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Old 08-06-2005, 05:12 PM
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Join Date: Oct 2003
Location: Cape Cod
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Defrost Flap

The defrost flap being open is causing condensation on my windshield with the a/c on. Very annoying when traveling at night. All other functions are normal. Any thoughts??? BTW, the r-134 retro works well. Solved my a/c belt problem by using a Contitech belt.


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1985 300cd
1983 300d...aka "The Yummymummymobile"....Wifes ride
2006 Wesmac 38' Sportfisherman, Single DDC/MTU 12V-2000 1500 hp
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Old 08-06-2005, 05:20 PM
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Join Date: Jun 2000
Location: SF Bay Area
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Check the defrost flap vacuum actuator. See if both chambers hold vacuum. If the acutator is good, see how much vacuum is available at the hoses when the flap should be fully closed. You can get to the actuator in a W126 by removing the glove box. I don't know about a W123.

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