Mechanics

OIL PRESSURE

2005 Pontiac Grand Prix

Engine Mechanical problem
2005 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic 74,000 miles

I have a 2005 pontiac grad prix with a 3.8 a while ago the oil pressure gauge began sticking at 120 lbs then it began to fluctuate now it is at 0 where is the iol pressure switch located
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Kbtoy
November 10, 2008.



Switch is under the PS pump.

If you are getting any valve noise have the oil pressure tested with a mechanical gauge.
If not, then I would change the oil pressure switch.

It is also possible the gauge itself is bad.

Mmprince4000
Nov 10, 2008.