DSMPT
DSM Wiseman
- 2,796
- 2,497
- Jun 12, 2014
-
Japan / Mexico,
Arizona
If this happens randomly, first I would check if the pressure relief valve's plunger slides smoothly in the OFH or not. I don't know how you are monitoring the oil pressure but I would check the oil pressure sensor/gauge/wiring, too.I let the car cool off,started it up and it actually goes to about 50ish psi at about 1100 rpms cold if I give it just enough gas to get to about 1300-1400 rpms it goes up to about 70-75psi in the oil pressure. my idle tends to be a little low on my cold starts because of this damn q45 throttle body. I’ve been tinkering with it to try to get it to work but all in all I think maybe the pump is ok so far anyway. I just got the car so I’m not ruling it out
If the oil pump itself is the cause of the low oil pressure, that's rare, but if so, you would probably see aluminum flakes in oil already.