Dunno if this is normal with other owners but when you start the car in the morning and you let it warm up until tach drops to ~1k rpm. I can feel small vibrations throughout the whole car. I have a 6mt if that matters but I wanted to know if this is the cold start problem that is corrected by the cold start tsb. Your help is great apprieciated.

 

https://g35driver.com/forums/v36-diy...le-bodies.html

 

Thanks for the link but my idle is not fluctuating. It just shivers around the 1k rpm only on cold start idle.

 

^theres a TSB for that, check infinitihelp for something around the lines of "cold engine start rpm" or something. and also clean you TB, i had the same issue and this combo did the trick.