4.3 electric fuel pump no power. Puzzled…

Group_er

Cadet
Joined
Jul 5, 2008
Messages
25
Engine serial # Om346350
No power at fuel pump.

Purple wire on starter stud shows 12v while cranking. As it should…
Oil pressure switch received 12v while key is in run position. As it should. (Currently jumped closed with a paper clip)
Still no power at the factory plug for the fuel pump.

From the research I’ve been able to do, these are the only two things I’ve learned to check. Can anybody direct me in another direction?

Any help very much appreciated!!

Thank you.
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Use a multimeter and check the wire between the pump and the switch, and also check the negative side of the pump supply...
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,291
testing voltage is fine but where are you testing for the ground side?
 
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