How to test Hall sensor off car? (700)

  • Thread starter Thread starter M.J.
  • Start date Start date
M

M.J.

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
 
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

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

MJ
 
Jay

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

MJ
Click to expand...
BTW the plastic insulators are available separately from the dealer and
are quite cheap.

Bob
 
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