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Climate Control , before I by Duovalve

1829 Views 7 Replies 7 Participants Last post by  lilbee45
I know this was talked about, but I just want to make sure once more before I change this part.

Heat works good through all settings, but sometimes goes crazy and starts blowing very hot air even at low TEMP setting, unless I press the COOL outside air button and then only center vents will do so.

When uing AC, Most of the times only the center vents blow cool, Defroster most always blows HOT and sides vents have a mind of their own, forcing me to only use center vents, meaning using a defroster in summer will sucks ass.

Sounds like an air distribution problem. Is it the DuoValve or the flaps not engaging properly.


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asodergren said:
I have a 1994 S320 doing the exact same thing. Has anyone ever figured out the cure?
i leave the blower at AUTO and temp at 72* all year long, mine attempts to fry my GF alive everynow and then as well... but thats only during the winter... havent had the problem since it got warm enough to start the AC on 72* and auto setting.
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