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Thread: wtb mfi parts

  1. 07-29-2010, 01:50 AM #1
    pistolpete
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    wtb mfi parts

    I am looking for a good speed switch,micro switch and fuel shut off solenoid for a 1973 mfi
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    Coutu@theburgessfarm.com
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  2. 07-29-2010, 09:51 AM #2
    Flieger
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    Max Sluiter Flieger's Avatar
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    Are you sure the microswitch is bad? If it is not getting 12V ever that is because there is a discontinuity somewhere. The 12V only goes to the microswitch when the RPM transducer allows it. The RPM transducer may just have a broken lead on a transistor on the board. If so, you can repair it yourself. The rebuilt units are quite expensive. I am surprised that the solenoid does not work when jumpered. They seem rather robust.
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    1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
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  3. 07-29-2010, 05:47 PM #3
    pistolpete
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    I put 12v to the solenoid and it made no noise. Do I have to ground it when i test it?? There is no power at the microswitch. Who rebuilds the speed switch?? I am not capable electronics is not my forte.
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  4. 07-29-2010, 06:23 PM #4
    Flieger
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    Shake the rpm transducer first. If it rattles, then open the box and slide out the board. That part is easy. If there is a transistor loose, you only need some simple soldering tools.http://forums.pelicanparts.com/porsc...-warren-2.html

    Otherwise, I believe Otto's in Venice rebuilds them.

    You need to have a positive and negative wire to give 12V to the solenoid. The negative wire would be a ground.
    1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
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  5. 07-30-2010, 04:35 AM #5
    Cornpanzer
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    I have a local contact to repair/rebuild the transducer at a very reasonable cost. He repaired mine as well as a several others on this board.

    PM for contact.
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