Mfts-premature failure-again and again

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  • bertman
    S2Forum Extremist
    • Apr 2007
    • 1173
    • Current: United Kingdom

    #1

    Mfts-premature failure-again and again

    In the past year alone I must have changed this little ******* about 3-4 times.The last one I changed just this evening after spending a whole evening last night changing out the thermostat and bleeding the system because it was suddenly getting very hot very quickly.
    It was worth doing and removing the pas pump because the one small pipe i had not replace was fooked
    After chucking the old thermostat into a pan of water and bringing to the boil it opened up bang on cue.So then onto bleeding the cooling system which i did very thoroughly.Still the temp gauge was all over the place,and this was with a brand new behr one which seem to give alot better readings than the rubbish meyle ones.
    So chucked in a new one and hey blooming presto-perfect temps
    So the question is whats going on?The last 2 or 3 I changed because the boost went dead but this one was a batch of 3 new ones I bought.
    This was only 3-4 months old if that,and i will be sending it back for a replacement
    Is it that they are all really badly made nowadays?.It is quite worrying when you see your gauge doing things it is not supposed too.
    Or can something on the car cause them to fail early,which tbh i doubt
    Rob

    Ragussa green avant RS2+ spec
    Racing blue Octavia VRS mk2 estate-Remapped now to 250 bhp
    Audi coupe gt-slow as hell but loads of character-sold
  • newsh
    S2Forum Obsessed
    • Aug 2003
    • 16226
    • Country: United Kingdom

    #2
    Same thing on the purple avant, brand new a few months ago, then the warning symbol comes up for overheating After pulling the connector off and checking the wiring (no mean feat in itself) I managed to fix it by the banging with a hammer and socket extension trick. If I didn't know this trick I'd be buying another new one too.
    Temps seem to be ok so far touch wood...

    S2 Coupe 3B Project


    Ur quattro restoration

    S2 Avant

    Boost is the new rock and roll!
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    • bertman
      S2Forum Extremist
      • Apr 2007
      • 1173
      • Current: United Kingdom

      #3
      Havent tried the hammer thing yet john,maybe my 12 bore might work just as well
      Rob

      Ragussa green avant RS2+ spec
      Racing blue Octavia VRS mk2 estate-Remapped now to 250 bhp
      Audi coupe gt-slow as hell but loads of character-sold

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      • newsh
        S2Forum Obsessed
        • Aug 2003
        • 16226
        • Country: United Kingdom

        #4
        Have you replaced the connector pins (or properly cleaned them)? Temp gauge can mess about if these are dirty, like the MAF connector does..

        Hammer trick works for the Flashing warning symbol

        S2 Coupe 3B Project


        Ur quattro restoration

        S2 Avant

        Boost is the new rock and roll!
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        • newsh
          S2Forum Obsessed
          • Aug 2003
          • 16226
          • Country: United Kingdom

          #5
          BTW, sorry, got your message, I've been trying to contact Pete too! Will try again tomorrow.

          S2 Coupe 3B Project


          Ur quattro restoration

          S2 Avant

          Boost is the new rock and roll!
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          • andyg plym
            S2Forum Freak
            • Nov 2006
            • 4646
            • Country: England

            #6
            Has any water from the rail got on the contacts ? Btdt

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            • bertman
              S2Forum Extremist
              • Apr 2007
              • 1173
              • Current: United Kingdom

              #7
              maybe Andy,when your trying for a quick swap over ther is always a bit of water that gets in contact with the connector.I will clean up the connectors and put the old mfts back to see if it behaves itself-soon
              Rob

              Ragussa green avant RS2+ spec
              Racing blue Octavia VRS mk2 estate-Remapped now to 250 bhp
              Audi coupe gt-slow as hell but loads of character-sold

              Comment

              • newsh
                S2Forum Obsessed
                • Aug 2003
                • 16226
                • Country: United Kingdom

                #8
                The rubber boot on mine had a mixture of water and WD I think.. I've left it off to dry out.

                S2 Coupe 3B Project


                Ur quattro restoration

                S2 Avant

                Boost is the new rock and roll!
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