Duo Valve or ??

[muzzere320]

I recently cleaned up the duo valve on my car as per Parrot's guide. The temperature control on the drivers side has never been as sensitve an the passenger one but now it's started pushing out hot air on the drivers side as the car warms up and cold/chilled air on the passenger side. After 5 or 6 miles the Driver side cools down but is never a cold as the passenger side.

Is this likely to be the duovalve or something else if the something else what is/are the likely culprit(s)?

Cheers

 

[42864]

Could your problem be linked to mine ?? I have a S Class 140 series and the heaters do not work as they should, I replaced the Duo Valve on mine, this did not cure the problem I was then told that it Might be the Temperature sensors not working properly, -- These are the sensors that are in the footwells NOT the one overhead by the curtosy light, -- I then read a posting by Television regarding Reseting the Climate Control on the later models (220's) and have aked him if this applies to the 140 Series S Class,, am still awaiting his reply. I hope that this may be of assistance to you.

 

[42864]

Further to previous posting the Sensors that I refer to that are situated in the footwell cost about £13-00 each and the part No's are: A 124 830 03 72.

 

[Parrot of Doom]

Try reading these threads, they may help. Remember they're a US forum so LHD:

http://www.mercedesshop.com/shopforum/showthread.php?t=132825&highlight=low+refrigerant+heater

http://www.mercedesshop.com/shopforum/showthread.php?t=152301&highlight=low+refrigerant+heater

http://www.mercedesshop.com/shopforum/showthread.php?t=131059&highlight=low+refrigerant+heater

http://www.mercedesshop.com/shopforum/showthread.php?t=125710&highlight=low+refrigerant+heater