Air Conditioning Problems Analysis Cases

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

1999 Lincoln Continental Fuel System Not Activating
1999 Lincoln Continental
The owner turned off the vehicle in the driveway, and it will not start. There are no diagnostic trouble codes (DTCs) present. The fuel pressure to th...
Lincoln fuel system PCM
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2000 Toyota 4Runner Running Rough After Sensor Replacement
2000 Toyota 4Runner
The owner reports that their 2000 Toyota 4Runner with a 3.4L V6 engine is running rough, especially when warmed up. The check engine light was on, and...
Toyota 4Runner running rough
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Fuel Pump Relay Switch Diagnosis
1988 Acura Legend
The owner of a 1988 Acura Legend with a 2.7L V6 engine is experiencing issues with their fuel pump relay switch. They are seeking the location of the ...
Acura fuel pump relay PGM-FI relay
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Diagnosing Overheating Issues in 1997 Acura Integra
1997 Acura Integra
The owner of a 1997 Acura Integra reports overheating issues despite having replaced the thermostat in August 2010. Recently, they observed coolant ci...
thermostat overheating cooling_system
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2009 Pontiac G6 Stereo Wattage Inquiry
2009 Pontiac G6
The owner of a 2009 Pontiac G6 is curious about the wattage output of the stock 6-disc changer, particularly if it’s worth keeping the stock system or...
Pontiac G6 audio system
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1999 Honda Accord AC Delay and Non-Engagement Issues
1999 Honda Accord
The owner reports that the air conditioning system in their 1999 Honda Accord takes 10-15 minutes to start blowing cool air and sometimes does not eng...
Honda AC system compressor engagement
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2007 Pontiac Grand Prix Power Steering Issues
2007 Pontiac Grand Prix
The owner reports a fluid leak related to the power steering system. After a full flush and repairs, the steering remains tight without acceleration, ...
power_steering whine tight_steering
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1996 Buick Riviera Coolant Leak Diagnosis
1996 Buick Riviera
The owner reports a coolant leak from the underside of their 1996 Buick Riviera, specifically near the crossmember on the right side. Upon inspection ...
Buick Riviera coolant leak
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Diagnosing Coolant Leak from Engine Block Freeze Plug
1999 Ford Explorer
The vehicle owner reports a small coolant leak on the right side of the engine, visible through the wheel well. They note a round indentation on the l...
Ford Explorer coolant leak
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2000 Ford Contour Rough Idle and Stalling Diagnosis
2000 Ford Contour
The owner reports that their 2000 Ford Contour with a 2.0L engine is experiencing rough idling, especially when the A/C is on, and it stalls under ful...
Ford Contour Rough Idle
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1996 Acura TL Engine Compression Failure Diagnosis
1996 Acura TL
The owner of a 1996 Acura TL reports a serious engine issue, stating that there is no compression in the engine. They have noted that the vehicle was ...
Acura engine compression
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Fuel Pump Replacement Issue Diagnosis
1981 Dodge Diplomat
The owner of a 1981 Dodge Diplomat reports that the vehicle will not start unless gasoline is poured directly into the carburetor. After checking the ...
Dodge Diplomat fuel pump
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1998 Honda Accord Check Engine Light Diagnosis
1998 Honda Accord
The owner of a 1998 Honda Accord reports that the check engine light is illuminated. After a recent starter replacement, they suspect a vacuum line ma...
Honda Accord check engine light
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1998 Saturn SL1 Accelerator Issue Diagnosis
1998 Saturn SL1
The vehicle owner reports an issue with their 1998 Saturn SL1 where the accelerator seems unresponsive. They’ve noticed irregular idle behavior, and s...
Saturn SL1 throttle
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1998 Cadillac Catera Heater Issue Diagnosis
1998 Cadillac Catera
The owner of a 1998 Cadillac Catera is frustrated after spending $3,800 on repairs, only to find that the heater is not working. The technician claims...
Cadillac Catera heater issue
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Clunking Noise on Hard Acceleration in 2003 Honda Accord
2003 Honda Accord
The owner reports a clunking or crackling noise coming from the driver's side, particularly when turning right and during hard acceleration. The noise...
suspension clunking noise subframe
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Clutch Pedal Issues on 1991 Honda Accord LX
1991 Honda Accord
The owner reports that the clutch pedal on their 1991 Honda Accord LX works fine when pressed hard and fast. However, when pressed slowly, the pedal f...
clutch hydraulic_system failure_analysis
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Cadillac Vibrates at Idle and Stops
unknown Cadillac unknown
The owner reports that their Cadillac vibrates significantly when in idle or stopped positions, especially after the vehicle has been running for a wh...
Cadillac vibration idle
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