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W124 Permanent cold air through vents

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by Waft, Nov 23, 2012.

  1. Waft

    Waft Senior Member

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    Joined:
    Apr 5, 2012
    Location:
    Cambridgeshire
    Your Mercedes:
    1993 E220 Sportline Coupe
    Hi

    Since purchase,my W124,no matter what setting on the rotary control,will only blow cold air through the air vents.

    This includes with the air vent controls in the closed position!!:shock:

    Otherwise,its happy to blow hot air anywhere I direct it.
    I'm also not sure if the heat it blows on my feet should be quite as hot as it is!For example,I have it set to say 18 degrees only and after a couple of miles my trousers are hot to the touch!!:Oops:

    Can anyone help??

    TIA

    Steve:)
     
  2. mikestrivens

    mikestrivens Senior Member

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    Joined:
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    Location:
    Stockport
    Your Mercedes:
    1995 W124 320TE, 1998 R129 SL500, 2016 Triumph Tiger 800 XCx
    Sounds like the vent controls have become disconnected. The centre vents only ever allow cold air through on the W124.
     
  3. OP
    Waft

    Waft Senior Member

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    Joined:
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    Location:
    Cambridgeshire
    Your Mercedes:
    1993 E220 Sportline Coupe
    .

    It has had an interior swap Mike.I can believe it.

    I'll take off the trim and check it ooooot!

    Thanks

    Steve:)
     
  4. kth286

    kth286 Senior Member

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    Joined:
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    Your Mercedes:
    E320 Coupe 95
    when the duo valve fails, it normally fails in the hot position, hence nil adjustment of temp.
     
  5. OP
    Waft

    Waft Senior Member

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    Location:
    Cambridgeshire
    Your Mercedes:
    1993 E220 Sportline Coupe
    .

    Thanks David.

    I found the site showing how to overhaul the Duo Valve.

    I'll strip down,lube and reassemble.Hopefully just a stuck valve or two!

    Steve;)
     

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