500SL Air Conditioning 1991 - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 07-21-2006, 09:43 PM Thread Starter
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500SL Air Conditioning 1991

Perhaps someone can offer an opinion on a issue with a 1991 500SL with 91K miles. The A.C. blows very cold but the center dash vents don't blow as strongly as the side dash vents. Is this a vacuum problem, electrical problem and how common is this problem and potential cost to repair. Any info appreciated.

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post #2 of 3 (permalink) Old 07-21-2006, 10:00 PM
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Vehicle: 1985 500SEC, 1991 190E 2.6.
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Sounds like a issue with the vacuum actuators behind the dash, a rip in the lines, or the easy to access cental unit under the passenger side dash. Sometimes you can hear air escaping. I am not sure whether the oline manual mbbraingears.com has anything relating to your car, but the vent system of some of the others listed should be similar. It might be a good idea to repost on the forum for your car (I think it's the R-129 forum you need to scroll down to), and also use their 'search this forum' function on the top right of the page.

Last edited by Teutone; 07-21-2006 at 10:06 PM.
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post #3 of 3 (permalink) Old 07-21-2006, 10:20 PM Thread Starter
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Thanks Teutone. and I'll check out the R-129 forum.

Doug 64
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