I changed my transmission from my original 05' to a 2007 model because I had a clutch let go.
I replaced my single mass aftermarket flywheel with a dual mass and replaced the clutch set etc... Put it all back together and now the car will barely idle at 525rpms and won't excellerate at all. If I try to push the pedal it cuts off. I changed out the crank position sensor but still no help. Checked for disconnected plugs or anything
I have been all over it and can't find why it doesn't want to run

HELP!!!!!

 

I figured it out, the Flywheel was not on the right pin so I had to drop the trans again and reset the flywheel. Now it runs like new

 

Its good you figured out the problem! I guess you have no problem spinning a wrench! Thats a good thing to be able to do!

 

Yea, this is the 4th time I have wrenched on my G35.
I bought the car with 113,000 miles on it, at 131,100 the Harmonic Balance Pulley spun off while I was hard accelerating and spun the timing chain and destroyed the entire top end. Every valve was bent and I had no compression.
I pulled the engine and tranny and swapped in a new engine with 3k miles on it.





NEW motor from Infiniti







Then around the first of Aug 2013, my throw out bearing went at 216k miles on the car (85k on the motor), I replaced the clutch, pressure plate, throw out bearing and pilot bearing. The first or second time out driving after the re-install, something sounded like it came loose and I had a vibration in the tranny. Unfortunately, with my crazy health I had some issues where I couldn't pull it back apart right away, so I drove it for another 4k miles with the vibration.

This weekend I finally had the time and had collected a 07' Tranny with 57k miles and a new clutch kit.


When I pulled it apart I was mortified that it was still shifting.
There were two holes and pieces of the pressure plate all over the place. I found my vibration.








The forth time was pulling it back apart and re-positioning the flywheel on the correct pin hole to get it running.

So now I have replaced the aftermarket 14lbs single mass flywheel with a OEM dual Mass flywheel and a new clutch kit that the place sent me to replace the faulty one. I guess I just got a fluke messed up pressure plate from them the first time, but I did notice that the first clutch disc had 6 springs in it and my new one has 4 bigger springs in it this time. Not sure what that does or affects but the new tranny, flywheel and clutch kit feels like a new luxury car again. VERY easy to shift and almost seamless shifting.
Really stoked about it being back together right.