My girlfriend just bought a new liberty limited. It has 2WD, Part-time 4WD, Full-time 4WD, and 4WD Lo. I have a 2005 Nissan Frontier 4x4 and it only has 4x4 hi and lo. What is the difference b/w part-time and full-time?
2007-12-06 08:00:55 · 7 answers · asked by mpbclutch33 2 in Cars & Transportation ➔ Car Makes ➔ Jeep
Part-time 4WD: The differential locks the front and rear driveshafts together, which then rotate at the same speed for the most traction. It should only be used when you need a little more extra traction, such as when you're the road is super slippery.
Full-time 4WD: The differential splits the power, sending about 1/2 to the front axle and 1/2 to the rear. This is a great feature because your girlfriend can leave the transfer case in full-time 4WD and drive her Jeep on ANY road surface including dry, paved roads. I know quite a few who drive their Jeeps year round in this position.
4WD Lo: In a nutshell, you would have vastly improved torque if you ever get the Jeep stuck or if she needs to travel through some very deep snow. It's also good to use if she wants to do some serious off roading.
If you look on the transfer case, it may say 'Selec-Trac' right on it. At least that what it used to be called, so I'm not sure if that's what Jeep is still calling it. I have it in my '97 Laredo and absolutly love it! My '02 Liberty just has regular old 4 hi and lo.
2007-12-06 10:55:59 · answer #1 · answered by ladydi_1987 5 · 1⤊ 0⤋
If it's like the '06 its in either 2H, 4H, N or 4L. Those are the positions on the shifter (it isn't a throttle) for the transfer case. According to my owners manual the "Part time" indicator illuminates when in 4H. The 4LO MODE indicator light illuminates when the transfer case is shifted to 4L. It also cautions not to attempt to make a shift when the front or rear wheels are spinning. "The transfer case is not equipped with a synchronizer and therefore the front and rear driveshafts must be equal for the shift to take place". The manual also states under the explanations for 4H & 4L that each locks the front and rear drive shafts together so I think that "Part Time" designator is maybe a bit of a mis-nomer. The Grand Cherokee has a different setup which does, I believe have a part time setup. Maybe they just used the same instrument panel and activated those lights because they were there. From personal experience if you want to shift the transfer case while sitting still make darned sure you have the transmission in Neutral. Try it in Park and (if you pull hard enough) you'll wind up needing a new transfer case shifter as it will break a nylon piece attaching the cable. The cable isn't sold separately and the entire shift unit has to be replaced at around $350. Luckily I did it while it was still under warranty.
2016-03-14 05:39:58 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Gas mileage is really the key issue, in mild conditions part time 4X4 is usually better on gas in tough conditions full time is rather better but it sucks far more gas to move all 4 wheels. Different companies have had different ways to make part-time/full-time so the real technical difference could vary for older vehicles I think this was done mechanically with a sort of limited slip system.
2007-12-06 08:24:37 · answer #3 · answered by silencetheevil8 6 · 0⤊ 0⤋
Full time has a center differential so it can be used on pavement in dry conditions without the axles binding. Part time means no center diff, meant for off road or slippery road conditions. Unless you have disconnecting hubs gas mileage between the two systems is the same, whether the engine turns the half shafts or not everything still turns.
2007-12-06 09:43:33 · answer #4 · answered by cimra 7 · 0⤊ 0⤋
Hi... Some vehicles (jeeps) come with a 2wd lo/Hi and a 4wd lo/hi... Just look on your transfere plate under the handle it'll tell you.. The actuall diffance is the transfere...
The jeep is ment to pull.. It's a tranction aid.. Just because yours doesn't come with it doesn't mean it isn't adaquate..
Just means hers is meant for diffrerent tasks.. The transfere is very rare, there aren't many made now-a-days with a select-4.
2007-12-06 08:18:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋
2WD = only rear axle is engaged to drive the Jeep
4WD Part Time = The vehicle determines when to engage the front axle, just like the AWD on a Suburu... You can drive the Jeep like this on dry pavement without any issues
4WD Full Time = Is just like the 4HI in your truck, it locks in the front axle so that both axles pull (not recommended for dry pavement)
4LO = Just like on your truck. Locks both axles together for more traction, just like in 4HI, but has a gear reduction to send more torque to the wheels.
2007-12-06 09:17:14 · answer #6 · answered by boogie_4wheel 7 · 0⤊ 0⤋
I agree with "lady di_1" good jeeping with you!!
2007-12-08 07:01:19 · answer #7 · answered by happywjc 7 · 0⤊ 0⤋