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removing air box s50

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  • #16
    You can check the working condition of the TPS before replacing,

    some details here,


    https://www.z3mcoupe.com/forum/showthread.php?t=2671

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    • #17
      Hi Dave

      I have nt got round to doing anything yet, the weather is rubbish and the car is stored, am waiting for a bit of time and good weather to get this sorted. I have seen a video showing the resistance should be 4.5 omhs and I havnt tested yet.

      I will let you know what happens :) I think it will be TPS, I hope :)

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      • #18
        When mine “failed” i had rough running on part throttle/cruise which i put down to it spending most time in that position and therefore the tracks worn perhaps. This might be difficult to test for as it might for the most part show ok readings

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        • #19
          Thanks for info

          Yeah, I know there are error codes on the engine that my indie couldnt get into, so he cleared them. They came back straight away. I m guessing about the throttle position sensor, but did read a thread on here where this solved a similar issue to mine.

          I might just get the codes read, this might be the best place to start. Does the S50 motor have cam position sensors or is this all controlled by the Vanos?

          Thanks, Dave

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          • #20
            Yes has 2 cam sensors, one is visible on the inlet cam near the throttle switch, the other is down the left side near the exhaust manifold. The exhaust cam is no too bad t o change, but the inlet I think needs the fuel rail removing. MO quite reliable if genuine parts.

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            • #21
              Originally posted by the badger View Post
              I have nt got round to doing anything yet, the weather is rubbish and the car is stored, am waiting for a bit of time and good weather to get this sorted. I have seen a video showing the resistance should be 4.5 omhs and I havnt tested yet.

              I will let you know what happens :) I think it will be TPS, I hope :)
              Definitely worth checking this, mine had a poor idle and one of the solenoids needed re-soldering - One of the nice easy fixes

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