PeachParts Mercedes-Benz Forum - View Single Post - Why does my heat only work while sitting still?

rcounts · #17 11-26-2008, 04:42 PM

Quote:

Originally Posted by SD Blue

I believe another simpler solution would be removing the "innards" of the monovalve. The only drawback is no control over heat and you may need to open windows.

DAMN you guys are GOOD! That was going to be my next question! I thought of that as a possible temprorary solution last night after I went to bed! If I did this, wouldn't I still be able to control the heat by turning the fan switch to high/low/off? No way to change the temperature of the air output, but if I can turn the heat to high/low/off, that will do for our trip tomorrow.

Quote:

Originally Posted by kerry

I believe unplugging the monovalve gives full heat. It closes when it gets power I think.
However, if the diaphragm is torn, unplugging it does not always assure full heat.

That's an easy one to test - I can just unplug it before I head home from work tonight and see what it does. If that doesn't do the trick (temporarily) then I'll pull the innards out tomorrow morning.

BTW, I did an eBay search on "Mercedes monovalve" and only got one hit for a rebuild kit - for 56 bucks!