TECHNIC JEEP

JEEP LIBERTY

By the time you read this new,Jeep---the Liiberaty---should have been at the dealership for around 2 1/2 months. You've probably seen one driving down the road, and if you are a true Jeep freak you already own one. If you've got one outside we can hopefully help you learn a thing or two about your new ride. If you don't have one, pay attention and take notes since you will be tested on this stuff later.
Generally speaking, hard-core Jeep fans are scared of phrases like "superior on-road refinement," or "independent front suspension." Have no fear --- somewhere under that cute facade beats the heart of a true Jep. How do we know, you ask? Well a few months ago, the DaimlerChrysler corporation allowed us to drive the new KJ both on-and off-road. The result was that we were pleased with how the Liberty dealt with the obstacles of modern road driving and some fairly tough off-road trails that would make many of the new car-based SUVs pee in their car-based pants.
WHY THE LIBERATY HAS BIG SHOES TO FILL
  • The Cherikee won 4-Wheel & Off-road's 4x4 of the Year both times it was entered.
  • The first time the XJ won it had a GM 2.8L V-6. If that didn't keep it from winning we can't imagine what could.
  • The Grand Cherokee won 4 Wheel & Off-road's 4x4 of the Year five times.
  • the Cherokee was frist introduced in'84 --- that's 17 years without a major body or frame redesign.

THE COMPETITION
Jeep provided us with a few examples of what they consider the KJ's competion, and we have chosen this as an opportunity to make fun of them.
We have said it time and time again : Do not attempt to convert your car into a truck. Now, not only do we have to deal with some joker from Alabama with a Renualt Le Car that runs 35-inch mud tires and wants into Jp because it's got a Dana 30 from a Leep, we also have to deal with huge car companies trying to make cars more off-road worthy.
ON - ROAD DRIVING IMPRESSIONS
We had the opportunity to drive the KJ with both the 3.7L V-6 and the 2.4L i4. the V-6 model was an auto although we pined for the manual, which would definitely be a bit more spirited. The V-6 provides plenty of power, but lacks the flat torque band of the older 4.0L I-6. The automatic did a good job of shifting, and even seemed to downshift while on the highway when a steep decent was encountered with the cruise control engaged. The four-cylinder provided good lowend power but was left struggling up longer higher-speed inclines to the point of somewhat aggravated downshifts and hands patting the dash while chanting "come on, come on, come on."   both KJs had smooth but sportive on-road handling despite being somewhat heavier than a Cherokee. this extra weigh of the KJ seems to nullify the added 20 or so horsepower that the KJ's new V-6 has over the XJ's straight-six.
OFF-ROAD DRIVING IMPRESSIONS
With 4 inches of compression and 4 inches of drop this may be one of the better IFS setups for off-road, but like most IFS trucks the KJ gets most of its flex from the rear suspension. The visibility is great but the lack of a definitive front corner makes sharp turns between trees difficult without compromising the front fender flares. We used the skid paltes a lot off-road, but with good approach and departure angles, and with the optional limited slip we were able to get through some very tough sections of the trail without too much troble. For a stock truck the Liberty works darn well on the trails.

LIKES
  • Some cool new ideas have been employed on the KJ.
  • Comfortable ride on-road and off-road.
  • The four-cylinder has good low-end power for four-cylinder.
  • Good approach and departure angles.
DISLIKES
  • The hood is rounded at the corners for visibility like a TJ, which is good. The problem is now you can't see where the fender ends. this increases the chance that you will unintentionally introduce your fender to a rock or tree along twisty trails.
  • All four-wheels-drive KJs should come with tow hooks and skidplates.
  • Where is the Up-Country suspension?

