why does the oil pressure read high when key is on and engine is not?

Asked by Apr 26, 2014 at 06:11 PM about the Dodge Ram 2500

Question type: Maintenance & Repair

We already changed the oil sending unit on the side of the block and we have already
done a manual oil pressure test on the top of the filter and we got a good reading, we are
getting oil to top end on rods and we have plenty of oil in pan...still not getting oil pressure
on gage in cab.

2 Answers

90,675

Wiring, gauge, insturment cluster, or connector problem

975

try unhooking the battery, sometimes on many vehicles when changing the oil or a simple part will mess up the computer at times. if it still does not fix the issue you are having then you right away need a oil pressure regulator switch relay. its in your fuse panel next to the battery. labled oil pump relay or pump relay.

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