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  • No speedo..

    Right, speedo was erratic for a while,either not working for the first mile or so or leaping up to 100mph for no good reason, but now it's dead. I have changed the speed sensor on the transfer box, and that didn't help. The O/D off light flashes some of the time. the gear changes are normal, so the ECU must be getting a signal from somewhere. Why it no worky?
    it's in me shed, mate.

  • #2
    Originally posted by Chillitt View Post
    Right, speedo was erratic for a while,either not working for the first mile or so or leaping up to 100mph for no good reason, but now it's dead. I have changed the speed sensor on the transfer box, and that didn't help. The O/D off light flashes some of the time. the gear changes are normal, so the ECU must be getting a signal from somewhere. Why it no worky?
    Which sensor did you change, the one with the plastic drive wheel on the end?
    If yes, try (or remove and clean) a different magnetic sensor, (the other one on the T/case which is a two wire sensor) it's a kind of speed/back-up sensor for the ECU.

    See page 6 here, http://www.autoshop101.com/forms/h36.pdf
    Last edited by BUSHWHACKER; 26 May 2010, 22:00.

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    • #3
      It was the one with the plastic wheel I changed. Will go have a delve again when its lighter..
      it's in me shed, mate.

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      • #4
        if you have no speed sensor fault codes, its normally a duff khp-mph converter chip. (unless you just have the dash face changed, lol then its the speedo)
        4x4toys.co.uk - Keeping you on and off the road...

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        • #5
          Originally posted by TonyN View Post
          if you have no speed sensor fault codes, its normally a duff khp-mph converter chip. (unless you just have the dash face changed, lol then its the speedo)
          No,no,no. I wanted an answer that doesn't involve taking the dash apart...

          I am assuming I will only get error codes while the O/D off light is flashing, it only does that while I'm moving and then only intermittently.. Could be tricky to get the fault codes..
          it's in me shed, mate.

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          • #6
            nah its easy, same as engine fault codes, bridge TE1 and E1, then turn ignition on.

            then turn O/D off and count the O/D light flashes
            4x4toys.co.uk - Keeping you on and off the road...

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            • #7
              Originally posted by TonyN View Post
              nah its easy, same as engine fault codes, bridge TE1 and E1, then turn ignition on.

              then turn O/D off and count the O/D light flashes
              Ah, OK I will do that then. I was having trouble finding a volunteer to sit on the engine till the OD light flashed...
              it's in me shed, mate.

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              • #8
                Originally posted by TonyN View Post
                nah its easy, same as engine fault codes, bridge TE1 and E1, then turn ignition on.

                then turn O/D off and count the O/D light flashes
                Done that, O/D light does not flash... That will be me taking the dash apart then.
                it's in me shed, mate.

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                • #9
                  Had the dash apart today, removed the speedo healer, and still no speedo... Bother... anyone want to swap my spare 2.4 clocks for a set of 3.0 clocks?



                  Wasn't a complete waste of time - I have finally got remote locking working!!!
                  it's in me shed, mate.

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                  • #10
                    One other area to check while you have the clocks out:
                    Remove the screws that hold the speedo assembly to the housing and lift it out, then inspect the circuit board on the back for any breakages or burnt tracks.

                    Great news on the central locking, is that the project you had nailed to a board when I came to visit all those years ago?

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                    • #11
                      Originally posted by BUSHWHACKER View Post
                      One other area to check while you have the clocks out:
                      Remove the screws that hold the speedo assembly to the housing and lift it out, then inspect the circuit board on the back for any breakages or burnt tracks.

                      Great news on the central locking, is that the project you had nailed to a board when I came to visit all those years ago?
                      I've put it back together now...

                      It is that project, but a different surf, and a different box of tricks.. The one on the board burst into flames! This one came with negative switching, so after all that, it only took half an hour to do
                      it's in me shed, mate.

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                      • #12
                        Originally posted by BUSHWHACKER View Post
                        One other area to check while you have the clocks out:
                        Remove the screws that hold the speedo assembly to the housing and lift it out, then inspect the circuit board on the back for any breakages or burnt tracks.

                        Great news on the central locking, is that the project you had nailed to a board when I came to visit all those years ago?
                        Just had the clocks out (again...) and you were right. A track was burnt out on the back of the speedo itself. Luckily the speedo in the 2.4 unit I had kicking about is the same, so I now have a working speedo again. Yay, and thanks very much.
                        it's in me shed, mate.

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                        • #13
                          Yay!

                          Do I get to choose something from the shed now?

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                          • #14
                            Originally posted by BUSHWHACKER View Post
                            Yay!

                            Do I get to choose something from the shed now?
                            Anything off the top shelf...
                            it's in me shed, mate.

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                            • #15
                              Top shelf? Oooh, he's really happy with you Vince!
                              4x4toys.co.uk - Keeping you on and off the road...

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