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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2009 Ford Focus Power Loss Diagnosis
2009 Ford Focus
The owner reports experiencing power loss in their 2009 Ford Focus TDCi, particularly noticeable during acceleration. The problem occurs intermittentl...
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1994 Toyota Camry Rattling Noise Diagnosis
1994 Toyota Camry
The owner of a 1994 Toyota Camry reports a loud metallic rattle, suspected to be from the timing chain area on the passenger side. The sound improved ...
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1996 Acura TL 2.5 Running Rough After Timing Belt Change
1996 Acura TL
The owner reports that their 1996 Acura TL 2.5 is running rough after they changed the timing belt, water pump, and spark plugs. Initially, the vehicl...
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2003 Ford Taurus Won't Start After Stopping
2003 Ford Taurus
The owner reports that the 2003 Ford Taurus starts fine when cold but fails to start after being turned off for a short period, such as when running e...
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Honda Civic Slow Start on Cool Mornings
1994 Honda Civic
The owner of a 1994 Honda Civic reports that the vehicle has been experiencing slow starts on cool mornings, taking approximately 4-5 seconds of stutt...
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1993 Chrysler LeBaron Speedometer Malfunction
1993 Chrysler LeBaron
The owner of a 1993 Chrysler LeBaron convertible reports an issue with the speedometer, which consistently reads 12 miles per hour slower than actual ...
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Dodge Neon Rough Idle and Misfire Diagnosis
2005 Dodge Neon
The owner reports that their 2005 Dodge Neon has a check engine light on and is running rough. The vehicle experiences misfiring and difficulties shif...
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1996 Pontiac Grand Prix Stalling Issues
1996 Pontiac Grand Prix
The vehicle owner reports that their 1996 Pontiac Grand Prix stalls unexpectedly while driving. After stalling, the vehicle won't start immediately, b...
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1995 Ford Explorer Power Steering Issues
1995 Ford Explorer
The owner reports that their 1995 Ford Explorer's steering wheel shimmies and shakes when turning. They have checked the power steering fluid, which i...
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1995 Ford F-150 Stalling and Surging Issues
1995 Ford F-150
The owner reports that their 1995 Ford F-150 stalls at idle and near-idle speeds, as well as surges during highway cruising. They have replaced severa...
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Intermittent Power Loss After Throttle Body Replacement
2008 Pontiac Grand Prix
The owner reports that after replacing the throttle body and pedal assembly on their 2008 Pontiac Grand Prix, the vehicle runs worse than before. They...
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2007 Cadillac V6 Spark Plug Replacement Guide
2007 Cadillac 2007 V6
The vehicle owner is looking for a detailed diagram for removing the air intake on a 2007 Cadillac V6 engine to access the spark plugs. They are aware...
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2001 Pontiac Grand Prix 3.8L Blue Smoke on Deceleration
2001 Pontiac Grand Prix
The owner of a 2001 Pontiac Grand Prix GT with a 3.8L engine and 194,000 miles reports occasional dense blue smoke during deceleration, lasting one to...
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1996 Ford Ranger Engine Quit Diagnosis
1996 Ford Ranger
The owner of a 1996 Ford Ranger XLT SuperCab with a 2.3L engine and 159,000 miles reported that the vehicle sputtered and then quit while idling in li...
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2008 Suzuki Maruti 800 White Smoke from Exhaust
2008 Suzuki Maruti 800
The owner reports that their 2008 Suzuki Maruti 800 has been emitting white smoke from the exhaust for the past week. They are seeking advice on how t...
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1990 Pontiac Grand Prix Engine Stalling Issue
1990 Pontiac Grand Prix
The owner reports that their 1990 Pontiac Grand Prix experiences engine stalling after about 20 minutes of driving. Initial repairs included replacing...
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2005 Kia Optima Power Loss Diagnosis
2005 Kia Optima
The owner reports that their 2005 Kia Optima sputters and jumps when cranking, with a tendency to die in reverse and sometimes in drive. Acceleration ...
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1999 Honda Accord Rough Start Issue
1999 Honda Accord
The owner reports that their 1999 Honda Accord with 105,000 miles typically does not start unless gas is applied. Once started, the engine runs smooth...
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