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03 buick lesabre ac blowing hot air on the driver side
Ok, I have a 03 Buick LeSabre ac blowing hot air on the driver side I should say blowing hotter air on the driver's side the temps are about 100 degrees on the driver side and between 65-70 in the middle vent and about 70 - 71 degrees passengers side.
I checked the system with my gauge set and the system is working fine I did not get any indication that the system was low or malfunctioning in any way.
When and if I get the car back I'll check for leaks just to be sure.
Thank you for any help
On nearly all modern cars the heating is regulated by mixing hot and cold air, the heater radiator matrix runs continuously. It sounds very much like one the blend flaps that control the mixing of hot and cool is stuck in the fully hot position. I don't know your vehicle but on cars with manual heating controls old style mechanical push-pull "Bowden" cables, while cars with climate control have either electrical or vacuum acctuators.
Quite often this type of problem cam be simply down to a mechanical linkage or cable becoming detached.
Added -- on checking the blend door actuator comes on a lot of searches on this model and year.
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Last edit: 8 years 4 months ago by Andy.MacFadyen.
A quick way to know if you have a temperature air door/actuator issue is to pinch off the heater hoses to the heater core. If you start to get cooler air from the vent then you have some direction.
"Silver bullets are for killing Werewolves, not fixing Cars." -Rob Longoria-
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