I'll see if I can get that info. They've had the car a whole day for my appointment @ 7:30am this morning. They just got to looking at it at 4pm this afternoon. The service guy told me they are going to start with swapping the cam sensor that I already replaced... guess we'll see how long they take to figure it out!

Service guy told me the cam sensor could cause the low oil pressure issue... I don't buy that.

 

It wont cause low oil pressure, but it will throw a low oil pressure code. After i had the gasket repaired, the codes came back. this was fixed by replacing the sensor. The cam sensor will trigger the low oil pressure code if it's not getting fed enough oil or if it's malfunctioning and thinks it's not getting fed. It's understandable that they want to try the cheap and easy fix before ripping the whole engine apart.

 

I get that they want to try the simple fix first. The thing is I already replaced the sensor with the same Denso sensor which is the same manufacture/part as the OEM sensor.
Before I replaced the cam sensor I had a P0021 and P0300 (ran like ****, with constant misfires). After installing the new cam sensor the P0300 went away and the engine no longer misfired.
But then P0021 and P0524 codes were triggered 15 miles later.

I guess we'll see what tomorrow brings....

Still pisses me off that they didn't look at my car until around 4pm today when my appointment was at 7:30am.

 

I was in the loaner for at least a week.

 

Got the car back from the dealer. The cam sensor was good. The driver side IVT solenoid was sticking, they replaced that and reset the codes. They did not do an oil pressure test. So far the car seems to be doing fine after 50 miles.

I had P0021 and P0524 codes. The IVT solenoid controls the oil flow to the cams, the engine has 2 of these (driver and pass. side). I get that this would cause the P0021 code if an IVT solenoid is failing. I'm not truly convinced that a bad IVT solenoid would cause oil pressure low enough to throw the P0524 code (engine oil pressure low).

I guess we'll see if anything happens in the next couple hundred miles. As others on this forum have had the easy fixes (sensors & solenoids) done by the dealers initially. But those only seemed to temporary fixes in some cases.

 

Damn, I worry about having this problem. I wonder how many people have had this, who run synthetic oil I always ran Syn with my BMW and cars before that. It seems that this car has had a history of Dino oil and it has 158k On it. Synthetic is supposed to do a better job of cleaning and I really want to use it, but maybe if it isn't broke, I shouldn't fix it.

I don't know why they put the timing gear in the back, they have done this with Audi's and it has caused a lot of problems when the timing guides brake. Them putting steel covers on an aluminum engine seems like a stupid idea as well. I doubt I would have bought the car, knowing all the potential problems.

 

Synthetic oil or a clean engine have nothing to do with this problem. I used synthetic and my engine was extremely clean. It's simply a matter of the gasket being inadequte to do it's intended job.

 

I agree that the gasket is inadequate, but I certainly don't want to exasperate it. It be interesting to see how many failures were on Dino vs Synthetic. There used to be fear of using synthetics for seal leaks and all. Surprisingly enough I guess the G37s were factory filled with Dino Oil.

They used Synthetic Blend on it. They are telling me that the tolerances of the car wouldn't be good on synthetic. Esp on a higher mileage car.

 

Is it just me or has anyone else noticed that no turbo VQ37's owners have experienced the timing gasket failure? I've asked multiple turbo G37/370z owners now and not one person went ahead and replaced their timing gallery gaskets before hand, and none of them have had an issue with it. You would think those car's would be more prone due to heat and higher oil pressures.

 

Oil pressure doesn't change when you go forced induction. Still using the same pump. Turbo owners probably change their oil fairly regularly and use coolers too, more capacity and lower temps.

 

So having lower oil temps would prevent the paper seal from disintegrating I guess?

 

Honestly I don't know if one can draw that conclusion one way or the other. Too many other factors.

 

Way too small of a sample size for those with FI.

 

I will keep my fingers crossed that I never have this issue. I have had the car since it had 8k miles and always used mobil 1 if that makes any difference. Sad part is my car does not have a warranty as it has a salvage title. So I would have to do the repairs myself. Sucks but I have a shop so I can handle it.

The one thing that I cant see happening is blowing the steel gasket. The only way that would happen is if the cover is warped.

 

Went turbo (2008 model), had gasket replaced with newer version while engine was out. Old gasket was found to be cracking and leaking. Showed no symptoms.