stuck in 4wd

[coolgreen]

My Jeep seems to be stuck in four wheel drive. When I shift into 2 wheel, the front axle appears to disengage, but the 4wd light stays on and the front driveshaft is still engaged.

I had a problem with my vacuum lines going to the front axle a few months ago, but I found the leak and fixed it. My problem at that point was no four wheel drive.

I'm going to check the linkage, but it feels OK.

Any ideas?

[Toojeeps]

Probably the vacuum shift motor on the front axle. Ditch the whole vacuum set up and install a cable shift

[coolgreen]

But when I shift into 2wd the front driveshaft spins but the front wheels do not. If the vacuum system was messed up wouldn't the wheels keep spinning?

[kloppk]

If the light is on then the vacuum motor still has the passenger side axle engaged (or the 4WD switch on the axle is bad).
Sometimes mositure/water gets into the vacuum motor and it freeze's
not allowing the vacuum motor to function.
An easy test is:
1) Set the parking brake (block the wheels if necessary)
2) Start the Jeep, put in in 2 HI & tranny in neutral
3) There should be vacuum on the outermost line to the vacuum motor

If there is vacuum on the outer line then it's a problem with the vacuum motor.
If there is no vacuum on the outer line then there is a vacuum problem.

[coolgreen]

You were right - another vacuum line problem. Fixed it, got it out of 4wd, then had to fix the other line again. Time to get a cable-operated system.


Thanks again...