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Old 02-21-2007, 08:39 AM
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pizzachef pizzachef is offline
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Join Date: Jan 2007
Location: New Cumberland, PA
Posts: 833
Quote:
Originally Posted by Jeremy5848 View Post
The HOT "click" position of the temperature wheel forces the ACC to go to maximum heat. Once out of the "click," the ACC is supposed to modulate the monovalve to reduce the heat to the temp set by the wheel...
I thought this may be how it worked. If that's the case, then the monovalve must be opening and closing as you say, but it would be worth checking. That might be a spring weather job

I can pull the ACC controller pretty easily, I've got the trim off already. Are the problems soldered contacts on the back or inside?

Quote:
Originally Posted by LarryBible View Post
Pull the glove box and make sure that there is a hose in place leading from the passenger side over to the center temp sensor under the little grill on the dash.
So that little grill is a temp sensor and not the buzzer speaker??
I've been looking at that thing wondering what it was. That's easy to check...I'll do that first. What if the hose is/isn't in place?
Thanks,
-Geoff
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1974 240D (1?)52,000 mi - has a new home now
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