U joint vibe, solved

New member here. Just wanted to address the low “sub woofer bass” sounding vibration that often comes from the mid-back of the vehicle. I just replaced my second u joint at the rear diff. In a year. For the same reason, 60mph + vibration. After close examination with the micrometer I found that the aftermarket u joints come with .006” thick c-clips & the oe Toyota clips are .008” thick. This creates a .004” gap for the brand new u joint to offset thus creating the vibration. I was thinking I had a bad driveline, glad I noticed the difference before spending $ on a new driveshaft. Anyway I hope this helps someone in the future. I sure wish I could have found this info somewhere a yr ago.

 

Yeah, another reason not to cheap out and always go with TOYOTA parts.

I also found that the o-rings on the fuel injectors are unique and you can't get the correct size at the local parts stores.

I see aftermarket parts as usable only in emergency situations and they'll need to be replaced.

 

The above two Posts are excellent examples of how a Forum like this can be so useful. Thanks for posting.