Mechanics

OIL PRESSURE GAUGE

2000 GMC Truck

Engine Performance problem
2000 GMC Truck 4 cyl Two Wheel Drive Manual 133335 miles

my oil pressure gauge drops then rises after switching gears in first and second but stays at 3/4 in 3rd and 4th
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Stever1963
October 3, 2009.




Check the oil pressure with a mechanical gauge if normal replace the oil pressure switch abnormal reading could be the oil pump and engine bearings

Tiny
Rasmataz
Oct 3, 2009.


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