U-joint bolts keep coming loose. What's up?

[jwrape]

This is the second time I felt a vibration, check the U-bolt strap bolts to find them loose. What do I have to do to keep them tight? Should they have lock washers on them?

[Jeffy]

First you shouldn't overtighten them.  This is one of the main reasons for driveshaft failure. They only need something like 14ftlbs, I think. (check FSM)  Then put blue locktight on them.

[jwrape]

First you shouldn't overtighten them.  This is one of the main reasons for driveshaft failure. They only need something like 14ftlbs, I think. (check FSM)  Then put blue locktight on them.

Yea, might have to get some locktite and hope that works.