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glenwallace408 04-11-2013 11:50 AM

Oil pressure sending unit and plug
I have a 1998 tj 4 cylinder and recently broke the the plug. So I bought a new plug and sending unit and installed them but now the gauge light is on and the gauge shows zero pressure. I hooked up a test light and the gauge worked when grounded and only when the engine was not running. Any help would be great full

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