will go forward in 4 lo, but will not go in 4 hi

[pjmjr508]

my wife the feels the same, and lets be real. we would lol.

[Adondo]

I finally saw this thread. I hate to be the bearer of bad news, but... I think you broke a front axle shaft.

Low range locks the differential center, hence you can move. In high range, the center is unlocked. Even with QDII, you need wheel sensors for the computer's input, and the free spinning axle won't trigger that since the sensor is on the back of the brake rotor, so you won't get a clutch lockup in the differential. And, all the torque is going to a ''dead zone'' with a broken axle, so you don't go anywhere.

[pjmjr508]

that makes complete sense.

I think you talking about the axel half shafts right? If so I was doing a quick search and found these. http://www.autopartswarehouse.com/co...hhZnRzKQ%3D%3D

These are what your talking about right? If so any input on which to pick. The part I am confused is why the reman is more expensive than the new, they look the same other than the mileage. If I am missing something please let me hear it.

Also if the cv axels are the weak point, do they make stronger ones so I do not have to worry about this happening again?

[Sal-XK]

I think he is talking about the propeller shaft which is the drive shaft from the TC to the front diff.

[pjmjr508]

Sal I don't think it is that. My right foot is still bandaged up from foot surgery so have not dug into it yet. but have seen this, when in 4 hi & in gear the half shaft spins @ the cv joint from the tc to the cv joint. the shaft on the other side of the joint does not move (this is all on the pass side)

thats my guess right now, once I have walk more then a few steps before popping perkecets like candy I will be able to tear in to see.

[Matt]

You guys need to work on your terminology because these posts are confusing as hell to follow.

You have a transfer case. You then have a front driveshaft that connects the transfer case to the front differential. Then, on each side of the differential you have half shafts (commonly referred to as CVs) that provide power to each front tire.

Broken CVs are common. YOU DO NOT WANT STRONGER CVs!!!! They're cheap and easy to replace. If you strengthen the CVs, you'll break the next weekest link; the differential.

With my previous vehicles I used to carry around a spare CV. Though they were much easier to replace than the XK since they were bolted to the diff.

[Sal-XK]

I think the SM calls the shaft from TC to the front diff the propeller. Then the half shafts\CV shafts from the front diff to the tires. I'm a little confused by

half shaft spins @ the cv joint from the tc to the cv joint

this as well. But also keep in mind that the TC operates at a 48\52 split in 4HI and will lock the diff in 4HI if wheel slip is detected. So why does it not move in 4HI but does in 4LO not sure myself we'll just have to wait and see when he can move around again and take a look.