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#1
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1989 300SE Climate Control - Air Blowing Out Of The Defrost With AC On
After consulting the manual I learned that air should not be blowing out of the defrost vents in conjunction with the dash vents with the AC on (Normal mode). Funny thing is, when I move the temp. control to warm, the air stops blowing from the defrost vents, even as the Normal button remains engaged.
Is this a simple fix or an expensive job? Thank you for the advice.
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2004 E320 Wagon 1989 300SE 1998 Range Rover 4.0 SE |
#2
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You need to perform a vacuum diagnostic routine. This will check for vacuum leaks in the system.
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Benzmac: Donnie Drummonds ASE CERTIFIED MASTER AUTO TECHNICIAN MERCEDES SPECIALIST 11 YRS |
#3
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You probably need several if not all of the vacuum actuators replaced. I have only done it myself, never at a shop so I dont know the costs. The parts for the 7 actuators came to aaaaabout $250. A lot of disassembly to get them installed. The rubber diaphrams develop leaks and the system no longer works.
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I got too many cars!! Insurance eats me alive. Dave 78 Corvette Stingray - 3k 82 242 Turbo Volvo - Manual - 270k 86 300e 5 speed manual - 210k 87 420sel - 240k 89 560sl - 78k 91 420sel - 205k 91 560sel - 85k 94 GMC Suburban - 90k 97 Harley Davidson Heritage Softail - 25k 00 GMC Silverado 1 ton 30k |
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