1996 c250 heater not working

snodge182

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Your Mercedes
C250/1996/2.5L Turbodiesel
Hi,
First of all I'm new to mercedes benz forums. I have a 1996 blue c250 turbodiesel which up until recently has been fine.
The problem is that when I turn up the dials for hot air, there is only cold air still coming through. I have spoken to a mercedes benz dealer and they said (although I can't remember clearly) there is a mushroom shaped thing under the bonnet which has likely gone wrong. I have no idea what I'm looking for so maybe someone could point me in the right direction?
Also, probably completely unrelated but occasionally when I first turn on the blowers, they don't come on sometimes until I'm actually accelerating... it's like I bumpstart the fans into action by pushing air through the vents by acceleration. Could it be related to the other problem or is it another issue?
Regards, George
 

television

Always remembered RIP
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Your Mercedes
2002 SL500, 216 CL500, all fully loaded
You have a duo valve under the bonnet that could have failed,, is it the same temp from both sides.

The carbon brushes on the fan are either stuck or worn out, and yes the incoming air can start it when like this, you can drop the fan and get new brushes on Ebay
 
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S

snodge182

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C250/1996/2.5L Turbodiesel
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Yep the temperature is the same from both sides, what is this duo valve and how can I recognise it?

Also, thanks for the information, I shall probably seek one off ebay as you say
 

bigasotonuk

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Southampton UK
Your Mercedes
C43/55 AMG 1999 / C230K 1997

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