Ok, I thought so. I wasn't sure if you'd changed anything.



I strongly doubt very much run out has anything to do with this. That would be a constant and accel/decel wouldn't make any difference.

IMHO, you need to be talking to someone(s) else about drive shafts or have someone else do them for you. This isn't that complicated and from what I've read of your thread, you're having to jump through a lot more hoops than you should.

What's probably the issue is you have one or more CVs that are in need of rebuilding. However, from your description, it sounds to me like you have one that's getting close to needing rebuilt and you have one drive shaft that's either out of align or not aligned properly.

Since you didn't have the problem originally if I remember correctly, its probably going out of align. By 'out of align' I mean that your pinion is shifting enough to throw your drive shaft angle off.

That would explain the decel vibration but no cruise or accel vibration, because when you take your foot off the brake, the pinion is going to try and rotate the opposite direction from what it would normally do.

That means pinion angle wasn't set quite correct originally OR it was set right on the hairy edge and you've had enough wear and tear that the pinion angle is shifting JUST ENOUGH now that you're getting vibration. Over time this can easily happen - its how I know when my leaf springs are close to needing replaced.

A CV just starting to need rebuilding will give you that steady low level almost untraceable constant vibration. Put the two together and that sounds like what you described. Something else, too, if someone didn't rebuild a CV correctly, you'll get the same thing.

Quicky test - pull the front drive shaft, drop it in 4HI, and drive it around and see what happens. Replace the front and drop the rear and repeat. That'll tell you straight up whether I'm right or not and which ones doing what. Obviously, make sure you don't do this in AWD mode.

Edward