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Old 11-30-2007, 08:16 PM
crit1 crit1 is offline
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Join Date: Sep 2005
Location: Bethany, Ct.
Posts: 68
C280 Climate control vacuum leak?

I have a 1995 C280. When I start the car, there is what sounds like a hissing/vacuum leak under the passenger dashboard. The sound goes away when I turn on the heat, but I can make it come back on by either shutting off the heat or by initiating the recycling air feature (turns off the air coming in from the outside). Is it a vacuum leak and if so, where should the line be to reattach it? Thanks.
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