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Issue with gauges

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Old Aug 22, 2021 | 05:30 PM
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Issue with gauges

84 Camaro has a 5.7 swapped into with a carb. I bought it like that and the gauges do not work right at all i get like max oil pressure and my tach reads full rpm basically all the time. Focusing on the tach for now and i found a wire that has a small cut in the insulation but all the wires inside seem fine still not sure if that is doing it or not. Is there some resistor or something i am missing out on that would make it perform properly? Think that the distributor is a ac delco 065-88961867 not sure if that really matters or not. Thanks for any help in advance and if you know why the oil pressure one would be messed up id like to hear that aswell.
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Old Aug 22, 2021 | 07:25 PM
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Re: Issue with gauges

Max oil pressure reading = wire disconnected from sending unit, or broke, or some such

Tach reads stupid high = normal; that's how they always fail

Hard to say about wire w cut; what color is it?

Doesn't too much matter what dist as long as there's not a MSD or the like involved
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Old Aug 22, 2021 | 07:37 PM
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Re: Issue with gauges

Its a brownish wire to the tach and it has a small AA battery looking thing that i am not sure if its a resistor or capacitor or what that thing is. Ill have to look into where the wire from the sending unit is for the oil aswell. Might be worth it to just buy an aftermarket tach and wire that up i guess?
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Old Aug 22, 2021 | 08:05 PM
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Re: Issue with gauges

Tach wire should be white.

The thing that it goes through is a noise filter.

I DESPISE aftermarket tachs, However, a dash ornament (that's REALLY what the factory thing is, not an "instrument") that's humorously (or not) wrong, is worse than worthless. Those tachs are not easy to repair for someone unfamiliar with working on PCBs and equipped appropriately. Easy enough for those of us who are; for others, not so much. Kinda like, brain surgery is relatively easy for a brain surgeon, but I don't think you want ME inside your skull with a sharp blade.
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Old Aug 22, 2021 | 08:14 PM
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Re: Issue with gauges

I've done work on PCB's before but eeh ya i dont think its worth it, guess ill fix that wire and if that dont fix it then oh well. Thanks for the help man.
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