I have had a clicking noise for some time when the A/C turned on. It felt like it was coming from low on the dash under the steering column. It would stop after a while, but start when I change the temp. Some times I would get heat for a while then the cold air would start in.
Today I find I have cold air and can't get the heat on. A friend told me the clicking was most likely a plastic gear turning which made the clicking noise. I also now have no more clicking just cold air. Is the door stuck in one direction or is it something else?
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It turned out to be a blend door actuator which I bought at the dealer for about $40. Easy fix once I figured out what was wrong. There are several actuators on the left of the dash, one controls the flow of air between the various vents defrost, floor, panel, etc and the other controls the exchange between heat and cold. Once you figure out which one is broken, get on your knees and remove the metal kick panel under the steering wheel. Then get a flashlight and look past the gas petal under the dash and you will see one. The first on my 2006 magnum control air flow. I had to remove it to get at the other one right behind it. Only took 45 minutes at a total cost of $40. The dealer wanted $500 and a local garage $350.
It comes on only when I try to adjust the temp control. It started intermittent and now is constant as soon as the temp is changed and will not stop until the ignition is turned off.
Intermittent issues can sometimes be difficult to diagnose. In this case, with a noise that can now be produced on command, your dealer will be able to pinpoint the root cause efficiently and let you know whats necessary to correct it.
Top Care Specialist