04/18 Q/A session - 2007 Liberty - Page 2 - JeepForum.com
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Go Back JeepForum.com > General Jeep Forums > Jeep Engineering - Q&A > 04/18 Q/A session - 2007 Liberty

The ULTIMATE "Selectable" Locker System! BroughRockridge 4WD IS Taking Zone Offroad Suspension Lift Kits WJ Modular Recovery & Bull Bar Relocation Packages

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Unread 04-18-2007, 03:13 PM   #16
bigapplephx
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JK Wrangler Engine Oil

My owners manual says the engine oil for my Wrangler Rubicon is 5W20, there are no other oil types specified. Chrysler/Jeep says the engine oil for the 3.8L engine is 5W20, with no alternates.
I had my first oil change doneby the dealer. The invoice said 10W30 oil was used. I questioned the service manager and he says the oil used is OK per Chrysler/Jeep, engine warranty will not be effected.
What gives, Al Pioquinto

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Unread 04-18-2007, 03:13 PM   #17
JeepEngineers
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Quote:
Originally Posted by andru_50
I just bought a new Wrangler 07 X and after about a week there seems to be a squuek when i accelerate and i high pitch sqeel when there is NO pressure on the clutch..as soon as i put pressure on the clutch it goes away..it is very loud and annoying..the dealer says there may be a burr on the clutch or this may be a factory defect..can someone help?
Again, were trying to keep this particular Q&A to KJ, but it sounds like your dealer is working with you on the issue. Unfortunately defects occur sometimes, hence the reason why we back our products up with an excellent warranty!
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Unread 04-18-2007, 03:16 PM   #18
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Quote:
Originally Posted by redrom01
Why the use of independ suspention in the front rather than a full axle?
The independent front suspension was implemented to improve on road ride.
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Unread 04-18-2007, 03:16 PM   #19
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3D CAD Models

Are there 3D CAD models of say a Dana 44 axle housing and wrangler YJ frame available to those of us who use CAD to design and simulate the impact of modifications to the Jeep?
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Unread 04-18-2007, 03:16 PM   #20
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Why did you choose to not use the oil pressure gauge and the voltmeter from the instrument cluster for the new MY? I know you excluded those from the KJ, but I find them as nice and useful to have, especially after a mishap in my XJ this week where both came in handy.
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Unread 04-18-2007, 03:17 PM   #21
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Quote:
Originally Posted by jg45
Good afternoon,
I have a 2003 Jeep Liberty KJ 4WD. The front end is the same as the 2007 I believe. Several people have had issues with the front diff housing breaking. It appears that the breaks occur when the front wheels are spinning and then grab tracction quickly. Has DCX done anything to fix this issue or are there any plans to? If not, can you as engineers propose a solution we the owners could do to strengthen the housings. A common suggestion is to put a steel collar around the neck of the housing around the area where the pinion bearing resides. Does this sound like it would work? Thank you again for taking time to speak with the Jeep community.
I have seen the issue you describe on the Liberty front axle. We are always looking at how our customers are utilizing our vehicles and re-evaluating how we test and validate their designs to try to meet their needs, and making changes based on those evaluations.

I'm also familiar with the collar you describe, but I cannot speak to whether it will actually help or not.
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Unread 04-18-2007, 03:17 PM   #22
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Quote:
Originally Posted by KUK9
Well, if I get to go first, here goes. I know the feature topic this time is the Liberty, but I have a question regarding the Wranglers. What is the purpose of the rake design in the stance of the new Wrangler?
Again, we're trying to focus on KJ for this particular Q&A session. Bear in mind though that design is driven by a number of factors such as stying, fuel economy, wind noise, etc.
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Unread 04-18-2007, 03:18 PM   #23
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The manual transmission combined with the electronic throttle control seems like a bad idea.

Sometimes when you go to accelerate there is a pause, sometimes there is no pause. A manual transmission requires excellent timing and you get better at it over time. If you never know if a pause is coming or not you can't develop this timing.
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Unread 04-18-2007, 03:18 PM   #24
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Quote:
Originally Posted by redrom01
What is the difference between the old KJ independ front suspention and the new "short-long are" front suspenttion?
The KK has has a 1 inch wider track than the KJ.
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Unread 04-18-2007, 03:19 PM   #25
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JeepEngineers, Do you know if the Liby is going to look like a Smaller Commander come 08? I have seen some pics of the design?
I like the more box look that Jeep has had.
Thanks
Andy
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Unread 04-18-2007, 03:20 PM   #26
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Quote:
Originally Posted by Dassc612
Why did you choose to not use the oil pressure gauge and the voltmeter from the instrument cluster for the new MY? I know you excluded those from the KJ, but I find them as nice and useful to have, especially after a mishap in my XJ this week where both came in handy.
The exlusion of the gauges is carryover from KJ. Malfunction Indicator Lights in the cluster are provided for Oil Pressure and Charging system issues.
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Unread 04-18-2007, 03:21 PM   #27
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Quote:
Originally Posted by 01JeepXJ
JeepEngineers, Do you know if the Liby is going to look like a Smaller Commander come 08? I have seen some pics of the design?
I like the more box look that Jeep has had.
Thanks
Andy
Photos of the new 2008 Liberty have been posted on www.jeep.com

Check 'em out!
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Unread 04-18-2007, 03:22 PM   #28
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F#& torque convertor

Is the replacement TC for the F37 recall the same or different than the one that came in it?
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Unread 04-18-2007, 03:22 PM   #29
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I was driving last week on some hilly forest roads in 2-Wheel Drive, up and down, twists and turns, up and down some more. Seemed like a lot of shifting going on with the transmission. What are the best settings to use in this situation? (overdrive off? 1st or 2nd gear? just leave it in "Drive"?)
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Unread 04-18-2007, 03:23 PM   #30
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Thank you,
Another question if you don't mind. Why is the change interval ont he differential fluid so short? My manual suggests every 12K. That seems very short in comparison to previous vehicles I have owned.
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