Air Conditioning problem
1998 Chrysler Concorde 6 cyl Front Wheel Drive Automatic 128000 miles
For the last several years, my automatic temperature control has slowly been losing the ability to maintain temperature.
It started with erratic fan speed. With everything working correctly, temp at 73 degrees, all of a sudden the fan would go to full speed and the temp would go full hot or full cold. Sometimes it would only be a temporary problem and then work fine for another few weeks.
Eventually, it became so much of a hassle that I just started using the manual mode for operation.
A few days ago, the fan went immediately to full speed and hasn't responded to any manual attempts to adjust the speed. Even with the system selected to " Off", the fan runs at full speed.
I've had the car to the dealer twice, a general automotive repair shop once, and to two A/C shops. Each time, they say that they can't find anything wrong with the system, meaning that the system is not setting any fault codes.
I've tried the process of resetting the A/C system using the buttons on the temp controller with no luck.
I know that the components of the A/C system are actually controlled by the Body Control Module, with input from the temp controller. I really don't want to just start " shotgunning" the process by replacing parts until I stumble into what is wrong.
Wednesday, October 8th, 2008 AT 3:54 PM