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Check gagues

Tiny
MNO221
  • MEMBER
  • 1990 GMC C1500
  • V8
  • 2WD
  • AUTOMATIC
  • 285,000 MILES
1990 gmc pu, my check gauges lite came on and my oil pressure is registering past 60. What can cause that.
Wednesday, April 6th, 2011 AT 1:28 AM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Past 60psi-could be the oil pressure relief valve not opening-check it with a mechanical gauge
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Wednesday, April 6th, 2011 AT 2:23 AM
Tiny
MNO221
  • MEMBER
  • 49 POSTS
Thanks
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Wednesday, April 6th, 2011 AT 4:50 AM
Tiny
MNO221
  • MEMBER
  • 49 POSTS
Is the oil pressure relief valve the same as the oil pressure switch, oreily only show a switch not valve?
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Monday, November 14th, 2011 AT 4:44 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
No, the oil pressure relief valve is in the oil pump-the switch reads the pressure-the oil pressure relief valve controls the oil pressure
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Monday, November 14th, 2011 AT 5:08 PM

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