C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

erratic oil pressure gauge

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Old Dec 15, 2018 | 03:04 PM
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Default erratic oil pressure gauge

Oil pressure readings random readings sometimes OK. Replaced both oil pressure switches and no better results. Ran a manual gauge connected for a week and confirmed oil pressure is OK.
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Old Dec 15, 2018 | 03:41 PM
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Start checking wires. Something is wonky somewhere. Iirc the sender grounds through itself so somewhere between the gauge and dash is my bet.
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Old Dec 15, 2018 | 06:57 PM
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Originally Posted by violinsib
Oil pressure readings random readings sometimes OK. Replaced both oil pressure switches and no better results. Ran a manual gauge connected for a week and confirmed oil pressure is OK.
Both oil pressure switches?
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Old Dec 18, 2018 | 12:19 PM
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You should only have 1 oil pressure switch, it should be at the back of the intake manifold on the drivers side....WW
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Old Dec 18, 2018 | 12:42 PM
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The OP has mentioned this a 'few' times - a couple occasions in 2014 - I mentioned in one of those threads that since he hadn't mentioned year I assumed that his gauge would likely have been a 'bell shaped" affair. I don't believe I've ever seen the OP mention year specific but through '88 it would have been a 'bell shaped' single wire sender.

In 2014 he mentioned doing a 'mechanical' also.
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