I had the bad luck of purchasing a 95 E300D that had the green peace glow plug wiring harness. I replaced the harness and now the AC comes out of the defroster and side vents. Does anyone have any idea if I crossed a vacuum hose or did the control switch module go out?

Thanks!

You must have vacuum to the a/c vacuum valve inside the car...

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I will check that out tonight.

you need vacuum to the center vents...but not to the defrost and sides..?

i have lost center vent a/c.... it could be pods... but i have to admit when i re-did my a-c... the manifold that contains 4 vacuum lines has one line missing... i plugged the manifold up with a screw...but can't find the stupid plastic line...

i wonder if that's the one that goes to the center vents... i am waiting until my son comes home from school sometime to trace his against mine..

any other thoughts would be welcome. not that big of a deal right now... except a lot of A/c is going to the defrost...

if its pods... i have 3 or 4 of them...but just don't have the rest or the time to take apart the dash... i have to do valve stem seals first...

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1989 300ce 129k
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1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus

1994 e320 Cabriolet 108k



1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it


[/SIGPIC]

I verified that it is a vacuum problem and now all I have to do is figure out where the problem is.

Thanks for all of you who provided advice!