G
goesman
Guest
I have a 1997 Buick Lesabre (Custom) and began experiencing problems with the heater/AC. Even in the off position, hot air blows out of the vents.When I hit the A/C button, I can tell the A/C compressor kicks on, but hot air continues to blow out of the vents.
I replaced the heater/AC control unit with a used one I purchased at a local junk yard. It help things a bit in that the hot air is no longer continuously blowing out of the vents. The levers controlling the air tmp don't seem to do anything (like before I replaced the unit). Hitting the A/C button turns the compressor on ( I know it's working because the pipe near condensor is realy cold), but hot air still blows out the vents.
Someone else suggested the problem might be heater control valve (connected to one of the two hoses that comes off of the heater core) under the hood might have gone bad.
Does this sound right? Any other suggestions if not? Thanks in advance.
I replaced the heater/AC control unit with a used one I purchased at a local junk yard. It help things a bit in that the hot air is no longer continuously blowing out of the vents. The levers controlling the air tmp don't seem to do anything (like before I replaced the unit). Hitting the A/C button turns the compressor on ( I know it's working because the pipe near condensor is realy cold), but hot air still blows out the vents.
Someone else suggested the problem might be heater control valve (connected to one of the two hoses that comes off of the heater core) under the hood might have gone bad.
Does this sound right? Any other suggestions if not? Thanks in advance.