HVAC System Fault Analysis Cases
Detailed HVAC system diagnostics including air conditioning failures, heating system problems, and ventilation issues.
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1995 Ford Explorer HVAC Vent Control Issue
1995 Ford Explorer
The owner reports that the air conditioning system in their 1995 Ford Explorer is malfunctioning, as air is blowing out of the window and floor vents ...
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1998 Pontiac Sunfire Blower Motor Diagnostic
1998 Pontiac Sunfire
The owner reports that the blower motor is not forcing air through the vents. They checked the fuse in the driver's door panel and replaced the relay ...
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Ram HVAC Blend Door Actuator Ticking Noise Diagnosis
2010-2020 Dodge Ram
The owner reports a persistent ticking noise when the ignition is turned on, and sometimes even when the key is not in the ignition. They suspect a fa...
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Intermittent Temperature Gauge Fluctuation on Chevy P30
1990 Chevrolet P30
The owner of a 1990 Chevrolet P30 Airstream RV reports intermittent fluctuations in the temperature gauge, rising to about 2/3 but never overheating. ...
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Rear Heater Hose Removal for 1999 Chrysler Town & Country
1999 Chrysler Town & Country
The owner is attempting to remove the heater supply and return tubing for the rear heater on a 1999 Chrysler Town & Country with a 3.8L engine. The tu...
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Heater Not Blowing Warm Air into Cabin
1996 GMC Safari
The owner of a 1996 GMC Safari reports that warm air is not blowing into the passenger compartment. They have already replaced the thermostat and vacu...
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2004 Jeep Wrangler Hardtop Wiring Issue
2004 Jeep Wrangler
The owner recently purchased a hardtop and a Mopar wire kit for their 2004 Jeep Wrangler. After following installation instructions closely, they foun...
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Heat Issue in 1988 BMW 535i - Diagnosis and Repair
1988 BMW 535i
The owner of a 1988 BMW 535i has reported that after finally getting the vehicle started, the heating system does not work and only cool air is being ...
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1996 Honda Civic EJ6 Coolant Loss Diagnostics
1996 Honda Civic
The owner reports that their 1996 Honda Civic EJ6 is losing coolant despite replacing the head gasket, water pump, thermostat, and hoses. A pressure t...
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No Heat in 1984 Oldsmobile Delta 88
1984 Oldsmobile Delta 88
The owner of a 1984 Oldsmobile Delta 88 reports that there is no heat coming from the heater, despite both hoses to the heater core feeling hot. The v...
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Overheating Issue Diagnosis for 1998 Pontiac Sunfire
1998 Pontiac Sunfire
Two days ago, while driving my 1998 Pontiac Sunfire, my girlfriend noticed the temperature gauge rising past the 3/4 mark, indicating the engine was o...
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2001 Dodge Intrepid Cooling System Leak Diagnosis
2001 Dodge Intrepid
The owner reports a very slow leak in the cooling system, specifically around the water outlet with an air bleeder. The leak is causing crusting and d...
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Passenger Side Heater Malfunction Diagnosis
1995 BMW 740iL
The vehicle owner reports that there is no heat coming from the passenger side of their 1995 BMW 740iL. They mentioned that all controls for temperatu...
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2001 Saturn L200 Engine Coolant Leak Diagnosis
2001 Saturn L200
The owner reports a persistent issue with engine coolant leaking onto the passenger side floorboard of their 2001 Saturn L200. The leak occurs randoml...
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2005 Dodge Ram Running Hot and Rough
2005 Dodge Ram
The owner reports that their 2005 Dodge Ram is running hot and rough. The check engine light is on, and AutoZone diagnosed a misfire on cylinder #5. T...
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2008 Dodge Avenger Rear Indicator Bulb Replacement
2008 Dodge Avenger
The vehicle owner is trying to replace the rear indicator bulb on their 2008 Dodge Avenger. They have removed two plastic wing nuts found in the trunk...
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1988 Ford Contour Overheating Diagnosis
1988 Ford Contour
The owner of the 1988 Ford Contour describes persistent overheating issues despite having the cooling fans confirmed as operational. They have already...
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2005 Chevy Trailblazer Blower Motor Cuts Out At Max Setting
2005 Chevrolet Trailblazer
The owner reports that after replacing the blower motor resistor and its connector, the blower motor now cuts out at the maximum setting (5). Initiall...
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