2001 Toyota 4Runner 2001 4Runner loud vibration hum noise a

Hi KHLow2008,

Thanks for your reply. I replaced 4. When you say have the u joints checked, do you mean checked for proper installation? Could that be causing the noise?

I took the car in and mechanic says drive shaft needs balancing - does this sound like something that was caused as a result of the u joints being replaced?

Also, is this critical or can it go if I don't mind the vibration.

Dealer mechanic quoted $175 for parts but said they'd need to keep the car for a few days as it needs to be sent out to a specialty shop.

Thank you!

My 2001 4Runner is doing the exact same thing. Did you resolve the problem. I have never replaced ujoints. What are the symptoms?

Would I notice this vibration at all speeds or just high speed?

Hello,
Thanks so much for the input & suggestions.
After having it checked - dealer mechanic says that my drive shaft needs balancing. Interesting is that the same dealer serv center replaced both my front and rear drive shaft u joints 3 months ago and now this problem but they insist it's not related. However, they offered balance the drive shaft without charging for labor - parts only - at $175. I don't know how to verify if this is really the case or if they did a poor u-joint job and that somehow caused the drive shaft to go off balance.
I wonder how much $ I'll be saving on the labor alone vs going to a different shop where they will charge for labor. Would appreciate feedback on the approximate labor costs to remove the drive shaft and balance it - approx how long would something like that take? An hour, or more like 4 or 5? Thanks much!