duo

Duo valve problems (Please excuse but this I posted in error initially to "Favourites" thread) Hi all, I have heating problems that I suspect it may be duo valve problems on my 1995 124 E300 diesel. This model does not have the air-conditioning. Contrary to most of the other threads that I...

Need to replace my W202 duo valve and not intent on dealership prices. I see Euro car parts do one for £88+VAT. Has anybody tried it ? Is it OEM, does it work ok and is it any good ?

Hello, i would like to know if its normal to have some noise coming from the Duo Valve while the A/C is on. In my car i cant get hot air blowing into the cabin, just very cold always. I read so many problems about duo valves, but usually is the opposite, people only get hot instead of cold...

Are these little devices supposed to be either on or off or, do they gradually open/close as the individual temperatures reach that which is set on the dash?. One of mine is cyclically opening and closing about once every second or so and its doing it with a very pronounced and audible...