Hey all... Just got an R50 last week. A 2001 (not a 2001.5) model, SE 4x4 stick shift. I like it well enough so far, haven't driven it but once. It needs some repairs before it can be depended upon. I'm really a Toyota guy, daily drive a Tacoma and work for Toyota. This is my 3rd Nissan, had an 87 300ZX with the VG30 and had a 1995 Maxima with the VQ30. Couldn't pass up this Nissan, and the VQ35DE is a fantastic engine. Looking to DD and use it for light wheeling/camping in the future. In the process right now of doing the brakes, wheel bearings, it is having some weird problem with the serpentine belt I haven't figured out yet...etc.
-It has a check engine light which is P1490. I've read this is a fairly common issue with the Altima's and Maxima's. (Any TSB's?) Has anyone else had this code with a pathy? If so, which is the most common culprit? Have seen the bypass valve, the cut valve itself and then maybe problems with the 12v source for the valve? Just would like some insight before I take them out.
I've read the VQ35 is an oil burner, does synthetic oil make this worse? I haven't had mine long enough to know how much it burns if any at all. 195k on the odo, so I won't be surprised. What brands/weights seem to work best and minimize this issue? Usually use Mobil 1 for synthetic duties and Rotella for conventional.
On that same note, it has quite a few oil leaks. One of them being both valve covers, going to do the all the gaskets on the top end. I've read about the VQ VC gaskets, and its confusing. I never had to do them on my VQ in my Maxima, but are the gaskets not replaceable? Some people say the perimeter gaskets are replaceable but not the plug seals.... some say nothing is replaceable. I'd really like to do the plug seals, I've read about the plug tube filling with oil on these motors. Either way does the WHOLE valve cover SERIOUSLY need to be replaced to do all 6 plug seals and the perimeter? That seems ridiculous. If that is the case, any body come up with a way around it...A seal from a different motor?....LOL.
Anything else I should replace while I have the serp belt stuff off and the top end apart?
I appreciate any help any body could throw my way, been lurking around for a week or two now and this seems like a great place... Looking forward to learning more!
-Jay