My oil pressure sending unit recently broke

1999 CHEVROLET SILVERADO
247,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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HUNTERBBB
  • MEMBER
  • 2 POSTS
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.
Sep 20, 2020 at 10:30 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 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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May 1, 2021 at 6:54 AM
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