Quote Originally Posted by BigSwede View Post
I'm not sure the "grinding" you describe is a problem. Lots of vehicles make extra drivetrain noise at light throttle at highway speeds, including my Trooper.

AFAIK Toyota doesn't have lifetime drivetrain warranty, for sure my RAV4 doesn't...unless that is something special to the FJ.
My VX also had a hard to locate grind when driving with no load (Accel. or Decel.) and it turned out to be the front drive shaft had too much angle after the lift. An easy way to check it is to pull all the plugs off of the TOD module under the pass. seat and drive it. You will lose ABS when unplugged so don't panic. What I did to make it easier to live with day to day was to put a TOD disconnect switch wired to a 10 watt resistor to simulate load. There's a good write up for that on here somewhere. You just have to remember to turn the TOD back on in the slick stuff, that short wheelbase can swap ends REAL quick! Another thing to check for driveline noise in the rear is the clutch packs for the LSD. I toasted mine rallycrossing for a few years and had some noise there as well. Don't know if your mechanic has actually opened the 3rd member yet or not. Feel free to call me and we can talk it over and see if we can come up with a solution or suggestions for your mechanic.

Toyota warranty on the FJ is 3 yr /36K bumper to bumper and 5 yr / 60K on the drivetrain. You would be looking at mid 20's for a 4x4 basic package new. 'Course I've pretty well modded my warranty away by now.