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Flywheel sensor?

Discussion in 'Bay Tech Clinic' started by mr happy, May 21, 2018.

  1. mr happy

    mr happy Active Member

    Messages:
    138
    Location:
    Brisbane
    Guys,
    Prior to me purchasing Alfie the engine was overhauled last year and the case changed due to a crack. Engine has not been back in the bus yet. There is what looks like a sensor mounted in the engine case on the flywheel, is this for a fuel injected bus? I'm going to be running dual solex carbies and the bus was in a million pieces when i bought it so i'm thinking the bus the replacement engine case came from was efi. Forgive my ignorance I'm just picking stuff up as i go along!!
    F1628A7E-9A76-44EA-B107-AF41388B3861.jpeg
    Regards

    Mr h
     
  2. cbus

    cbus Well-Known Member

    Messages:
    10,927
    Location:
    sunshine coast
    Chidori and mr happy like this.
  3. Barry

    Barry Well-Known Member

    Messages:
    2,757
    Location:
    Abbotsford NSW
    I believe the plug you have circled is something to do with diagnostics during factory stages?

    That is what I was told long ago
     
    David H likes this.
  4. rstucke

    rstucke Well-Known Member

    Messages:
    659
    Location:
    Wamberal NSW AUS
    It's a magnetic pick up for the timing light and tacho for the diagnostic terminal that some vw's had that allowed them to be connected the vw specific tune-up machines at some dealerships.
    There's 2 pins on the flywheel that trigger it
     
    David H and Grantus like this.
  5. mr happy

    mr happy Active Member

    Messages:
    138
    Location:
    Brisbane
    Cool, was wondering where i should be connecting it to, seems like nowhere, cheers fellas

    Mr h
     
  6. 1500king

    1500king Well-Known Member

    Messages:
    1,532
    Location:
    Adelaide, SA
    Indeed. It is a shielded Inductive pickup that picks up 0 and 7.5 degrees btdc on the flywheel. I have the genuine VW tune up machine, use it almost daily as It is portable.. and also plug into the sensors where they are still serviceable to set distributor timing. V.A.G 1376. Also have the sensors stashed for future projects.
     
  7. 1500king

    1500king Well-Known Member

    Messages:
    1,532
    Location:
    Adelaide, SA
    The sensor had it's own lead and plug that continued to the "vw diagnosis" socket.
     

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