So my 2005 TC's engine will buck when its cold, or hard launch from 1st. I recently did the window weld in my front mount.

While doing this I noticed that the top bolt that goes into the transmission has a chunk missing and I can't torque that bolt down. What can I do to lock that bolt down in there ? JB weld?

 

pull the bolt and replace it

 

You probably damaged the threads and broke off part of the boss. If the bolt was loose to begin with this could have happened very easily. Or if you tightened it down too much.

The best repair is to use a known good part such as another transmission, but since you are asking about using jb weld that probably isn't going to happen, best thing you can do is to helicoil the threads if you damaged them. Use a new bolt with a lot of red loctite and pray you never need to remove it again.

 

truth^

 

@seattle_Tc I’m sorry you’re having problems with your engine. You also said there’s a chunk missing in the transmission. Have you tried contacting your local Scion dealership? If not, you may want to try seeking them out as they would be able to help you figure out the problem. I hope this helps.

I'm sure you and everyone here already know where their local dealership is, but just so you have it - you can locate your closest Scion dealer by using the following link:
http://www.scion.com/#dealer

Good luck!

-Paul
paul@americanpopdigital.com
I work with Scion, see full disclosure here - http://cmp.ly/4/qrbca1