1997 Lincoln Town Car Signature, 145,000 miles, 4.6.
Last summer I had my A/C recharged and checked, and it worked fine for 3 or 4 months, and then the A/C stopped working and it would only blow heat, which I am unable to regulate. It blows straight heat, I can adjust the fan speed, but not the actual temperature. When I press the vent, defrost, outside temp, buttons it will only blow heat.
Sometimes when my control unit is off, heat will still blow from the floor vents.
I had the AC checked and everything appeared fine, they recommended I replace the cycle switch, which I did. I eventually replaced the HVAC unit, which also did not fix the problem.
I have been told that my " blower is stuck open" but if that were the case, why does it not blow cold air when I turn the AC on?
Is that the correct diagnosis? Or what do you think it would most likely be?
Sunday, April 22nd, 2007 AT 3:37 PM