How to test Hall sensor off car? (700)

Discussion in 'General Motoring' started by M.J., Oct 18, 2004.

  1. M.J.

    M.J. Guest

    Hi

    I have a 740 GLE which died on me on the motorway. By the symptoms
    (no reading on tacho when cranking engine/fuel pump not working) I'm
    assuming that the electronic points/Hall sensor have failed.

    I have removed the distributor and noticed that the black plastic
    connector has disintegrated, but as far as I know, the connections
    were/are still ok.

    Does anybody know of a way to test it with the unit off the car?

    any help gratefully received


    Mick
     
    M.J., Oct 18, 2004
    #1
  2. M.J.

    jay adams Guest

    Pretty simple,really. Attach red wire to 12v (B+),black to ground (B-),
    center green is signal. I use a test light from green terminal to ground.
    Rotate the distributor shaft, and a good Hall switch will turn the light on
    and off.
     
    jay adams, Oct 19, 2004
    #2
  3. M.J.

    M.J. Guest

    Jay

    Thanks very much for that info - I was hoping it would be that simple :)

    MJ
     
    M.J., Oct 19, 2004
    #3
  4. M.J.

    radietz Guest

    BTW the plastic insulators are available separately from the dealer and
    are quite cheap.

    Bob
     
    radietz, Oct 19, 2004
    #4
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