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-   -   89 190D2.5 a/c blows hot and cold (http://www.peachparts.com/shopforum/tech-help/7558-89-190d2-5-c-blows-hot-cold.html)

Rob Daschil 05-20-2000 01:23 AM

When the outside temp is above 80 degrees with the a/c on max blower and at the coldest setting, the center vents blow cold air but the side vents and defroster vents blow hot air. What can done to rectify this situation?

mbdoc 05-20-2000 07:47 AM

Find out why the heater valve isn't getting the vacuum signal from the control valve. Many possibilities.

Benzmac 05-20-2000 10:01 PM

Two things that I am aware of will cause this...One is a vacuum leak (one common source is the vacuum line that goes under the battery tray)
The other thing is the potentiometer that is in the dash.
We sell the service Factory CD repair manual for this. 201 chasis.

------------------
Benzmac:
Donnie Drummonds
1992 500E (very soon I hope :)
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
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MERCEDES SPECIALIST 8 YRS
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