It's, I think, a few issues:
Originally
1] Vibration issue coming from u joint and possibly other things
2] oil pan issue with oil leaking in thst area.
Kept taking back to the same place or 2 without getting issues resolved.
Then it the driveshaft let loose and destroyed the 3rd member gas tank transfer case and transmission.
One of the 2 shops replaced all those damaged components with used parts that could be leaking.
I was razing the OP with keep going back to the same places without getting the issue resolved for warranty repairs and ended up in a catastrophic failure.
As I would never go more than 3 times for the same issue anywhere because they obviously can't fix the issue
Now you 2 are all caught up.
It's really a shame, and I am wondering if it was not only the u joint and they fixed it, not checking the Pinon bearing. Thus, that may have failed and took out the u joint again. However this last part is just a guess..
And maybe I missed things lots or reading on this one...:/
Sent from my SM-A536V using Tapatalk
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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread:
https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer:
https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information:
https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html