Has anyone encountered this problem? About a month ago my ‘05 1500 4.7L started showing no oil pressure at start up, only when cold. What I do is immediately shut it off then re-start and the guage jumps up to where it should be. I’m guessing that it’s only a problem with the gauge or the sensor because I’ve never had the idiot light come, even when the gauge reads 0.
I’ve use only Pennzoil Ultra full synthetic oil every 3,000 miles since 23k, I’m at 87k now so I don’t think I have a problem with sludge (but you never know).
I do an instrument check and all the gauges pass and I get a C-code of 00 00.