Ok so I had a problem where my car would shut down randomly while driving due to the battery not having charge and after a while I found out it was cause I was driving with half a serpentine belt on when I replaced it and reversed the belt shredded and my friends said it was my tensioner pulley can someone help on how to replace that

 

Car only has 1 belt. Tensioner if it's bad would let belt go loose. Your alternator seems to be the issue.

 

No my tensioner cuz my belt shredded when I put the new one in there’s barely a belt for the alternator and I spun the pulley when the belt was off alternator is fine had it tested multiple times I just wanna know how to replace the tentioner

 

Here you go:


Very easy repair. You may want to download a copy of the FSM (Factory Service Manual). It will come in handy:
G37 FSM NICOClub Archives

Hope this helps. Good luck.

 

Tensioner is held on by 2 bolts