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Partially blocked heater matrix ?

Discussion in 'Electrics, Vacuum, Ignition and ECU' started by streaker, Nov 27, 2012.

  1. streaker

    streaker Active Member

    Likes Received:
    Nov 4, 2012
    Your Mercedes:
    C220 Estate 2004 2.2 Diesel

    I posted a couple of weeks ago re my poor heating problem
    Steve@Avantgarde suggested back flushing the matrix, I've got the car in with
    MB motorcare (MB Indy) in Ellesmere port for various issues and they have confirmed there is restricted flow through the matrix but fairly free when reverse flowing, however no debris has come out even under quite high flow,

    I recently changed the coolant and I'm sure from the state of the old stuff it was the original coolant

    the heating has been fine at motorway speeds but below 55mph it cools down to barely warm, the engine coolant temp gets up to 90c within 5miles

    Is it ok to connect up the matrix in reverse ? and put some de scaler in the coolant

    many thanks


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