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the oil pressure gauge was going bad on my 1990 F250 351w. i replaced it with a mechanical guage and now the engine light is on. Any ideas why? and also how to fix it?
Ground that wire and if the gauge doesn't peg to full high, leave it grounded to keep the engine light off. Or you could remove the bulb since it just lets you know that oil pressure is low or non-existant or that the water temp is too high.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
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