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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Backfiring Issue After Engine Swap
2000 Chevrolet Impala
The owner swapped a 3.5L engine from a 2005 Saturn Relay into their 2000 Chevrolet Impala, replacing the worn-out 3.4L engine. After changing the plen...
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2005 Chevrolet Lumina Engine Oil Leakage Diagnosis
2005 Chevrolet Lumina
The owner discovered engine oil leaking on the road after parking the vehicle. They suspect the oil is leaking from the oil pan based on their observa...
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2009 Mazda 3 Engine Stalling Diagnosis
2009 Mazda 3
The owner reports that their 2009 Mazda 3, with approximately 65,000 km on the odometer, experiences intermittent engine stalling while driving. The e...
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2005 Ford Taurus High Engine RPMs Diagnosis
2005 Ford Taurus
The owner reports that the 2005 Ford Taurus engine revs by itself, with RPMs remaining high even at a stop. The vehicle accelerates without pressing t...
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Engine Failure Due to Overfilled Crankcase
2009 Chevrolet Traverse
The owner reports a catastrophic engine failure while driving their 2009 Chevrolet Traverse at highway speeds in Florida. The vehicle shuddered for 5-...
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2009 Nissan Versa RPM Gauge Needle Delay
2009 Nissan Versa
The owner experienced a temporary issue with the RPM gauge needle on their 2009 Nissan Versa. After starting the car in hot weather, the needle remain...
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2005 Toyota Sequoia Engine Replacement or Repair Analysis
2005 Toyota Sequoia
The owner of a 2005 Toyota Sequoia is facing a serious issue after neglecting to replace the timing belt. The belt broke, resulting in two bent valves...
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2008 Saturn Aura Acceleration Issues and Power Loss
2008 Saturn Aura
The owner of a 2008 Saturn Aura reports that the vehicle struggles to accelerate, with the RPM not exceeding 2,000 and speed limited to 45-55 mph. The...
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Alternator Removal Challenge in 2005 Lincoln Aviator
2005 Lincoln Aviator
The owner has disconnected the alternator on their 2005 Lincoln Aviator but is struggling to remove it due to the engine design. They cannot lift it u...
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Concerns About Short-Distance Driving in Diesel Hyundai
2014 Hyundai Xcent
The owner has a 2014 Hyundai Xcent diesel, which they only drive 30 km per week. They are concerned about potential engine problems due to infrequent ...
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2007 Nissan Pathfinder A/C Diagnostic Analysis
2007 Nissan Pathfinder
The owner of a 2007 Nissan Pathfinder reported that the A/C was not cooling as effectively as normal, especially in high temperatures exceeding 100°F....
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Dodge Neon Cranks but Does Not Start
2005 Dodge Neon SXT
The owner of a 2005 Dodge Neon SXT 2.0 reports that the vehicle cranks but does not start. They have ensured that there is fuel, spark, and compressio...
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Brake Pedal Goes to Floor After Jump Start Incident
2007 Chevrolet Van
The owner experienced a dead battery in their 2007 Chevy van and attempted to jump-start it using a 2004 model. After about 30 seconds, the jumper cab...
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2007 Ford Explorer Engine Squeak Diagnosis
2007 Ford Explorer
The owner reports a squeaking noise from the engine on start-up, during idle, and while driving. The squeak increases in frequency with acceleration, ...
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2009 Camry Low Power and Shaking with Check Engine Light
2009 Toyota Camry
The owner reports that the 2009 Toyota Camry has low power and is shaking, accompanied by the check engine light illuminating intermittently. Initiall...
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2005 GMC Envoy Engine Whining Diagnosis
2005 GMC Envoy
The owner reports that their 2005 GMC Envoy, equipped with a Vortec straight 6 engine, produces a whining noise that intensifies with acceleration and...
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2007 Chrysler PT Cruiser Rough Running at Idle
2007 Chrysler PT Cruiser
The owner reported that the check engine light illuminated and the vehicle runs rough at idle speed. However, it performs well during regular driving ...
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2005 Chevrolet Venture Rough Idling Diagnosis
2005 Chevrolet Venture
The owner reports that their 2005 Chevrolet Venture is experiencing rough idling, which started mildly but has since worsened significantly. The engin...
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