4WD...sort of....maybe someone can explain

dcoupal · 02-12-2005, 07:04 PM

A friend of mine and I currently have 3 jeeps. Here they are:

2005 GC Laredo V8 with Quadra-Drive I

2004 GC Laredo V8 with Quadra-Trac II

2001 GC Laredo I6 with Select-Trac

Today we tried driving the right front tire up a steep snow bank just to try out the 4WD of each. It was like driving the right-front up a ramp on an overall slippery surface.

The result really surprised me:

The 2005 easy pushed right over the bank with a little momentum, with a slow approach of the right front climbing the bank it could not climb it but it did at least get all 4 wheels spining at various times...it was sort of intermittent though...like the computer was rotating around trying to find a tire that would grip.

The 2004 was strange....it simply spun the right rear and left front tires. I thought that I had limited slip rear diff but with only one rear tire spinning I am not so sure. There was a strange, clicking or clunking noise that I am sure what it was. I had expected to see 3 tires turning.

The 2001 was even stranger...even with the select-trac in "part-time" 4wd it would only get the right rear tire spinning the entire front seemed dead. I thought the Part time setting locked the center diff?

Any comments appreciated.

TrojanMan · 02-12-2005, 07:06 PM

simply put, it ain't true 4wd until you have lockers f+r. I ain't gonna get into all the lsd bullcrap - cause that's all it really is:rockz:

dcoupal · 02-12-2005, 07:15 PM

Is the LSD really junk then? I had a 91 Jeep Cherokee without a LSD and it was aweful then my 2000 had a rear LSD and it felt like a world of difference...that is why I was so surprised at the result of our little test.

laphan · 02-13-2005, 01:25 AM

I have traclok on my rear axle and it doesn't lock the tires at all.
When one of the rear rotates 5x, the other side will only rotates 1x (tried that on ice).

My 242 engages right away when I put it in part time mode (wheel hop when I turn it to left or right), I suspect there is something wrong with your 01.

rhalvor · 02-13-2005, 09:13 PM

I suspect that your t-case wasn't really in part-time mode, otherwise it would have been spinning a front tire.

LouisianaZJ · 02-14-2005, 02:15 AM

locked f/r + 50/50 tcase split = the win

02-12-2005, 07:04 PM	#1
dcoupal Registered Join Date: Jan 2005 Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	4WD...sort of....maybe someone can explain A friend of mine and I currently have 3 jeeps. Here they are: 2005 GC Laredo V8 with Quadra-Drive I 2004 GC Laredo V8 with Quadra-Trac II 2001 GC Laredo I6 with Select-Trac Today we tried driving the right front tire up a steep snow bank just to try out the 4WD of each. It was like driving the right-front up a ramp on an overall slippery surface. The result really surprised me: The 2005 easy pushed right over the bank with a little momentum, with a slow approach of the right front climbing the bank it could not climb it but it did at least get all 4 wheels spining at various times...it was sort of intermittent though...like the computer was rotating around trying to find a tire that would grip. The 2004 was strange....it simply spun the right rear and left front tires. I thought that I had limited slip rear diff but with only one rear tire spinning I am not so sure. There was a strange, clicking or clunking noise that I am sure what it was. I had expected to see 3 tires turning. The 2001 was even stranger...even with the select-trac in "part-time" 4wd it would only get the right rear tire spinning the entire front seemed dead. I thought the Part time setting locked the center diff? Any comments appreciated.

02-12-2005, 07:06 PM	#2
TrojanMan You got a purdy mouth. Join Date: Dec 2003 Location: Charlotte, NC / Raleigh, NC Posts: 3,532 Thanks: 0 Thanked 0 Times in 0 Posts	simply put, it ain't true 4wd until you have lockers f+r. I ain't gonna get into all the lsd bullcrap - cause that's all it really is:rockz: __________________ I probably hate you.

02-13-2005, 01:25 AM	#4
laphan Registered Join Date: Jan 2004 Location: Houghton, MI Posts: 253 Thanks: 0 Thanked 0 Times in 0 Posts	I have traclok on my rear axle and it doesn't lock the tires at all. When one of the rear rotates 5x, the other side will only rotates 1x (tried that on ice). My 242 engages right away when I put it in part time mode (wheel hop when I turn it to left or right), I suspect there is something wrong with your 01. __________________ 98 ZJ 4.0L, 42RE, NP242 (sold) Mopar skids, Bridgestone Dueler A/T Revo, Mopar hitch with Hayden transmission coooler, DT8000 pre-runner shocks, 2" Anthony BB, Kevin's Radiator Support, OME SD40 SS, trac-lock LSD. 2006 Toyota Camry Solara

02-13-2005, 09:13 PM	#5
rhalvor Registered Join Date: Sep 1999 Location: I'll check on that Posts: 2,587 Thanks: 0 Thanked 0 Times in 0 Posts	I suspect that your t-case wasn't really in part-time mode, otherwise it would have been spinning a front tire. __________________ Thought I was dead.....turns out I was just in Kansas......

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02-12-2005, 07:15 PM	#3
dcoupal Registered Join Date: Jan 2005 Posts: 6 Thanks: 0 Thanked 0 Times in 0 Posts	Is the LSD really junk then? I had a 91 Jeep Cherokee without a LSD and it was aweful then my 2000 had a rear LSD and it felt like a world of difference...that is why I was so surprised at the result of our little test.

02-14-2005, 02:15 AM	#6
LouisianaZJ jeep on 6 ton jackstands Join Date: Nov 2002 Posts: 6,644 Thanks: 0 Thanked 0 Times in 0 Posts	locked f/r + 50/50 tcase split = the win