05/30 Q/A Session - 2005 - 2007 Grand Cherokee - Page 9 - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Jeep Forums > Jeep Engineering - Q&A > 05/30 Q/A Session - 2005 - 2007 Grand Cherokee

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineSavvy Billet LED Tail LightsWant to be able to SEE? DOT Approved Headlights for under

Closed Thread
Unread 05-30-2007, 05:48 PM   #121
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by nierace
Why did jeep cut down on the head room on the WK's from what the WJ's had? I'm assuming it was for aerodynamics, but there is a significant difference between the two...was it necessary to cut down on the headroom that much ?

I'm not going by dimensional facts, but by my experience in driving both generations over long term periods...obviously with the power seat you can position yourself so your head isn't hitting the roof in the WK, but its not nearly as comfortable as the WJ for taller people...
Thank you for your post - we always appreciate getting direct feed back from our customers. We will take it into consideration.

Thanks again!

__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:48 PM   #122
GoGadgetWK
Registered User
2010 WK 
 
Join Date: May 2007
Location: Castle Rock, Colorado
Posts: 54
Noticed when I make left U turns quickly the steering makes a loud binding like sound. Didn't do it making right U turns. I've tried this with a 05 and 07 Wk's. Have you noticed this and is it normal?
GoGadgetWK is offline   Quick reply to this message
Unread 05-30-2007, 05:49 PM   #123
oH2o
Registered User
 
Join Date: Feb 2002
Location: Neither here nor there
Posts: 221
Concerning the interior redesign on the '08 model, can you tell us if there is any chance that some of the new components, like the center bezel, will fit on earlier models? I would even be willing to change out the entire i/p if necessary to get rid of all that plastic that Chrysler seems to love so much!
oH2o is offline   Quick reply to this message
Unread 05-30-2007, 05:50 PM   #124
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by GoGadgetWK
Noticed when I make left U turns quickly the steering makes a loud binding like sound. Didn't do it making right U turns. I've tried this with a 05 and 07 Wk's. Have you noticed this and is it normal?
Do you notice this in the steering wheel (interior noise) or in the driveline (underbody)?
__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:51 PM   #125
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by TRZ
Can you compare the strength of the front and rear axles to say the D44s in the JK Rubicon? Any thoughts on what spares to carry for the front axle?
The ring gear diameter on the in the JK are 216mm and 226 mm front and rear respectively. The axles in a WK are 200mm and 213mm front/rear. In general the strength of the axle is proportional to the gear diameter so it would be difficult to argue the WK axles compare in strength. However, the WK does not offer a manual transmission so the spike loads go way down when transmitted through the torque converter. The 4x4 WK also shares the load between both axles all the time. In the end the system is very tough. We have done some very aggressive off-roading with no axle breakage.

As for what spare parts to bring... The rear driveshaft is can get banged around pretty good on the rocks. Tires can take a beating, depending on the trail, and sill protection is recommended for serious off-roading.
__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:51 PM   #126
blankster
Registered User
 
Join Date: May 2007
Location: Chicago Area
Posts: 6
Why were the tires changed to Fortera's on the '07s - Are there advantages over the Wranglers?

One compliment regarding the WK - Brakes are MUCH improved! Great job.
blankster is offline   Quick reply to this message
Unread 05-30-2007, 05:52 PM   #127
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by oH2o
On the WJ you can retrieve CEL codes vai the key on/off/on/off/on method, is there a reason that you cannot do this on the WK?
Depending on the model year of your WK, this feature is implemented. One useful tip that I like to follow when pulling the codes from the cluster: turn the key to on and wait until the odometer displays, then turn the key off. Repeat this two more times.

Jeep on
__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:53 PM   #128
Colo.kid
Registered User
2008 WK 
 
Join Date: Jul 2006
Location: Golden, Colorado
Posts: 38
IMO the WK is the best off-road capable SUV now available and is a significant improvement over the previous model (despite the SFA issue).

Compared to the previous models the WK offered an extensive list of fairly major changes when it was first introduced. From strictly an engineering standpoint, what feature gave you the greatest challange or sense of satisfaction.
__________________
Russ
2008 WK Overland--CRD, 5-inch JBA and 4-inch BDS; all Matrix; Nitto 35s
2013 WK2 Overland
Colo.kid is offline   Quick reply to this message
Unread 05-30-2007, 05:53 PM   #129
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by MGrobe
I am a diehard Cubs fan (something you can't help me with) and a fanatical Jeep owner.

I hate to think that the JK is the only live axle Jeep as some of us prefer a wagon like a XJ/WJ and now WK. I know my current idea is a screw loose question, but why couldn't the UpCountry package on the WK be more meaningful like the Rubicon package is to the TJ/JK?

I wish the UC package included a solid front axle in place of the IFS. Not that it is that evil, but someone that buys the Up Country package would understand that the trade-off is a vehicle that is more off-road oriented than street. Then guys like me can buy a CRD WK in UC trim and have a vehicle that meets my preferences.

Any large reason why the uniframe can't be adapted for both scenarios?
A lot of us feel this way too...