SOME COOL NEW STUFF
  • The 2.4L four is borrowed from other Chrysler cars such as the PT Cruiser and brings with it the NV1500 Manual five speed, which features a dual-mass flywheel said to absorb harsh shifting, sort of like a torque converter does in an automatic.
  • When you shift into 4-Lo the KJ's computer system modifies the idle speed and adjusts the antilock braking system for better off-road performance.
  • Despite the IFS, the Dana 30 centersection should accept just about any aftermarket traction-adding device for the good ol'Dana 30 straight-axle.
  • The 3.7L V-6 offers aluminum heads, a composite molded-plastic intake manifold, counter rotating balancing system, dual-knock sensors, and a Zero-:eak engine sealing system.
  • the exhaust has resealing coupler that will separate if the muffler gets hung up on a rock. this break in the exhaust makes the KJ grumble like a street rod until the rock is passed and the coupler reseals the exhaust system.
HONDA CRV
A civic-based cute-ute for the masses. We're sure that it gets great gas mileage, but our precious masculinity would be far too damaged be seen in one regularly.
GRIPES
  • the halfshafts make good toothpicks.
  • "Real Time 4WD," A two=legged hamster with one eye and irritable bowel syndrome has more off-road prowess.
RAV4
Toyota is a phenomenal car and truck manufacturer, but you can't make a Camry an SUV by adding a few half shafts and some plastic fender flares.
GRIPES
  • Someone put the motor in sideways.
  • That is not a tow hook.
FORD ESCAPE
We are not sure which car Ford based the Escape on, but who cares? It is more of a car than it could ever be a truck. At least it has aV-6 available which means you may be able to use momentum to get further off-road before the thing gets hopelessly stuck.
GRIPES
  • Could be a fun car but it's too high off the ground to corner wall and ti's too low to be of any practiceal use off-road unless you think wet grass is an extreme off-road adventure.
NISSAN XTERRA
OK, finally we have a contender. This actually can be considered an SUV. It has a transfer case which seems to be as elusive on so-called SUV as a sane cabdriver in New York City. Thankfully, this SUV is based on a truck, Nissan's Frintier. Unfortunately, the Frontier is nit very capable off-road.
GRIPES
  • The low-range ratio is too high and does not afford the slow speed and vehicle control that most transfer case-equipped rigs do.
  • It's got a V-6, but where's the beef?

บทความจาก JP MAGAZINE : September 2001

Technic Jeep ฉบับย้อนหลัง

เรื่อง
ฉบับที่
ประจำวันที่
การตรวจเช็ค Senser ที่สำคัญ
1
20 ก.ย. 44
เปรียบเทียบฟอร์มและสมรรถณะ Cherokee 4.0L กับ 2.5L
2
05 ต.ค. 44
30" ยกสูงดีไหมเนี่ย??? แล้วจะยกแค่ไหนดี
2
05 ต.ค. 44
ข้อแนะนำสำหรับรถที่ยกสูง 3"
2
05 ต.ค. 44
ทำไม???ถึงบอกว่า 31" เหมาะสมที่สุดสำหรับ Cherokee
2
05 ต.ค. 44
อะไรคือ Locking differential ???
3
20 ต.ค. 44
ความสำคัญของการบำรุงรักษา
3
20 ต.ค. 44
ความรู้ทั่วไปเกี่ยวกับระบบขับเคลื่อน 4 ล้อของ Jeep
3
20 ต.ค. 44
ความสัมพันธ์เรื่อง ขนาดของยาง-อัตราเร่ง-แรงบิด-อัตราทดเฟืองท้าย
5
20 พ.ย. 44
ข้อควรระมัดระวังสำหรับรถ Jeep ที่มีอายุใช้งานมากกว่า 100,000 KM.
5
20 พ.ย. 44
เรื่องต้องรู้ที่คุณไม่รู้เกี่ยวกับแบตเตอรี่.
6
05 ธ.ค. 44
บทความ...Jeep Liberty 8 05 ม.ค. 45
ข้อควรปฏิบัติในการนำรถข้ามน้ำ 9 20 ม.ค. 45
เฟืองท้ายมีเสียงหอน 10 05 ก.พ. 45
สาเหตุความเสียหายของเกียร์อัตโนมัติที่พบมากที่สุด 13 25 มี.ค. 45
Diagnostic Trouble Code Descriptions (1994-1997) 14 10 เม.ย. 45
Description And Operation (1998-2000) 14 10 เม.ย. 45
การบำรุงรักษาเกียร์ Manual 5 Speed Jeep Cherokee 2.5L 16 10 พ.ค. 45
เพลาข้างพัง??? 16 10 พ.ค. 45
แรงดันลมยางกับประสิทธิภาพการขับขี่ 17 10 มิ.ย. 45