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fuel pump relay circuit problem 200 1983

"Can I test it by sticking one end of the tester in the 31b connection of the FPR connector, the other to ground, and cranking? Or testing it at the connection on the coil?"

Yes test at the relay first. You can leave the relay connected and "back-probe" with your test light where the white-red wire goes into the plug. I now believe the light should "flash" (rather than glow dimly) if coil pulses are there.

If you don't get any pulses at the relay plug, then check at the coil. Sometimes just taking the coil connectors off and on a few times will rub off any oxidation or corrosion.
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.






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