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1996 GMC Sonoma oil pressure

Tiny
OLDFART52768
  • MEMBER
  • 1996 GMC SONOMA
Engine Mechanical problem
1996 GMC Sonoma 4 cyl Two Wheel Drive Automatic

I have good oil pressure when engine is cold(40PSI). As temp rises the oil pressure drops. I replaced the oil pump but it did not help much.
Tuesday, September 21st, 2010 AT 8:36 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Oil pressure drops to what? Could be engine bearings problem
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Tuesday, September 21st, 2010 AT 10:22 PM
Tiny
OLDFART52768
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Almost nothing
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Sunday, September 26th, 2010 AT 11:49 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If there's no engine knocking noises and you're reading off from the dash gauge-I suggest you use a mechanical gauge and hook it up to where the oil pressure switch and check it there-if its the mechanical gauge-try checking the oil pump.
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Sunday, September 26th, 2010 AT 4:39 PM

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