Why are the defrost and heat vents on my 2001 Chrysler Sebring blowing only cold air?
I have a 2001 Chrysler Sebring LX sedan(not convertible). It has about 90,000 miles on it and EVERYTHING works fine. About 2 weeks ago the defrost and heat vents started blowing only cold air. Sometimes it works, but only for 15 minutes at the most. I have not experienced any electrical or mechanical problems with the car other than this. The fans work just fine and I don’t think it is the heater core because I have not had any tell tale signs of a failure there (no moisture inside the car or water on floor of passenger seat). The vents just only blow cold air. I’m looking for a suggestion as to what the most likely cause might be before taking it to the "stealership". Any advise is greatly appreciated.. It’s a great car other than this.
4 Responses
Don H
21 Apr 2010
bigmountainman4
21 Apr 2010
check your thermostat and other heater hoses for kinks
jedi_albee_jon
21 Apr 2010
first, don’t take it to your dealer, find a reputable repair service that does small repairs the likes of only brakes, alignments, radiator, heating and a/c, etc.
second, if you only get cold air chances are the thermostat on or near your water pump is stuck and allowing too much outside air to enter the system.
baldie
21 Apr 2010
it,s probably the thermostat stuck open.
If your temp. Gage is reading normal,& the coolant level in the radiator is at its proper level, you need to check the operation of the heater control valve,( located usually on the inlet heater hose.)
Locate the valve, & remove the vacuum line,inspect the line for damage,then have some one start the car, & move the temp.control from hot to cold. if you feel vacuum on either side, the control valve is bad. If there’s no vacuum, trace the line back to its source, & repair the break.