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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EGR Valve Code P0406 Diagnosis and Resolution
2005 Dodge Ram 1500
The owner of a 2005 Dodge Ram 1500 is experiencing an issue with the EGR valve. Despite having replaced the EGR valve, the check engine light remains ...
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A/C Shut Off During Acceleration on 2005 Ford Econoline
2005 Ford Econoline E150
The owner of a 2005 Ford Econoline E150 reports an issue with the A/C system where it shuts off almost completely when the gas pedal is pressed, but i...
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2007 Chevy Cobalt - Electrical Issues After Jump Start
2007 Chevrolet Cobalt
Owner's son jump-started the 2007 Chevy Cobalt but mistakenly connected the jumper cables to the fuse box instead of the battery. Now, the engine ligh...
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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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2005 Chevy Tahoe Whining Noise at Low RPM
2005 Chevrolet Tahoe
The owner recently purchased a used 2005 Chevy Tahoe and noticed a whining noise at low RPM after the engine warms up. This noise occurs around 1200 R...
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2005 Cadillac STS Engine Vibration at Idle
2005 Cadillac STS
The owner reports that their 2005 Cadillac STS experiences noticeable engine vibration only at idle. The vehicle runs smoothly when driving at higher ...
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Oil Starvation Diagnosis for 2008 Honda Pilot
2008 Honda Pilot
The owner reports that the engine of their 2008 Honda Pilot, equipped with a 3.5L V6, has been starved for oil, leading to potential internal damage. ...
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Spark Plug Location for 2007 Kia 2.4L Engine
2007 Kia 2007
The owner is inquiring about the location of the spark plugs on a 2007 Kia 2.4L engine. They need guidance on accessing the plugs for potential replac...
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2007 Chevrolet Tahoe Z71 Misfiring Diagnosis
2007 Chevrolet Tahoe Z71
The owner of a 2007 Chevrolet Tahoe Z71 reports intermittent misfiring occurring two weeks after purchase. Despite servicing which included new axles,...
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2005 VW Beetle 1.9 TDI Stalling and Starting Issues
2005 Volkswagen Beetle
The owner of a 2005 VW Beetle 1.9 TDI reports that the engine stalls when slowing down to stop after being driven for a while. When attempting to rest...
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2007 Lexus LS460 Engine Failure After Recall Repair
2007 Lexus LS460
The owner of a 2007 Lexus LS460 with only 5000 miles reported that after taking the vehicle to the dealer for a recall to replace valve springs, the e...
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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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2006 Mitsubishi Endeavor Acceleration Problem
2006 Mitsubishi Endeavor
The vehicle ran fine until the owner attempted to accelerate after a stop. The engine started but lacked power, with the tachometer unresponsive. The ...
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Starting Problems in 1996 Chevy Suburban 5.7L
1996 Chevrolet Suburban
The owner reports that their 1996 Chevy Suburban with a 5.7L CSFI engine has starting issues. Despite replacing several components, including the batt...
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2007 Nissan Versa Loud Rattling Noise Diagnosis
2007 Nissan Versa
The owner reports a loud rattling noise from the engine of their 2007 Nissan Versa with a 1.8L engine, particularly noticeable at 3,500 RPM. Additiona...
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ECU Programming After Engine Swap from 1.4L to 1.8L
2013 Chevrolet Cruze
The mechanic swapped the original 1.4L turbo engine in a 2013 Chevy Cruze for a 1.8L non-turbo engine. The wiring harness and fuse box were changed, b...
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Power Steering Pump Leak Diagnosis and Repair
2006-2007 Mazda 3i
The owner of a 2007 Mazda 3i 2.0 is replacing the engine from a 2006 Mazda 3i 2.0 and has recently installed a new rack and pinion. After hooking up t...
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2002 Dodge Caravan Power Steering Diagnosis
2002 Dodge Caravan
The owner reports a burning rubber smell and possible power steering issues in their 2002 Dodge Caravan. They visited two garages, where the first che...
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