports that their 1994 Geo Prizm won't start despite having power for lights, radio, and windows. The vehicle clicks when attempting to sta...
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1990 Lexus LS 400 Seat Stuck in Upright Position
1990 Lexus LS 400
The passenger seat of my 1990 Lexus LS 400 is stuck in an upright position, making it uncomfortable for passengers. The electric seat mechanism no lon...
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