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Old 07-28-2008, 04:03 PM
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420 sel climate control

ok my climate ac/heat kicks on by it self wanna know if its the control unit or the relay and if its the relay where is it located thanks joe

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Old 07-28-2008, 04:41 PM
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this problem is sometimes caused by cracked solder joints in the Climate Contril Unit

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Old 07-28-2008, 04:45 PM
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how do you fix it
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Old 07-29-2008, 01:04 PM
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Posts: 242
hello joe, it is quite unreliable to repair as the trouble will come in and out, best is to replace or look for a good working surplus.
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Old 07-29-2008, 02:11 PM
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Join Date: Sep 2006
Posts: 1,148
I am going to the junkyard soon and I know there are plenty of used units out there if you want me to check on the price for you if there is not a junkyard near you.

1984 300SD Orient Red/ Palomino
1989 560SEC
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