I'm working on a 2007 g35 all wheel drive and it kicked code p0345 and started running ruff. I replace all 4 cam sensors and crank sensor with Denso sensors and it still does the same way and kicks the same code. I pulled the spark plugs and the 3 plugs on the driver side were gas fouled the passenger side was fine. I replace all the spark plug with denso iridum plugs. And cleaned both throttle bodies. And it still runs the same way. I did the edu reset several times with the gas pedal and disconnected the battery also. And I cleaned the mass air flow sensors. Please help. Thanks.

 

is there any dealer techs on this forum you can help me please

 

Bobby, have you been through this?

http://infinitihelp.com/diy/obd_code..._infiniti.html

See the tech note:
"Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code."

Also, it's possible you could have more than one problem going on there. Many people have had trouble with getting the ecu to relearn after the throttle bodies were cleaned.

 

I've also changed the crank sensor and the battery with an interstate battery.

Took it to the dealer today and they said that the drivers side cam is stuck at 64° and that it would need to be replaced. The cost would be $6000.00 to fix it. I told them I'd do it my self. I'm gonna try to run some Sea Foam in the engine oil to see if it will free it up.

 

Yes I've read that already. Thanks.

 

You verified all the contacts and connections are good to the sensors?

 

Yes sir I did verify that. I even tried bending the wires to each cam sensor and it still ran the same. The tech at the dealer said that his computer showed the the intake cam on the drivers side was off by 64°. I'm running a cycle of sea foam in it now to see if it will free up the intake cam.

 

That's an enormous amount for the cam to be off by. Perhaps it's an issue similar to the one mentioned here by infinitidude: https://g35driver.com/forums/g35-sed...ml#post6934796
(post# 117), although he's actually referring to a DE motor if I'm not mistaken, he does mention it occurring in a Q56 as well.

In any case, and on a side note, I hope you realize you could buy a perfectly good used motor and have it installed for less than $6K.

 

The dealer want $6400.00 for a used motor installed with 70,000 miles on it. If the sea foam don't work I will replace the cam wheels and chains my self. Ive been a Honda tech for 25 years I sure I can do the work.

 

At what mileage do the timing chains have to be replaced? The car has 110,000 miles on it and I have to replace lt and rt intake vtc cam wheels due to the lt one going bad. should I replace the timing chains too? The dealer is also recommending to replace the exhaust cam end cover plates. Do these go bad? They are also saying to replace the timing cover. Does this have to be done since you can buy the oil gaskets that blows out separately now?

 

Timing chains last a hell of a long time (they're metal); not at all like a timing belt that wears out and needs to be replaced routinely. You could go 2-3 hundred thousand miles on a chain and never have any issues. The tensioners may wear, but even they are far superior to a typical timing belt. I can't speak to the other bits, but if I were in there, I sure as hell would swap those damn paper gaskets out before they blow. You don't ever want to have to go in there twice!

.02

EDIT: 2-3 hundred thousand miles

 

I'm hoping infinity guy will chime in on this. I really don't want to buy parts I don't need to replace. If I had to buy everything the dealer said that they were gonna replace it would be over $3,000.00 just for parts. I took pictures of the repair order and parts list but I can't figure out how to post them from my HTC 1.

 

Sounds like the cam sensor is doing it's job and you need to have some head work done

 

According to the dealership that not the case. The tech at the dealer is stating that the LT VTC cam sprocket is bad. He recommending to replace both VTC cam sprockets, VTC covers, inner and outer timing chains, timing chain tentioner , inner timing cover, water pump and seals.also reprogram the computer.

 

I would ask them to clearly articulate what is required for the fix vs. that which is simply recommended, as they're obviously intending to have a field day with premature parts swapping there. I'm surprised they didn't mention the in-cabin air filter too.