Air Conditioning Problems Analysis Cases

Analysis of AC system failures, cooling problems, and HVAC performance issues.

1998 Chevy Lumina 3.1L Cuts Out When Accelerating
1998 Chevrolet Lumina
The owner describes a 1998 Chevy Lumina 3.1L that starts fine after sitting for a few days but cuts out severely when accelerating. The vehicle strugg...
Chevrolet Lumina fuel system
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2002 Pontiac Firebird Headlamp Door Module Diagnosis
2002 Pontiac Firebird
The owner reports that when turning off the headlamps, the headlamp door motors continue to run for approximately six seconds. This results in a loud ...
headlamp module motor issues electrical diagnosis
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1997 Chevy Suburban Random Multiple Misfire Diagnosis
1997 Chevy Suburban
The vehicle owner reports a random multiple misfire in their 1997 Chevy Suburban with a 5.7L engine. They have replaced the injectors, spark plugs, wi...
Chevy Suburban misfire
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87 Chevy S-10 Truck 2.8 Compression Issue After Gasket Replacement
1982-1993 Chevrolet S-10
The owner recently replaced the intake manifold gaskets on their 1987 Chevy S-10 truck with a 2.8L engine due to a significant leak at the rear. After...
Chevrolet S-10 compression
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1999 GMC Sierra Acceleration Problems and Diagnostics
1999 GMC Sierra
The owner reports that their 1999 GMC Sierra is experiencing acceleration issues. When the gas pedal is pressed, the vehicle sputters and backfires, b...
GMC Sierra acceleration issues
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Engine Light and Heater Issues in Peugeot 307
2001-2008 Peugeot 307
The owner of a Peugeot 307 1.4 petrol reports that the engine management light began flashing upon purchase, indicating issues with the catalytic conv...
Peugeot 307 engine light
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2000 Saturn LS2 Idle Issues After MAF Replacement
2000 Saturn LS2
The owner of a 2000 Saturn LS2 with a 6-cylinder engine reports intermittent low idle after replacing the mass air flow (MAF) sensor. Initially, the M...
Saturn MAF sensor idle issues
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1996 Ford Taurus Engine Light After Cam Sensor Replacement
1996 Ford Taurus
The owner reports that the check engine light illuminated after replacing both cam sensors on their 1996 Ford Taurus. Despite the replacement, the tro...
Ford Taurus camshaft sensor
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2001 Daewoo Rough Idle After Sitting
2001 Daewoo unknown
The owner reports that their 2001 Daewoo experiences a rough idle after sitting overnight. The vehicle shakes and stutters significantly, occasionally...
Daewoo rough idle fuel system
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2001 Mitsubishi Mirage Evaporator Replacement Guide
2001 Mitsubishi Mirage
The owner is attempting to replace the evaporator in a 2001 Mitsubishi Mirage. They have already removed the airbag, radio, and loosened the dash by f...
Mitsubishi Mirage HVAC
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1996 Acura RL Cruise Control Diagnostic Analysis
1996 Acura RL
The owner reports that the cruise control system on their 1996 Acura RL is inoperative. The issue manifests itself when attempting to engage the cruis...
Acura Cruise Control Electrical Systems
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Blower Motor Not Working Diagnosis
1995 Cadillac El Dorado
The owner of a 1995 Cadillac El Dorado with a V8 engine reports that the front blower motor is not functioning. They have attempted to replace the blo...
blower motor Cadillac El Dorado HVAC system
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Intermittent Rumble Noise from AC Engagement
2004 Chrysler Town and Country
The owner reports a rumbling noise when the air conditioner is engaged, primarily noticeable at idle or low speeds. The noise disappears when the vehi...
Chrysler Town and Country AC noise
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Accessing Rear Spark Plugs on '88 Lincoln Town Car
1988 Lincoln Town Car
The owner wants to perform a tune-up on their 1988 Lincoln Town Car but is uncertain about accessing the rear spark plugs. They have experience with o...
Lincoln Town Car spark plugs
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ECM Replacement and Reprogramming Challenges
extracted_year Lexus extracted_model
The vehicle owner is experiencing multiple issues with their Lexus, ultimately determining that the ECM is faulty. They have acquired a used ECM onlin...
ECM reprogramming Lexus issues
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Low Idle and Stalling After Flooded Streets
2005 Honda Accord
The owner of a 2005 Honda Accord 2.4L reports experiencing low idle at cold start, around 600-700 RPM, which leads to stalling after warming up. The i...
Honda Accord IAC
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2003 BMW Z4 Water Pump Replacement Diagnosis
2003 BMW Z4
The owner of a 2003 BMW Z4 is experiencing engine cooling issues, specifically related to the water pump. They have previously removed the entire cool...
BMW Z4 water pump
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2001 Kia Rio P0172 Error Code Diagnosis
2001 Kia Rio
The owner reports a 2001 Kia Rio LS TOP experiencing a check engine light with error code P0172, indicating a rich fuel condition. Recent repairs incl...
Kia Rio P0172
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