loud popping, banging, clanging when in 4x4

[blt93932]

1999 f350, Had to put the truck in 4 wheel drive today, turned the wheel to the left and had to give it more gas than usual to go, when it did go it made a loud pop and bang, but it moved. It doesn't make any noise when going straight. It did turn my wheels when it made the noise though, turned the steering wheel right in my hand.

Any idea what this could be? I bought the truck used about 6 months ago, never really had to have it in 4x4, the other time I did have it in 4x4 I didn't notice the bang.

Thanks guys.

[Fireman40]

I am going to guess that you have a bad u joint on your axle. at first i was thinking hub but you say it only makes the noise during turning.

[jimmyp]

U got a shot axle joint probly. jack the front of the truck up and roll the wheel, if the axle joint is bad itll look just like a junk ujoint. not really a big deal to fix.
Jim

[Jarrod B]

was this a full turn to the left?

[blt93932]

It doesn't even have to be full lock, just as I'm turning giving it gas. I'm actually not sure about turning right, I only had to turn left to get in, and cut the wheel left to get out.

Somebody told me ball joints, possibility?

[Jarrod B]

if its ball joints, its gonna do it in 2wd mode as well. did you also checked your oil level in the transfercase?

[blt93932]

Not happening in 2wd.

Haven't check oil level's yet, just happened to me last night, thought I'd pick some brains. But I will check all these things!

[Jarrod B]

also check the yokes in the front axle and like jiggle em to see if they got play.

[blt93932]

And if they do have play?

[Jarrod B]

could be bearings. there was a thread on here a few weeks ago that talked about that. some is ok but a lot is bad. im not sure but just threw that outthere since im tryin to think what else could cause that noise.