Oil pressure fluctuations

Asked by May 02, 2017 at 07:04 PM about the 2005 Chevrolet TrailBlazer LS

Question type: Maintenance & Repair

Gage going from 40 to 20

1 Answer

74,605

The oil pressure does go from 20 lbs to 40 lbs when driving. Once the rpms are up it should read around the 40 lbs mark or even more. Idling oil pressure is 20 lbs.

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