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  #1  
Old 06-06-2000, 05:31 PM
ahannay
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On my '87 190D (OM602.911) when the dehumidify button (the one above the AC) is pushed, I get cold air (w/ compressor engaged) from center vents, but hot from outer. With AC button depressed, compressor cuts out after about 45 sec.

I've checked and cleaned feedback potentiometer electrical connnection behind the glovebox, checked the serp belt tensioner, filled up on R134 -- and I'm getting a good used N6 Klima Compressor Control to snap in there. Any other suggestons? TIA

Oh, and thanks to Benzmac for help with vacuum control valve. Changed it today, and for the first time, the tranny shifts SMOOTHLY! Thanks.

Chip Hannay
'87 190D
'84 300D
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  #2  
Old 06-06-2000, 11:12 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
Usually when I see this, it is the potentiometer or a vacuum leak. Be sure.

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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope
1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM
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