Air Conditioning Problems Analysis Cases

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

1995 Lincoln Town Car Fan Speed Diagnostic
1995 Lincoln Town Car
The owner reports that the fan speed in their 1995 Lincoln Town Car only operates at high speed, regardless of the automatic temperature control or ma...
Lincoln Town Car fan speed
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AC Compressor and Cooling Fan Issues
1997 Pontiac Grand Prix GT
The owner of a 1997 Pontiac Grand Prix GT with 143,000 miles reports that the engine temperature gauge climbs to 220°F when stopped, prompting them to...
Pontiac Grand Prix Cooling System
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Air Only Blows Out of Defrost Vents
2000 Ford Excursion
The owner of a 2000 Ford Excursion with 38,000 miles reports that after parking the vehicle for winter, the air only blows out of the defrost vents in...
HVAC vacuum system actuator failure
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2006 Toyota Tundra Gauge Cluster Backlight Issues
2006 Toyota Tundra
The gauge cluster backlight and A/C knob lights on my 2006 Toyota Tundra are completely out. I tried adjusting the dimmer switch and checking the fuse...
Toyota Tundra gauge cluster
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Intermittent A/C Issue in 2007 Volvo S40
2007 Volvo S40
The owner reports that the A/C in their 2007 Volvo S40 works intermittently, stopping unexpectedly. They have performed all basic A/C services, indica...
Volvo S40 A/C issues
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2005 Toyota Corolla A/C Blows Warm at Idle
2005 Toyota Corolla
The owner reports that the air conditioning system in their 2005 Toyota Corolla functions properly while driving but begins to blow warm air when comi...
A/C System Refrigerant Level Cooling Fan
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2007 Dodge Ram RPM Fluctuation with AC On
2007 Dodge Ram
The owner of a 2007 Dodge Ram with a 5.7L Hemi engine reports that when the AC is turned on, the RPMs fluctuate by about 200 RPM, oscillating up and d...
Dodge Ram RPM Fluctuation
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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...
blower motor HVAC system relay issues
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Page 6 of 6 - Showing specific automotive problem analysis cases