MyE28.com

Posted: **Feb 05, 2011 11:40 AM**

Command-trac (aka part time 4wd) has the effect of a locked center diff at all times. It might or might not have manual hubs depending on vintage (YJ and later don't have them). There's actually no center differential on that system, just the transfer case. If it's in 4wd (hi or low), both driveshafts are locked together and spinning at the same speed at all times.

I know very little about the Jeep AWD (Selec-Trac) systems.

Jeremy

Posted: **Feb 05, 2011 11:51 AM**

http://en.wikipedia.org/wiki/Jeep_four_ ... ve_systems

That's a good listing of all the various Jeep drive systems and what they came on.

Posted: **Feb 05, 2011 12:21 PM**

meh , I doan give a rodent's posterior. We canceled the insurance on the Grand Wag and turned in the plates yesterday. First time in 27 yrs we havent had a 4wd on the road.

I dream of a flat fender Willys PU or a base model Tacoma with 4 wd . But no more luxxo barge SUVs

Posted: **Feb 05, 2011 1:05 PM**

a wrote:meh , I doan give a rodent's posterior.

Andy, are you referring to a rat's ass?

Hahahahahahahahahahaha.....

Posted: **Feb 05, 2011 1:34 PM**

1st 5er wrote:Mine has three options;
4WD
Neutral (disengages all drive gear for towing)
4WD Low

OK; gotcha'. Mine is Selec-Trac:

2WD (open rear diff; great for wild spinning donuts, but little else)
4WD (diffs locked; they call it "Part Time")
AWD (open diffs; they call it "Full Time")
Neutral
4WD Low (diffs locked; low range)

Posted: **Feb 05, 2011 1:44 PM**

C.R. Krieger wrote:
1st 5er wrote:Mine has three options;
4WD
Neutral (disengages all drive gear for towing)
4WD Low
OK; gotcha'. Mine is Selec-Trac:

2WD (open rear diff; great for wild spinning donuts, but little else)
4WD (diffs locked; they call it "Part Time")
AWD (open diffs; they call it "Full Time")
Neutral
4WD Low (diffs locked; low range)

That might be the Quadra-Trac system. That's a whole lotta options!

Posted: **Feb 05, 2011 2:21 PM**

Jeremy wrote:
C.R. Krieger wrote:
1st 5er wrote:Mine has three options;
4WD
Neutral (disengages all drive gear for towing)
4WD Low
OK; gotcha'. Mine is Selec-Trac:

2WD (open rear diff; great for wild spinning donuts, but little else)
4WD (diffs locked; they call it "Part Time")
AWD (open diffs; they call it "Full Time")
Neutral
4WD Low (diffs locked; low range)
That might be the Quadra-Trac system. That's a whole lotta options!

Actually, it's equivalent to a 'manual' shifter. The Q-Tracs came with Limiteds and V8s. Mine is the lowly Laredo 4.0.

Posted: **Feb 05, 2011 7:10 PM**

Jeremy wrote:Wrangler, issue solved

P.S.
Thanks for graciously allowing the

.

Posted: **Feb 05, 2011 7:58 PM**

You say that like I could've stopped it.

I am occasionally good at recognizing my limits.

Posted: **Feb 05, 2011 9:52 PM**

Posted: **Feb 05, 2011 9:58 PM**

In the spirit of

....

I sometimes drove a 90's Jeep Cherokee at NBC4 in Columbus, and that 4.0L I6 engine was incredible! I loved flying around C-bus in those things, I just wish they had anti-lock brakes. Slid all over in the winter. And when you're used to having anti-locks on everything else, that takes some adjustment.

P.S. Glad you're all fixed up and ready to go!