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Which fuel pump is causing the problem? 700 1986

posted by  Don Foster on  Wed Jan 1 23:19 CST 2003
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last visit: Sun Oct 5 11:53 CST 2014
[RELATED]

Your quickest and easiest diagnostic is to resolder your fuel pump relay. It's known to cause symptoms just as you describe. Cost $0, 15 minutes, no risk, clean 'n easy work.

If it helps nothing then you've spent nothing.

Resolder your OD relay, too.

When my wife's '91 740 stalled at roadside, I towed it home and resoldered EVERY relay I could find, including those underhood.

Your symptom could also be the hall effect sensor in the distributor.
--
Don Foster (near Cape Cod, MA)






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