86 535i Heater won't shut off! - Bimmerfest - BMW Forums

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E28 (1982 - 1988)

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Old 02-18-2008, 03:40 PM
sharp sharp is offline
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Location: AZ
Join Date: Feb 2008
Posts: 3
Mein Auto: 1986 535i
86 535i Heater won't shut off!

Any help would be greatly appreciated. I can't get the heater to shut off. It continuously has hot air coming out of the defrost vents on the dash, I can't get it to stop; even if I turn on the a/c full blast and it's blowing out cold air, the hot air still is coming out the defrost vents. Any ideas?
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Old 02-21-2008, 09:34 AM
jimoreno jimoreno is offline
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Location: Parsippany, NJ
Join Date: Jul 2006
Posts: 488
Mein Auto: 2006 X3
Check to see if the plug on the heater valve itself is still connected. I would remove, clean and reconnect. If this doesn't resolve the issue your temperature controller is dead and needs to be replaced.
Jimmy Moreno
1995 530i
1986 535i
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