not real sure where to post,Oil guage pegged out High side

gotyourback · Jun 13, 2016

not sure what all to check the oil pressure is pegged to the high side, what should I check the rest of the gauges work fine ...thanks for the help
89 Silverado 5.7 stock all the way , its pegged all the time off and running

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WayneJ · Jun 21, 2016

I just replaced the engine in my 94 z71 and had the same issue. It turned out i forgot to plug the connector into my oil pressure sensor, which is located to the right of the distributor if you're in front looking aft. So it's possible that you've lost comunication with that sensor.

Chevy1500 · Jun 21, 2016

Sounds dumb, but try tapping on the gauge.
Ever since I put in a high flow oil pump, my oil pressure at start up is regularly 80 and above and once in a while the gauge gets stuck above 80. A couple of taps on the gauge and it lets go and works as it should. Worth a shot.

Kyle

Rand Man · Jul 24, 2016

I have an '89 1500. That style of gauge can be hard to read. I'm not sure if mine is "pegged" or zero. It's just white. I'll try tapping on it. I don't think it would have a separate fuse.

Justin S · Jul 24, 2016

Its either unplugged, has a broken wire, or needs a pressure sender. Works the same as the fuel gauge, if the resistance is too high, or open, it will read full/high, not empty/low.

Rand Man · Jul 25, 2016

Thanks. I suspect several loose wires on this thing. The speedometer works every other day. The previous owner says he replaced the speed sensor right before I bought it (a few weeks ago).

Jrgunn5150 · Jul 25, 2016

Rand Man said:
Thanks. I suspect several loose wires on this thing. The speedometer works every other day. The previous owner says he replaced the speed sensor right before I bought it (a few weeks ago).

Previous owners are your worst enemy, Justin is correct, it's probably a bad wire somewhere along the way.

not real sure where to post,Oil guage pegged out High side

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