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My oil pressure sending unit recently broke

Tiny
HUNTERBBB
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 247,000 MILES
My oil pressure sending unit recently broke, I replaced it and within 3 hours of driving in the new sensor my oil pressure readings are way passed 80 before it was just 0 as the sensor broke off from the threads. All other gauges work just fine.
Monday, September 21st, 2020 AT 5:30 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

First, I would remove the sensor and test the pressure manually to be sure the 80 pounds is correct.

https://www.2carpros.com/articles/high-oil-pressure

If it is, then it could be a bad check valve in the oil pump.

If it is not then it could either be the new sensor or the wiring.

I attached the connector diagram and a flow chart for the switch not working properly.

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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Saturday, May 1st, 2021 AT 1:54 PM

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