vibrations like crazy high rpm

[brian102]

I never let my car rev above 3k because i get this terrible grinding vibration noise. Some people mentioned balance shafts i dont know if car still has them or if belt has ever been changed how can i check if they are still there. What else could it be. Has 108k miles. Its a bad enoiugh noise where i never rev it above 3k or it makes me nervous ill try and get a video of it. Thanks

 

[g4ebguy90]

Man, same thing happened to me. I would pull the pan and look for balance shafts and to see if there is any play were the bearings are.

 

[brian102]

I was affraid of that. So they are inside the oil pan no visual check from outside

 

[g4ebguy90]

Well you have to pull the pan to see them up in the block. But you look for metal in the pan.

I believe you can possibly remove the engines, timing belt cover to see if yo DO have balance shaft belt installed.