tripled

Hi there I am new to this form and I do have about 8yrs years experience working with cars and motorcycles. That’s why this issue has me scratching my head for five months here’s the story.

So I have a 2008 G37s coupe 5AT with VHr 146,000 miles. MODS 3in intakes, ISR LTH + ISR single exit, 570cc injectors, 340 fuel pump, Valvoline 10W-30 full synthetic high mileage Tuned on 93/e85 by Admintuning.
The car ran just fine after installing all of these mods but I got wind of the galley gasket issue and wanted to address it before I had a tragic incident (I mainly use this car for street and track racing ). So I bought a kit from Z1 motorsports that included a water pump and all the gaskets and replacement O-rings that I would need. It took me about two days to do everything properly as far as cleaning the surfaces aligning the timing etc.

and yes I’m sure my timing is correct I’m sure I replace the galley gasket correctly, I double triple checked my work before closing the timing cover back up. When putting everything back together are used brand new 10W-30 oil and brand new coolant.

well I start the car up and it runs just fine for about 10 minutes once it warms up it started surging as if it had a vacuum leak( LIMP MODE ) so I’ve pulled out the soapy water and sprayed it down, didn’t find anything.
next I pull out my code reader and I get these codes:
p0524 & p0447. After looking the codes up they pertain to engine oil pressure to low and vent control valve. next I cleared the codes and try and take it for a test drive the car seems to run Jerky at low RPMs but as I slowly give it gas it will accelerate but once you hit 3000 RPMs it goes into limp mode the only way to bypass this is to slowly accelerate the car in manual and switch the gears if you do this you can get it up to highway speeds there are no funny noises coming from the car while driving it like this even though I know this is not safe.

so that brings me to now within the past five months I have replaced camshaft position sensors, VVT sensors and volt checked them to make sure there working, oil pressure switch charged twice and Ohm and volt checked it also….. my next move was to check oil pressure, so I purchased a gauge from O’Reillys gauge from 0 to 300 psi.

I checked the service manual but it doesn’t give you oil pressure in detail it only states 14psi or more at idle and 43psi or more at 2000 RPMs…. So I called Z1 MOTOSPORTS to ask a technician what oil pressure numbers do they usually see on the VHR motors, these are the numbers he gave me.

this is once your car is at operating temperatures
Idling - 30-40psi
2000rpms - 50-60 psi
hard revs - 80-90psi

my 08 g37 oil pressure test
idling - 30-35psi
2000rpms - 70-80psi
hard revs - 90-100psi

So as you can see the the pressures are a bit high but I can’t find anything on the g37 forms where someone has had trouble with high oil pressure on these motors. I also wonder why I’m getting the P0524 code if my oil pressures are normal or above.

i’ve also gotten a P0021 & P0011 BUUUUT Only if I clear the codes and force the car to drive before going back into limp mode.

So I’m just wondering if anyone else is experiencing this P0524 code after doing the galley gasket job but has normal to high oil pressure??????????

if anyone could please help me out that would be great I have been dealing with this car for five months and I am running out of solutions and money🤦🏽‍♂️

Rochester

iTrader: (9)

Welcome to the forum.

Good luck with your problem, however please don't create duplicate threads.

/closed