1. No the vehicle will stay in 4WD untill you put the selector arm into 2WD
2. I think the Manual says the axels are locked togather I believe there locked by a chain. My 93 had to have it replaced at one time long ago.
If you have a leak in the vacum line I would think it might loose pressure. But it is not moving so the gears will not seperate, and also when you start it back up it will gain vanum.. I also theought about the wheele Spin I can say I don't know about that the more i think about it I know they are connected by a chain, and it would only make sence to have them spinning at the same RPM, but what does logic have to do with it.
Well here's the breakdown, You got one engine that turns one transmission that turns the transfer case which turns the axles. The axles should have the same gear ratio. If you or some previous owner changed one of the axles to a differant for whatever reason and didn't replace it with the same ration.....One would be going faster then the other. In you case the rear seems to have the numerically lower axle ratio. Check it out.
No, because the vacuum only moves it from 2 to 4 or 4 to 2; it doesn't hold it in 4 or hold it in 2.
2. In 4W High or low do the front tires get the same rpm's as the back? (because the back ones spin way more)
Yes, unless like mentioned someone chaged yer gear ratio in one or the other axle; highly unlikely. You would really know it on dry pavement; one or the other axle would be pushing the other one and it would feel like you were driving through glue. What you're experiencing is the open differential on the rear; power goes the path of least resistance. Meaning it'll spin the tire that's not sticking.
I suppose I could have replied with just one post, huh? (I'm a post whore.)
Life's too short; so's my Jeep.
no lockers will not change the speed the wheels turn!( front versus rear) it will not slow the rear axels, the speed diferential you are talking about is minimal, as a mater of fact front tires should turn faster than the rear. several diffrent things can be causing this ( rear end sliding on you)
1 led foot causing light rear to slide.
2 just light in rear end when making turns and you are not hooking up on slick
3 bad tires in rear cant gain traction.
if you are running wide tires you will have more of a tendancy to slip on snow
If you want your problem to stop, put a sandbag or two in there and slow down. and see what that does. (before you start spending thousands).
lockers will make rear tires turn the same ( like full tim posi) and if you are losing traction in the rear, it will be the same results. just ideas you could check! good luck.
92 wrangler yj 4 in lift, sye, posi lock, 35x12.50x15 on outlaw rims. much more to do!!