The only way we can get this type of package is to have YOU keep asking for it. We don't offer an up-country suspension on any current Jeep model including the Rubicon. For most of our customers, the IFS offers more capability than they will ever need. With the QuadraDrive II system, even fanatical customers have found the IFS to be adequate - what may be lost in articulation is made up for in traction. (Of course we understand that for the most severe rock crawling the SFA is superior.) You can see where the market is though - there are only 4 SFA vehicles available in the US (Jeep Wrangler, Dodge Ram Heavy Duty, Mercedes G-wagen, and another brand heavy duty truck )

It is more of a market demand thing than an engineering thing.

Thanks for your input!
__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:53 PM   #130
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by oH2o
Concerning the interior redesign on the '08 model, can you tell us if there is any chance that some of the new components, like the center bezel, will fit on earlier models? I would even be willing to change out the entire i/p if necessary to get rid of all that plastic that Chrysler seems to love so much!
This would take a huge committment, undoubtedly in both time and money - obviously you're very dedicated!

None of the basic mounting points have really changed, but this would still be a very complex undertaking due to the integrated nature of all the subsystems integrated into the instrument panel. Be aware that some electronic changes (can't talk about future product ) may make wiring a real challenge.
__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:53 PM   #131
TRZ
Registered User
2008 WK 
 
Join Date: May 2007
Location: Lakewood, CO
Posts: 524
Suggestions (no reply necessary)

1. Bring back Inferno Red and/or Patriot Blue! (Current red and blue are too dark)
2. Another call for a more trail-worthy WK! I currently have a ZJ and am looking to upgrade but I'm still on the fence. If a more trail worthy WK existed, I'd already be a WK owner.
3. Redesign spare tire area to accomodate larger tire.
4. Disable TPS in 4 LO (if legally possible)
5. Add accomodations for larger tire sizes in the speedo/ ESP. I know, I know, you can't test everything - but people ARE installing bigger tires on the WK (and JK) and just turning off ESP, which defeats a huge benefit of upgrading from to a WK.
TRZ is offline   Quick reply to this message
Unread 05-30-2007, 05:53 PM   #132
GoGadgetWK
Registered User
2010 WK 
 
Join Date: May 2007
Location: Castle Rock, Colorado
Posts: 54
Quote:
Originally Posted by JeepEngineers
Do you notice this in the steering wheel (interior noise) or in the driveline (underbody)?
I not sure how to reply to this question. new here, So I'll copy and paste. It sounds like it's coming from the steering gear box/ steering arms at the underbody.
GoGadgetWK is offline   Quick reply to this message
Unread 05-30-2007, 05:55 PM   #133
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by TRZ
1. Bring back Inferno Red and/or Patriot Blue! (Current red and blue are too dark)
2. Another call for a more trail-worthy WK! I currently have a ZJ and am looking to upgrade but I'm still on the fence. If a more trail worthy WK existed, I'd already be a WK owner.
3. Redesign spare tire area to accomodate larger tire.
4. Disable TPS in 4 LO (if legally possible)
5. Add accomodations for larger tire sizes in the speedo/ ESP. I know, I know, you can't test everything - but people ARE installing bigger tires on the WK (and JK) and just turning off ESP, which defeats a huge benefit of upgrading from to a WK.
Thanks for your suggestions!
__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:55 PM   #134
JeepEngineers
Registered User
 
Join Date: Feb 2007
Location: Michigan, USA
Posts: 1,041
Quote:
Originally Posted by blankster
Why were the tires changed to Fortera's on the '07s - Are there advantages over the Wranglers?

One compliment regarding the WK - Brakes are MUCH improved! Great job.
The WK Fortera tire was commonized with the XK tire. The Fortera actually has reduced rolling resistance compared to the Wranglers, so a small fuel economy improvement is possible.

Thanks for the positive feedback on the brakes!! We always appreciate hearing about the things Jeep owners like!
__________________
[FONT="Arial Black"][SIZE="4"]JeepEngineers[/SIZE][/FONT] "INTRODUCING THE GREATEST JEEP[SIZE="1"]®[/SIZE] LINEUP EVER"
[I][URL="http://www.jeep.com/"]http://www.jeep.com/[/URL]
[URL="http://www.jeep.com/en/experience/community/have_fun_out_there/"]Have Fun Out There![/URL]
[URL="http://www.facebook.com/jeep"]Check out Jeep on Facebook[/URL]
[URL="http://www.youtube.com/thejeepchannel"]Check out Jeep on YouTube[/URL]
[URL="http://www.flickr.com/groups/jeepexperience/"]Check out Jeep on Flickr[/URL][/I]
JeepEngineers is offline   Quick reply to this message
Unread 05-30-2007, 05:56 PM   #135
oH2o
Registered User
 
Join Date: Feb 2002
Location: Neither here nor there
Posts: 221
Quote:
Originally Posted by JeepEngineers
Depending on the model year of your WK, this feature is implemented. One useful tip that I like to follow when pulling the codes from the cluster: turn the key to on and wait until the odometer displays, then turn the key off. Repeat this two more times.

Jeep on
Cool, I will try it, same on a '06 SRT8?
oH2o is offline   Quick reply to this message
Closed Thread

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.