Anti-slosh bypass question

[EricNobody]

anyone know which pins/wire colors to jump to bypass? 90 ranger single cab 4x2 5speed 2.3l.



Issue has existed since buying couple months back, have replaced gauge cluster and fuel pump. Gonna check the wiring from the pump in a couple days when I flip the hangers and install the front suspension, just wondering how to bypass, I'll try fixing the board, contacts, ECT. But tomorrow I'm swapping my old odo roller in to my new gauge cluster. Problem has been identical with cluster swap, so I'm thinking it may be the slosh unit






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[adsm08]

What is the symptom? The anti-slosh unit is usually part of the cluster. The early ones aren't usually a true anti-slosher so much as an electric pusle damper.

 

[EricNobody]

Basically, original non tank cluster, dead gauges, minimal rise 1/8 difference between full and empty, needle sat about quarter tank no matter what. Swaped to a tach unit from identical truck, year, engine trans, ECT.



Changed pump and sending unit, gauge still doesn't read anything but 1/4





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[EricNobody]

Also, both units needles centre out when disconnected, after install, they both move to the same location.



Visual inspection and jiggling of the wiring at the pump caused no change, and aside from being dirty externally, the plug was in good-great shape. No wire was pinched when bed was reinstalled, I was underneath watching the harness and lines as it was lowered back to the frame.





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[TrexMex]

Also, both units needles centre out when disconnected, after install, they both move to the same location.



Visual inspection and jiggling of the wiring at the pump caused no change, and aside from being dirty externally, the plug was in good-great shape. No wire was pinched when bed was reinstalled, I was underneath watching the harness and lines as it was lowered back to the frame.





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Try grounding your connector at the pump, needle should go to Full. If that doesn't happen then you have a problem in your wiring..

 

[adsm08]

Yeah, this is starting to sound like a wiring problem. Either you have a bad ground or a poor supply voltage.