4X4 not working part of the time.

[2shus]

I have an 81 Bronco with automatic tranny and manual shift 4X4 and manual lockouts. Sometimes when I go thru deep snow it works great and other times the front wheels don't seem to pull at all. I got stuck a while ago in some snow that was not very deep and the front drivers side wheel that I could see was not turning most of the time and I don't think the the pass side was either cause when they are turning I can see snow flying up from them. Then all of a sudden she pulls out of the snow. Are both front wheels supposed to pull when it is in 4 L or 4 H ? It was just acting like a 2 wheel drive. This happened to me the other morning and same deal it just suddenly decided to really kick in. It didn't seem any different in 4 H or 4 L. Any help would be appreciated, it was an embarrasment to be stuck twice in such little snow with a 4X4.

[gbic1]

Sounds like maybe your shift fork in the transfer case is worn and not fully engageing. Those transfer cases are good for that.

[KELLYK4K]

My 4wheel Drive Just Stopped. There Was No Warning, It Worked One Day And The Day It Was Out. My Friend Said That My Vaccuum
Valve Was Off. Does That Have Anything To Do With My 4wheel Drive??? I Know Nothing About Cars, So Bare With Me Guys...okay?

[goinbig]

when you are in 4wd (both hi and low range) and the tires are spinning (not getting traction) only one in the front will be spinning. In the back, only one will be spinning, unless you have a some sort of a locker.