Mechanics

OIL PRESSURE

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.
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Oldfart52768
September 21, 2010.



Oil pressure drops to what? Could be engine bearings problem

Rasmataz
Sep 21, 2010.
Almost nothing

Tiny
Oldfart52768
Sep 26, 2010.
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.

Rasmataz
Sep 26, 2010.