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Old 07-22-2004, 07:26 PM
Registered User
Join Date: Sep 2001
Location: ga
Posts: 261
AC or climate control problems

It's really hot and the last couple of days I have had a problem with the AC on my 87 300D--AC blows cold but intermittently the blower with stop working. The blower motor was replaced last year. I can push the climate control buttons and eventually the blower will begin to work again and may not stop for some time then again it may only run for a few minutes before it stops again. I have checked the fuses and they are okay(fuse block and 25Amp outside the fuse block) Could this be the selector control panel of buttons that is failing?
thanks Joel /Atl
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Old 07-22-2004, 07:32 PM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Probably the blower regulator. Easy to diagnose at the three wire connector near the brake booster. Check the archives for details but basically you will have access to the power cable for checking supply voltage and the control signal 1-6v from the pushbutton controller on the yellow wire.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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Old 07-22-2004, 11:52 PM
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Join Date: Jun 1999
Location: Surrey, Beautiful British Columbia, Canada
Posts: 750
you would hope it is not the regulator $$$ and the labor $$

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