I recently pulled my transmission to replace a leaking rear main seal. After reinstalling everything the car seems to run fine, but feels like it hits a revlimiter at 2500rpms. If I hit the revlimiter a couple times it will throw a check engine light with the following codes:

P0345 - CAM Position Circuit Malfunction
P0011 - Intake Valve Timing Control Performance Bank 1
P0021 - Intake Valve Timing Control Performance Bank 2

I assumed maybe I'd missed a harness connector or a ground wire somewhere, but crawling under the car I can't see anything out of place. I checked connections for the cam sensors, which looked good, and were never unplugged during the process. I tried to trace the cam sensor harness, but it looks like it runs around by the intake and toward the front of the engine away from any work that was performed.

Anybody got ideas or suggestions on things to try? Or ideas on where I may have missed a connector? I've cleared the codes a couple times, let it sit with battery disconnected, and the issue comes back right away. This is a new issue and nothing else changed on the car, so I assume it's a result of something I screwed up in the process of swapping the rear main seal.

2004 G35 Sedan
6sp Manual
Uprev Tuner

 

Do you have a 6MT or AT, did you get the alignment pin on the flywheel lined up properly. If your alignment pin was recessed like mine you could actually install the flywheel improperly.

http://www.techshopmag.com/tech-tip-...-installation/

 

Son of a....

Thank you so much, that has to be the problem. Guess I know what I'll be doing this weekend.

 

Just wanted to come back and confirm the issue was from the flywheel being improperly indexed to the crank. Thanks again to cleric for bringing the issue to my attention. Car runs great now, nothing like learning something the hard way.

When researching the issue I read several comments about this being "difficult to do", or even "impossible". My crank had a pin in it to align the flywheel. The flywheel had 7 indentions in it where the pin could sit, and one blank spot that would prevent the flywheel from sitting flush. Properly installed, the blank spot sits exactly opposite of the pin on the crank.

Done completely random there's an 6 of 7 (86%) chance that the flywheel gets installed wrong. From other feedback I've seen I assume they changed the flywheel design later on to make it idiot proof, but it's at least something to be aware of if you're ever pulling a flywheel out.

 

Glad that all worked out for you, when I did my clutch it was almost complete luck that I noticed the alignment pin and went to actually read the FSM. I figured after maybe 50+ clutches that I could just wing it