HVAC System Fault Analysis Cases
Detailed HVAC system diagnostics including air conditioning failures, heating system problems, and ventilation issues.
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1996 Ford Escort Electric Fan Not Working
1996 Ford Escort
The owner reports that the electric cooling fan on their 1996 Ford Escort LX 1.9L is not functioning, leading to engine overheating issues. Previous r...
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2000 Lincoln LS Severe Coolant Leak Diagnosis
2000 Lincoln LS
The owner of the 2000 Lincoln LS reports a severe coolant leak causing the car to overheat quickly, only being able to drive half a mile before requir...
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Cooling Fan Delay Issue in 1991 Honda Accord
1991 Honda Accord
The owner reports that the cooling fans in their 1991 Honda Accord are functioning but engage too late when the engine is running. The fans do eventua...
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1994 Dodge Shadow Overheating Diagnosis
1994 Dodge Shadow
The owner of a 1994 Dodge Shadow with a 2.5L engine reports intermittent overheating issues that have persisted for about three years. The problem occ...
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1993 Honda Prelude Cooling Fan Diagnosis
1992-1993 Honda Prelude
The owner reports that the radiator cooling fan is continuously running, regardless of whether the air conditioning or heater is in use. The fan remai...
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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...
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2004 Chevy Tahoe 4WD Actuator Diagnostic
2004 Chevrolet Tahoe
The owner reports intermittent 'service 4WD' light activation on their 2004 Chevy Tahoe. The 4WD system sometimes works, but often it won’t engage whe...
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2005 Chevy Trailblazer Rear Heater Diagnostic
2005 Chevy Trailblazer
The owner reports that the rear heater vents in their 2005 Chevy Trailblazer only blow cold air, while the front heater system works correctly. The en...
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1999 Chevy Monte Carlo HVAC Flow Intermittent Issue
1999 Chevrolet Monte Carlo
The owner of a 1999 Chevy Monte Carlo reports intermittent airflow issues from the vents. At times, the airflow diminishes significantly, but it will ...
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1998 Oldsmobile Intrigue Overheating and Cold Air Issue
1998 Oldsmobile Intrigue
The owner of a 1998 Oldsmobile Intrigue reports that the vehicle blows cold air when the heater is on and also experiences overheating. They have rece...
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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...
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Heater/AC Fan Not Working Diagnosis
2005 Dodge Dakota
The owner reports that the heater and AC fan in their 2005 Dodge Dakota suddenly stopped working after refueling. Prior to this incident, the fan was ...
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2000 Mitsubishi Montero Overheating Diagnosis
2000 Mitsubishi Montero
The owner reports that their 2000 Mitsubishi Montero is overheating despite having replaced the thermostat and fan clutch. They attempted to bleed the...
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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...
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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...
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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...
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1983 Mercedes Benz 300td Inconsistent Cooling Issue
1983 Mercedes Benz 300td
The owner reports that the air conditioning (AC) system in their 1983 Mercedes Benz 300td is inconsistent. The AC blows cold air when the auxiliary fa...
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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...
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Page 5 of 9 - Showing automotive fault analysis cases