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Old 04-15-2011, 07:52 PM
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Oil pressure pegs when block is grounded

Hey guys, I got my ride all hooked up and everything works perfect until you ground the block. All my electrical (lights, gauges, etc.) is grounded straight to the battery so everything works good. When you ground the block to the battery or the block to the frame and frame to the battery my oil gauge pegs out at 100 and won't work at all. Even trying to ground the starter so you can start it pegs it out, I used this same harness, gauge, and sender before and it worked fine. Could my sender have gone bad?? It's an autometer elec. Oil press gauge. Iv never had this happen before. Any info would be appreciated, thanks

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Old 04-15-2011, 09:23 PM
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i would guess that its the sending unit
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Old 04-16-2011, 04:57 AM
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Take a temp jumper wire and ground one end..... touch the other end to the sender housing (not the wire coing out of the sender) if it pegs....I'd say it's the sender
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Old 04-16-2011, 05:38 AM
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Thanks guys, i tried that too and it still pegs. I guess I'll pick up a new sender today, never had one go bad so didn't know what it would do. But if the blocks not grounded and you turn on the gauges, the needle raises to 0 like it's suppose to. Just an odd case.
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