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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Intermittent Stalling and Power Loss on Acceleration
1997 Chevrolet C/K 1500
The owner reports that their 1997 Chevrolet C/K 1500 experiences intermittent stalling and power loss when accelerating, especially going uphill. On s...
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Starter Failure Diagnosis on 2003 GMC Sierra
2003 GMC Sierra
The vehicle owner reports a starter failure on their 2003 GMC Sierra. Initially, the wire from the solenoid to the starter burnt off, prompting a star...
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2003 Honda Civic VTEC Gutless Acceleration Issue
2003 Honda Civic
The owner of a 2003 Honda Civic EX with a VTEC engine is experiencing gutless acceleration, along with the key light, check engine light, and seat bel...
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Thermostat Installation Alignment Direction
2001 Nissan Sentra
The owner is replacing the thermostat in their 2001 Nissan Sentra due to a P0128 fault code indicating that the coolant temperature is below the therm...
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1997 Chevy S-10 Ignition and Accessory Failures
1997 Chevrolet S-10
The owner reports that their 1997 Chevy S-10 has no warning lights illuminating when the key is turned on. The vehicle can shift gears without pressin...
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1996 Subaru Outback Won't Start When Hot
1996 Subaru Outback
The owner of a 1996 Subaru Outback with 175,000 miles reports that the vehicle starts reliably when cold. However, after multiple stops and starts dur...
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2001 Jeep Grand Cherokee Laredo Idle Fluctuation Issue
2001 Jeep Grand Cherokee Laredo
The owner of a 2001 Jeep Grand Cherokee Laredo with a 4.0L engine reports an issue where the engine almost stalls when at a stop. Initially, after the...
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1977 Dodge 440 Engine Pinging Diagnosis
1977 Dodge 440
The owner reports that their 1977 Dodge 440 engine experiences severe pinging after warming up, especially noticeable after driving about 10 miles. Th...
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1992 Plymouth Acclaim High Idle Issue Diagnosis
1992 Plymouth Acclaim
The owner reports that their 1992 Plymouth Acclaim idles too fast, behaving as if the gas pedal is pressed even when parked. They mention being able t...
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Intermittent Power Loss with Flashing Check Engine Light
2003 Jeep Liberty
The owner reports that after replacing the thermostat on their 2003 Jeep Liberty 3.7L V6, the check engine light began flashing and the vehicle experi...
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2009 Nissan Drive Belt Change Instructions
2009 Nissan Other Models
The vehicle owner is seeking written instructions for changing the drive belt on a 2009 Nissan model. They have received guidance on how to use the au...
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2003 Dodge Dakota RPM Fluctuation Diagnosis
2003 Dodge Dakota
The owner reports experiencing RPM fluctuation while driving, without any loss of engine power. The RPM fluctuates at any speed, and hitting bumps cau...
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2001 Ford F-150 Oil Temp Light Issue
2001 Ford F-150
The owner recently drove over a rough patch due to bad weather and after returning home, noticed the Oil Temp light illuminated and the oil pressure g...
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2007 Chevy Equinox Engine Sputter Diagnosis
2007 Chevrolet Equinox
The owner reported that their 2007 Chevy Equinox started to sputter when accelerating, particularly noticeable at speeds between 45-50 MPH. The sputte...
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2002 Nissan Sentra 1.8 Starts but Idles with No Power
2002 Nissan Sentra
The owner reports that their 2002 Nissan Sentra 1.8 starts but immediately idles roughly and has no power when accelerating. Despite recent replacemen...
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1980 Pontiac Firebird Won't Start After Alarm Installation
1980 Pontiac Firebird
The owner reports that their 1980 Pontiac Firebird won't start after an alarm system was installed. They mentioned that while fuel can be sprayed into...
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2003 GMC Sonoma Hard Start & P0171 Code Diagnosis
2003 GMC Sonoma
The owner has a 2003 GMC Sonoma with a 2.2L engine and 140K miles that experiences hard starting when the fuel gauge is at 1/4 tank or lower. They oft...
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2008 GMC Yukon Reduced Engine Power Diagnosis
2008 GMC Yukon
The owner of a 2008 GMC Yukon reports experiencing reduced engine power, which has persisted despite multiple repair attempts. The vehicle has had the...
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