GTP Consistent Weird Shift Into Overdrive (4th) Only When In "D"

[iseektruth]

That sounds exactly like what's going on.

hmm. Maybe I should look at my muffler. I thought the noise was just the loud exhaust cuz none of the mechanics who have looked at it said anything.

[Scottydoggs]

thats a lot of good maint stuff there, old folks rule, they take care of their stuff to the end, well most of em.

that 4 th gear hub, is a great upgrade too, the old ones strip out and you lose 4 th gear, so you look to be in good shape, id hold onto it. just continue to take care of it.