Slack in driveline

[rsm688]

Okay guys I have noticed that I have a little slack in my driveline it seems. When slowing down/braking and then giving it gas again sometimes I feel a little clunk, almost as if there was a little slack in the driveline and when I put it back under load with the throttle it has to catch back up. I thought bad U-joint at first but they all seem fine. So my next thoughts is transfer case or axles. My transfer case was inspected by a transmission shop 3000 miles ago when the shift fork was replaced and they said everything looked fine in there. Could worn gears in an axle cause some clunking like this? I also wasn't sure if the load distribution in 4 hi with the power split betweeen the front and rear might be related to it as well.

Any help would be greatly appreciated.


Thanks,
Spencer

 

[napalmsticks]

Okay guys I have noticed that I have a little slack in my driveline it seems. When slowing down/braking and then giving it gas again sometimes I feel a little clunk, almost as if there was a little slack in the driveline and when I put it back under load with the throttle it has to catch back up. I thought bad U-joint at first but they all seem fine. So my next thoughts is transfer case or axles. My transfer case was inspected by a transmission shop 3000 miles ago when the shift fork was replaced and they said everything looked fine in there. Could worn gears in an axle cause some clunking like this? I also wasn't sure if the load distribution in 4 hi with the power split betweeen the front and rear might be related to it as well.

Any help would be greatly appreciated.


Thanks,
Spencer

I just replaced all of the bushings on my front axle (Cross member and front diff bushings) and my drive train noise is pretty much gone. I had clunking when shifting from reverse to drive or drive to reverse and also starting after braking. I used this set for all three bushings:

http://www.amazon.com/gp/product/B00165ZXZ0/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

 

[rsm688]

Thanks napalm, my entire suspension is brand new including my diff and crossmember bushings. This isn't so much of a heavy diff clunking, its more being able to feel in the driveline that it has a little slack and feel it catch once it gets going again (hard to describe what I'm trying to say). It's like when you're riding a bicycle and coasting when you start pedaling again it takes a half second for the chain to catch and get going again. That's what I'm feeling. A little play and when slowing down for a turn and then hitting the gas again I can feel a little half second slack then a very slight clunk as it catches

 

[High Five H2]

mine does the same thing, and it's just like you describe. I let off the brake, hit the gas, and it feels like there's a slight delay, and then it feels like a *thunk* and then it goes.

 

[rsc]

Its a 4wd, some slack is perfectly normal. It can seem bad if coming from a passenger car or even some trucks. Loud clunks and pops are not normal, but a little "extra" slack in the driveline is normal.

 

[3rdH3]

I have owned 3 H3's. Two were bought new and the other had less than 6K. They all have done it to some extent from day 1. I would say normal also.

 

[CaseyS]

Check your front propshaft. I would have guessed front diff bushing first, but you have that covered.

 

[amrg]

I have a similar issue, Im currently replacing the trans mount since its worn badly, ill let you know if its solved in my case!

 

[woodwardsh3]

I just replaced all of the bushings on my front axle (Cross member and front diff bushings) and my drive train noise is pretty much gone. I had clunking when shifting from reverse to drive or drive to reverse and also starting after braking. I used this set for all three bushings:

http://www.amazon.com/gp/product/B00165ZXZ0/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

Is this for a H3 or H2 as they look like leaf spring bushings