Lets analyze this (control trac transfer case) LONG

[Michigander]

TPLYNCH
you're right. My settings are 2WD->4AUTO->4LOW. I refer to 4 HIGH when I have the selctor in 4AUTO and the TC is engaged.

 

[TPLYNCH]

So, since the t/f case will only engage *and remain engaged* when the system senses the wheels are slipping, your problem most likely is the system is sensing slip when none exists, keeping the 4x4 engaged on dry surfaces. I stick with my initial thinking. Have the speed sensors checked first. That's the simplest/cheapest fix, so I'd start there. Good Luck!

P.S. Find another mechanic. I may be mistaken, but I thought the front ends on '95+ were in contstant motion since the 4x4 locks at the t/f case (no more auto-hubs). If it were your u joints, you'd hear the popping noises whether in 4x4 or not. Please correct me if I'm wrong anybody.

 

[Jason_25]

That's correct, Tom. 95+ front ends are in constant motion.

 

[Greg C]

I've got a 95 and have problems with the 4wd system engaging in 2 wd. As part of my diagnosis, I ripped into the front drive shaft between the front diff and the right front wheel. There is a vacume operated shift collar that engages the front wheels to the front driveshaft. The front driveshaft is not turning all the time. From what I understand, this vacume collar locks the front driveline in and then the tc's clutch activates and runs power to the front driveshaft as required.

 

[tenikiwon]

Can the clutch be replaced in these?

My problem is in Auto, High or Low under any kind of torque. With the wheels off the ground it works fine.