Mechanics

OIL PRESSURE

1986 Chevrolet Silverado • V8 2WD Automatic • 142,347 miles

Have a 1986 chevy silverado c30 dually 454 cu. Oil pressure guage sitting on 0. Drove truck about 40 miles yesterday engine is running fine no knocks or anything to indicate no oil pressure. What steps can I take to determine why guage isnt working? Could it be oil sending unit? Stock electical guage.
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Nitrorick
April 18, 2011.



Check the oil pressure with a mechanical gauge, if normal replace the oil pressure switch. If abnormal could mean oil pump and engine bearing.

Rasmataz
Apr 18, 2011.
What Ras suggested is the correct procedure but with the labor time it takes to do that, it may be cheaper to just replace the sender and see if it fixes it.

Wrenchtech
Apr 18, 2011.