kdittbenner

OK, this is what i did, and next oil change i will send a sample. It gets cold here, Minnesota. I started the truck, let idle for a minute. truck was outside over night. i put it in Tow mode and drove it, got RPM up to 4000, pressure after the pump got to 80, top of the engine was 50ish. I was thinking it would make the pressure relief in the pan open and push any junk out the relief. well, from what i can tell it worked. i have put 300 miles on the truck the last 3 days. pressure has not gone below 20psi at idle. Last week i would lose pressure in the first 5 to 8 miles. i lost pressure 3 different trips in a row. hope this can help someone else. Thanks for the help.

im having same issues. I cleaned the screen under the pressure switch, I had a mechanical guage T'd into the pressure port and they both would go down to 6-8 PSI. pull off the side of the road and shut it down. start back up go to 30 PSI and slowly drop back to under 10PSI. when i pulled the screen I dropped the oil, and filter. ran a hose to the pressure port, poured some seafoam in the port and blew it back down to the oil filter to make sure no junk left in the oil galley. I did remove the mechanical gauge from the pressure switch port and put it in the port just below and behind the power steering pump. i have maintained 50 ish PSI on the gauge at this port even when losing pressure at the top of the engine. It has to be the oil filter, or the pressure regulator in the oil PAN is leaking. I had oil pressure issues with this truck 50K miles ago. at that time i put in a new oil pump, Pickup Oring, installed the oil deflector on the regulator in the oil pan, and did the piston ring cleaning procedure. have not had an issue since. if i remove the oil filter, is there a way to direct air to blow through the oil pressure relief in the oil pan? is there anything at the top of the engine that has a gasket to create oil pressure? here is my thinking. when the oil pressure drops the engine does not change sound- no tapping, ping, clatter. that is telling me there is still oil flow.... the oil needs a restriction to create pressure. does that make sense?