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Testing a CMC white faced Vintage oil pressure gauge

Heritage 2008Heritage 2008 Supporting Member

I believe my gauge has gone to gauge heaven--all others work fine. Yes I know I should spend the $$$ and do the upgrade but other areas are in need of attention right now. Also the PO laid what looks like walnut on the dash.

I have grounded the wire with ignition on and the gauge did nothing. It seems like it is pegged way down on the left side much further than a normal gauge would start at when not activated. Am I missing something? I did check the wires behind the gauge and the green wire that ties in the other gauges was loose--now it is tight. Could a loose connection shorted out the gauge?

I  swapped out the sender last year and did not use anything on the threads other than oil.

Help??

David

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Alan MerklinAlan MerklinDrclock - Elkins, West Virginia Supporting Member

Remove the existing wires form the gauges to isolate the gauge from a possible in car wiring issue.   Those are imprinted with  " Vintage- Reproduction " on the gauge face... Confirm you are getting 12v at the (L) on the top right of the gauge & confirm a good ground  terminal at  center bottom of the gauge. Then using a small jumper wire... jump gauge (S) sender terminal (left on gauge) to ground, if the gauge is good then the needle will peg to the right.

Last edited by Alan Merklin
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