traben27

My transfer case shifter makes this noise/vibration that sounds/feels almost like its touching something that's spinning very quickly. If i push on the shifter it dampens it a lot, but it i can still hear it. I also noticed that its pretty much nonexistent between 0-30, but once i hit 30 it gets loud enough to be heard over my music. It tends to get much quieter after I hit 40-45 but its still somewhat loud. I searched and there wasn't much on the topic except relating to a 3rd gen. What the heck is going on?! I need to fix this before I take the 1200 mile trip home from college in 3 weeks.

dr-dirt

is your tranny manual or auto?

traben27

oh sorry shouldve specified...its an auto...156xxx

traben27

buuump

machabees

Feedback from a bad U-Joint???
Maybe??

4Crawler

iTrader: (3)

Is it a shifter that comes directly out of the t-case or is it one that connects via linkage under the truck?

AxleIke

Pretty sure its got linkage, but not positive.

You should hear those bad boys with twinsticks and a crawler. LOL. You'd feel a lot better about it!

traben27

Its got linkage under the truck, i've checked it and there seems to be very little play in there, nowhere near enough to cause this. I'm wondering if it has something to do with the tranny. Here's what I noticed while driving today since I actually got up to 45 mph (most of the speed limits around here are 35).

0-20 = Nothing Really
20-30 = Steering wheel (or perhaps the whole column) begins to shake up and down (bouncing I guess you could say) and gets faster
30-40= Shifter begins to make loud noise like something is causing it to vibrate. once i push on it, it dampens the vibration in the shifter and the noise quiets.
40-45 = When I'm on the gas I get a loud, low pitched vibration/humming that you can feel throughout the whole truck. as soon as let off the gas, it stops.
45+ = I don't know, I hardly ever get up that fast haha.

Now that I typed that all out, for some reason I'm liking the u-joint suggestion.

traben27

Well, I just climbed under there and noticed I have some fluid residue on the back of the tranny right where it meets the u-joint/driveshaft...this doesn't sound so good.

4Crawler

iTrader: (3)

Check the output flange from the t-case for play. If found, unbolt the end of the drive shaft and snug up the nut (30mm staked nut) and see if the play goes away. If the leak continues, replace the seal.

traben27

Hey thanks, I'll try that asap. I hope thats all i got going on.

Did a little more research and its amazing what you can find when you put the right words in...
https://www.yotatech.com/forums/f116...-flange-92457/ ... sounds very similar, especially when its mentioned it was loose enough to leak.