My heater/AC fan wont shut off
06-17-2007, 12:17 PM
#1
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Thread Starter
Join Date: 03-28-2007
Location: Mount Airy, Md.
Posts: 39
My heater/AC fan wont shut off
My fan control has four click positions but only two speeds. The first three positions are low and the last position is high. It wont turn off completely. Has anyone else encountered this? I am taking it to the dealership next week to see whats up.
06-17-2007, 03:24 PM
#4
Member
Join Date: 05-09-2006
Location: Missouri
Posts: 86
I had a similar problem last fall. I could not turn the fan off or it would turn on by itself. The dealer found a fried resistor and replaced, but after I picked it up and took it home I found that it still did it. I took it back in and they could not find anything else wrong. They attributed it to the afterblow feature possibly being turned on, which I found given the use and outside temp that it could not have been that. I was going to take it back in, but then it quit doing it and has worked fine since.
06-17-2007, 03:29 PM
#6
Senior Member
Join Date: 04-30-2006
Location: Maryland Heights, MO
Posts: 9,149
I had a similar problem last fall. I could not turn the fan off or it would turn on by itself. The dealer found a fried resistor and replaced, but after I picked it up and took it home I found that it still did it. I took it back in and they could not find anything else wrong. They attributed it to the afterblow feature possibly being turned on, which I found given the use and outside temp that it could not have been that. I was going to take it back in, but then it quit doing it and has worked fine since.
and now back to our regularly scheduled thread.............
06-17-2007, 03:40 PM
#7
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Join Date: 05-09-2006
Location: Missouri
Posts: 86
Afterblow is by default off. It comes on after the car is turned off to dry up moisture in the system when the AC has been used and it is at least 70 degrees outside. I found all this out after they told me this was the cause. All I know is that I wasn't using AC in November and it wasn't 70 degrees.
06-17-2007, 11:42 PM
#9
Member
Join Date: 05-09-2006
Location: Missouri
Posts: 86
The afterblow feature comes from the factory off, so unless you had it turned on your car won't do it. I was told it may have been activated when they worked on it the first time--then I found out how the feature actually worked.
06-17-2007, 11:58 PM
#10
Senior Member
Join Date: 06-18-2006
Location: Hillcrest, San Diego, CA
Posts: 839
That sounds like a lot of smoke up someone's A$$