Originally Posted by zakmartin

On a 2007, oil pressure at idle should read 14 psi. At 2000 RPM, it should read 43 psi.

Thank you. Talked to dealer and they are going to check it out for me.


Here's the FSM link - go to page 7.

It's nice to see someone finally doing some actual diagnostic work for a change around here. I'm getting sick of people swapping parts "just because."

Originally Posted by zakmartin

On a 2007, oil pressure at idle should read 14 psi. At 2000 RPM, it should read 43 psi.

Here's the FSM link - go to page 7.

It's nice to see someone finally doing some actual diagnostic work for a change around here. I'm getting sick of people swapping parts "just because."

Originally Posted by zakmartin

Thanks Alex. My feelings exactly. I'd offer to let you use my garage, but Portland to Seattle is a long way to drive on low oil pressure. I have a full diagnostics station (computers, dials, everything...) and about $60K invested in just about every tool you could imagine. I worked in a garage for a couple years, got sick of it and went to college. Now, 25 years later, I'm thinking about opening up a shop again. I guess the grass is always greener on the other side. Cars were easier to work on back in the 80's anyway.

Originally Posted by Alex Tappin

Okay. For about 4 days I have been on every forum and every possible Google search on this.

I have a 2003 350z that is showing signs of low oil pressure! At warm idle, the car will drop to 0 pressure and the light will come on... I just replaced the oil pressure sending uinit (it was pegging my pressure at 120) and now it is showing low pressure at idle... I checked the dip stick, wiped it then put it back (all while the car was running) and upon pullin it out, it was still full of oil up and down the entire stick even tho my car gauge is saying 0 oil pressure and the light is on. I went to autozone and they said no codes were being thrown.... What gives??!

I had thought maybe I had the issue in the timing belt cover galley gasket but it is not throwing codes. I thought maybe the bearings were going out but I cut open my used oil filter (just changed oil) and there was absolutely no metal parts in there at all. I have yet to hook up a mechanical guage and check the pressure that way.... I guess this is my last hope (and hope that there is pressure)..

Any thoughts?

Thanks

Update: I hooked up a mechanical gauge and oil pressure is reading perfectly fine. Could 2 oil pressure sender's be faulty? Could there be some type of short in the wiring?