Just recently I've noticed oil psi drp aft driving 40mi.Turning the engine off & restart brings pressure back up but will drp aft 10mi. Engine runs smooth @ idle and when given gas. No warning lights come on.
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2003 Chevrolet Silverado 2500 HD Question: Gradual psi oil drop from 40/0.Oil lvl gd,no warning lights.
Answer #1Greg's Orange Auto (12234 Answers) , Orange, CA - (714) 361-9386globalhelper December 11, 2012, 12:40Master
do a manual oil pressure test and if good repl oil sending unit
Answer #2Tomiko December 11, 2012, 16:04Journeyman
Yikes! maybe your sensor is bad or your oil pump is losing pressure
Answer #3your.mechanic December 11, 2012, 18:42Master
You need to check your oil pressure with a gauge...good oil pressure = bad sensor; bad oil pressure = possible oil pump issue...
Answer #4ziptie12 December 12, 2012, 14:36Master
Pick-up screen in sump is possibly clogged. R&R oil pan & clean or replace.