My rear end is staying locked in at all times. Its not kicking out at all like it should. What would be the problem?

It sounds like a bad bearing. Either a wheel bearing or differential bearing if it is all wheel drive.

You might have got rear ended while parked in a parking lot

Probably a broken wire at the control end.

piston arm could be the big end or the little end. if the engine before was (loud) ticking then when engine is warm it stops then it can be this. when these go it can lock up the engine or kick back. also faulty or bent cam's or broken valves (bent as well)

Your JEEP is only part time 4WHEEL DRIVE as you can't DRIVE on the STREET with it, its NORMAL and nothing is WRONG.


Part-Time and Full-Time 4x4 systems...

A part-time 4x4 system called Commandtrac is in all Wranglers together with low-end Cherokees and Liberties. A part-time 4x4 system locks the front and rear driveshafts together inside the transfer case so they drive the front and rear axles together in lock step. Because they are locked together, the front and rear tires must rotate at the exact same rpms. However, the front tires must rotate faster than the rear tires during any turn so a part-time system fights that... which makes a part-time system inappropriate on a paved road because the high level of traction on a paved road prevents the tires from slipping which would otherwise allow the front and rear tires to grudgingly rotate at different rpms. Offroad this is not a problem since the poor traction of an offroad trail allows the tires to slip as needed. But when they try to slip/rotate at different rpms on a high-traction surface, the entire drivetrain is stressed which is bad for it. This problem is called "wind-up".

In reality however, the front and rear axles really don't even turn exactly the same RPMs when you're in 4wd so you still get "wind-up" if you drove in 4wd on the street even if you drove in a perfectly straight line. Why? Because 1) you can't drive in a perfectly straight line and 2) the front and rear axle ratios are usually .01 different from each other. Like a 3.73 and 3.74, 4.10/4.11, etc.. Why the .01 ratio difference between the front and rear axles? Because the front and rear axles usually have different ring gear diameters which makes it nearly impossible for the gear manufacturers to economically make the front and rear axle ratios exactly the same. And no, they are not made .01 different on purpose to make the front or rear pull more when in 4wd, that is an old wive's tale.

Finally, a full-time 4x4 system like Selectrac is available on Grand Cherokees, Cherokees and Libertys couples the front and rear axles together, but they are not mechanically locked together like they are with a part-time 4wd system. The front-to-rear axle coupling can be done via either a differential like the Selectrac system uses (just just like what is in the center of an "open" axle) or a fluid (viscous) coupler. The benefit to a full-time 4wd system is that because the front and rear axles are not mechanically locked together, the front and rear tires/axles can rotate at different rpms from each other. This allows a vehicle with a full-time 4wd system to drive in 4wd "full time" on a paved road without problem since there is no 'wind-up' problem to harm the drivetrain. You cannot get a full-time 4x4 system in a Wrangler from the factory.



HOPE THIS HELPS.

If the c locks for axles are moving around it might cause the pinion to bind an lock the rear end until you backed up and if the pinion is loose it might all stack out and cause your problem. Understand this is just a wild guess.

It sounds more like your rear end has a bad bearing or a bad pinion gear. If it has high miles it may be time for a rebuild. It could be brake related also, take off the back drum and see if anything is rattling around in there or broken. If your not hitting the brakes they shouldn't engage.

Hello, with this body style, we have found this a lot. If the rear shoes are not adjusted really close, and I mean close, we have many issues the same as you are having. ABS is coming on, because rear wheels are locking up. You didnt mention if you cut the drums. A course cut will also cause this condition. We now set the brake drag so it turns 1 revolution after you spin the tire on the hoist. Hope this helps you get this repaired.

need to have the body control module scanned for codes.may need to go to the dealership for fix

lock it in and jack up and see which part isnt locked
transfer, front end
front end uses vacuum actuater
and transfer uses a electric motor
front driveshaft shouldnt turn when in park and front wheels off the ground
front wheels shouldnt turn with one wheel up