92 3VZE. CV joint on the differential side pops loose. The large diameter end of the boot, that goes over the CV joint itself, not the narrow end on the shaft. The boot is still in good shape. Originally noticed the problem and cleaned everything up, and tried to secure it with a large radiator hose clamp. Popped off within a week. So replaced the entire CV drive shaft with all new. That boot also popped off, in the same spot.

It's happened twice, once with new parts. That sounds like a systematic thing, but I can't think of anything that would cause this. Assuming the boot is designed so that it can accommodate the entire range of motion of the CV joint? If so, there's no way to stretch it past it's secure position.

Anybody else run into this problem?

 

Are you lifted? too much angle on the cv's will cause this.

 

if not lifted, than Non-Toyota boot kit?

 

Not lifted. Whole new axle, no boot kit. But that question set me on the right track. Started wondering what could increase the drive axle angle, and discovered that the big bolt through the front differential mount was gone. The front diff could rise, or "lift" about two inches off of the frame mount. I'm gonna assume that's what was causing the problem. Additionally, I had a fan shatter, and occasionally get a grinding noise when torquing in low range, from the fan hitting the shroud. Thinking maybe the front diff was pushing up on the engine block and shifting it on the engine mounts. Have to go 4-wheeling to find out.

Thanks for the help. That's why this forum rocks!

 

Good catch of the diff bolt - that's probably the cause of your CV boot failures. However, I don't think the fan can twist into the radiator shroud unless the engine mounts themselves are also faulty. Put the vehicle in 4lo, 1st gear. Raise the hood, hold the brakes tightly, and watch the engine as you slowly let out the clutch. If the engine lifts or twists significantly, your engine mounts need attention. You can also look to see if your shifter levers move side-to-side when doing this test.