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miket007 · 07-26-2017, 02:19 PM

Thanks guys...before I posted when I put a meter on the sending unit I checked the gauge for behavior while disconnected and it is behaving as it should....

I put a mechanical oil pressure gauge directly in place of the sending unit and got plenty of pressure at all RPM levels including idle, in gear with AC on. Motor and oil pressure is fine...the sending unit was leaking it appears. So today a new sending unit will be installed and I can cross this one off my list.

07-26-2017, 02:19 PM	#4
miket007 Registered User Join Date: Apr 2015 Location: Phoeniz, az Posts: 5	Re: 78 C10 oil pressure readings and grounds Thanks guys...before I posted when I put a meter on the sending unit I checked the gauge for behavior while disconnected and it is behaving as it should.... I put a mechanical oil pressure gauge directly in place of the sending unit and got plenty of pressure at all RPM levels including idle, in gear with AC on. Motor and oil pressure is fine...the sending unit was leaking it appears. So today a new sending unit will be installed and I can cross this one off my list. __________________ 78 C-10 Silverado Big Ten A/C, PS/B, Tilt, GM 350HO/T350, 12 bolt posi, Two-Tone full length Headers, Lowered with factory ralleys, 2.5" duals with Dynomax 17749's 69 Caprice 2d Custom Coupe 427