Sounds like transfer case problem.

 

Internal parts not getting along like they should I mean.

 

I get this if i turn sharp while in 4wd, is that normal? i noticed both my half ton chevy's used to do it a little at sharp turns but they were IFS, this is first solid front axle truck

 

If you are on a solid surface then yes, tires need some give and slip if using 4wd. Can be worse in 4Low.

 

U joint.


2008 MEGA CAB 2500 6.7, Mini Max, Full Delete, 4" TBE, Raptor 150 on the Frame Rail, Fuel Tank Vent Mod

 

buy from a dealer or private party? how long ago?

 

Sharp turns on non-slick will cause binding in the driveline, that is normal. The popping that the OP has is a transfer case issue. Chain in the case has most likely stretched and will need a rebuild or a new t-case. To explain it better the popping and jerking is almost as if you were riding a bicycle that was in between gears. The chain is stretches so when you torque it, it rides up on one of the gears and then slams back into place. It will do this every time you put it in 4wheel. Since its happening in both 4H and 4L I would venture to guess this is the issue. You can have someone put a scope in the fill plug and look for you. 4WD will work but it will make tons of noise and will wear out the other parts in the t-case. When the chain does this it pulls the gear to the side and can wear out bearings on teh gears in the t-case or take teeth off the gears. Better to get it checked out and rebuilt if needed.

 

Thanks for the info, I guess I will get the Transfer case checked out. This sounds like it could get expensive...

 

I would check the u-joints in the axle shafts before digging in to deep to transfer case if they were locked up it could cause same problems just a thought


Sent from AutoGuide.com Free App

 

I was just driving on the icey roads when I heard a "bang bang POW" and truck locked it down. Luckily where I was, the ice had almost melted down to pavement in the ruts and so I skid to a stop involuntarily. Now in 2wd, truck makes a constant cycling noise that I can only describe it as if the mud flaps were rubbing on the tires. In 4wd, it makes the noise only when you let off accelerator. No noise in 4wd when depressing accelerator. WTF HAPPENED!?

 

Check your axle u-joints. Seen them spread the yoke apart enough to stop the truck before.

 

Thanks bloyet. I checked them when it happened and didn't see anything crazy. I'll take closer look. Any other ideas?


Sent from AutoGuide.com App

 

all the joints appear to be tight? drive shaft joints?

if all check out, you may have a problem in the transfer case.

 

All ujoints were fine. I'm guessing it is in the front diff. Drive shaft or gears in pieces binding up. In shop now. I'll find out soon


Sent from AutoGuide.com App

 

Wow...... Pinion bearing fused to pinion and spun the race out of it. Whole new front diff in my future. Sh!t


Sent from AutoGuide.com App

 

WOW!!! Low on oil or something? Any idea what happened to cause it?

 

Nope not low on oil, no leak, no visual issues from outside. Apparently there is an issue with the way the housings were cast. Makes the pinion wear prematurely. There was supposedly a recall on the 08/09 ones. Nothing you can do to prevent. Just a f'd up design


Sent from AutoGuide.com App