Grand Cherokee Snow and Ice Performance

No offense meant, but you need to play the video on the Quadra trac II. Nearly 50% of power is on rear axle not all of it and it does transfer to either front axle or both front axles if needed. A couple of their systems are very much the same.
It does not as you refer go all to front or all to rear it does sense wheel slippage and transfers to the axle with the traction. If in doubt go to your Jeep link and click on Quadra trac II and watch and listen to the video illustration.

Thanks

Replies to this message:

52132 (Dec 11, 2007 10:08 am)
- naatz1 (Dec 12, 2007 6:41 pm)
  - 52132 (Dec 12, 2007 7:28 pm)
52132 (Dec 11, 2007 12:08 pm)

#22 of 29 Re: Grand Cherokee's performance in snow & ice [paulc35] by 52132

Dec 11, 2007 (10:08 am)

Replying to: paulc35 (Dec 10, 2007 5:00 pm)

I watched the video several times, you can see by watching the video that it says "can transfer torque to either axle if neccesary". On the left side of the illustration it says.This active full-time system functions in all-wheel-drive until additional traction is needed, then reacts by electronically engaging the clutch pack to transfer up to 100% of the torque to either axle. This system also features 2.72:1 LOW-RANGE and NEUTRAL. I don't want to argue, but please pay attention

(It shows in the video how it switches power by the drive-shafts)

Replies to this message:

naatz1 (Dec 12, 2007 6:41 pm)
- 52132 (Dec 12, 2007 7:28 pm)

#23 of 29 Re: Grand Cherokee's performance in snow & ice [paulc35] by 52132

Dec 11, 2007 (12:08 pm)

Replying to: paulc35 (Dec 10, 2007 5:00 pm)

I know that Quadra-driveII transfers 48% of the torque to the front and 52% to the rear under normal driving conditions. It can transfer all torque to one wheel if necessary. If your referring to Quadra-driveII, then you are correct. The regular Quadra-drive (not to be confused with Quadra-driveI or Quadra-driveII) uses the same Quadra-tracII transfer case (please pay attention to the names) but has vari-loc differentials. Just in case you may have gotten the names wrong, I will leave a link to Quadra-tracII (the first one) and Quadra-driveII (the second one) http://www.jeep.com/en/4x4/how_systems_work/quadra_trac_2/ http://www.jeep.com/en/4x4/how_systems_work/quadra_drive_2/

#24 of 29 Re: Grand Cherokee's performance in snow & ice [paulc35] by 52132

Dec 11, 2007 (1:38 pm)

Replying to: paulc35 (Dec 10, 2007 4:44 pm)

By the way, axle is not the same as wheel. There are two axles on every car. When you said "Quadra trac II can transfer power to either axle in the front", did you mean wheel? When you say "either axle in the front", it does not make any sense. Please clarify

#25 of 29 Re: Grand Cherokee's performance in snow & ice [52132] by naatz1

Dec 12, 2007 (6:41 pm)

Replying to: 52132 (Dec 11, 2007 10:08 am)

Great video and discussion. I had a 2001 Selectrac JGC and just bought a 2007 QuadratracII Laredo(automatic 4WD with low range). We've had a tough snow/ice December here in MN (some say the worst since 96) I've noticed no slippage while driving around so far, I have had trouble even "playing" to feel the Stability control kickin. I did show my wife while crawling up a steep hill to our subdivision one icy morning how to pop it in low range and noticed the dash light came on implying traction control and stability control are OFF. I would probably use low range if we had 10+ inches of snow but question if it's really safer with those systems off than using the normal automatic 4WD with peace of mind the stability control is working (assuming you are not stuck or in true off road conditions).

Any comments?

Replies to this message:

52132 (Dec 12, 2007 7:28 pm)

#26 of 29 Re: Grand Cherokee's performance in snow & ice [naatz1] by 52132

Dec 12, 2007 (7:28 pm)

Replying to: naatz1 (Dec 12, 2007 6:41 pm)

I would keep it in automatic mode. Studies indicate that widespread application of ESC (Electronic Stability Control) could save more than 7,000 lives per year. If all vehicles on U.S. roads had ESC, it might prevent as many as 800,000 of the 2 million or so single-vehicle crashes that occur each year. When a driver enters a curve too fast, for example, the vehicle may spin out of control. But with ESC, automatic braking is applied to help keep the vehicle under control. When you turn off ESC you are taking a BIG risk. Studies indicate that traction control can help increase traction by up to 25% (which may be the reason you could not get any wheel-slip.

#27 of 29 Plowing with a Jeep Grand Cherokee Classic 98' by brendan3

Dec 19, 2007 (3:39 pm)

I Have a 1998 Jeep Cherokee Classic That I'm going to put a plow on. The mechanic says each Jeep model has its own set of springs, in order to plow some need "helper" springs. My question is does anybody know when I put the plow on, (400 lb. Snow Way) does my jeep need "helper" springs?

Replies to this message:

52132 (Dec 20, 2007 1:22 pm)

#28 of 29 Re: Plowing with a Jeep Grand Cherokee Classic 98' [brendan3] by 52132

Dec 20, 2007 (1:22 pm)

Replying to: brendan3 (Dec 19, 2007 3:39 pm)

Maybe this will help http://townhall-talk.edmunds.com/WebX/.f16959b/0

#29 of 29 2WD vs. 4WD Grand Cherokee by stumpf2000

Feb 08, 2010 (5:22 pm)

Hi-

I am looking at an 02 limited JGC. Love it except for it is only 2WD. I live in Illinois so snow is an issue. I have never had a jeep without the smart track systems so I am not sure as to how much I used the 4WD. Can anyone tell me if they have had experience and can say how much of a drawback the 2WD will have. Any ideas as to how it handles in snow. I am looking for cheap, but love the idea of having the 4WD. Any suggestions, or comments or ideas would be greatly appreciated.
Thanks,
Stephen

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