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Old 06-22-2012, 07:49 PM
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How do I drive in four-wheel drive?

Sorry for the stupid question, but I'm new to owning a four wheel drive vehicle. What is the process for going from...

2Hi to 4Hi?
or
2Hi to 4Lo

I pretty much need instructions on how to shift and use the four-wheel drive.

Not sure if this matters but it's a-
1991 YJ
4.0 liter
5spd. manual
all stock

Thanks everybody

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Old 06-22-2012, 08:07 PM   #2
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pull the small shifter from its most forward slot back one spot and you are in 4hi. then make the z gate and the next slot is neutral so go past that notch to the very back and you are in 4lo. just make sure your trans is in neutral when you shift it or the t-case gets tough to shift. when coming out of 4 into 2wd, i always roll it backwards about 10 feet but that could just be habit from other 4wd vehicles i owned that required it, i am not sure a jeep does


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Old 06-22-2012, 08:13 PM
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Do I do this with the car stationary or moving forward?

"when coming out of 4 into 2wd, i always roll it backwards about 10 feet." When do you do this, before, during, or after shifting the transfer case?
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Old 06-22-2012, 08:20 PM   #4
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Stationary with jeeps, or at least very slow moving.
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Old 06-22-2012, 08:25 PM
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"when coming out of 4 into 2wd, i always roll it backwards about 10 feet."
When do you do this, before, during, or after shifting the transfer case?
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Old 06-22-2012, 08:26 PM   #6
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In the manual for my TJ, it says there's no problem shifting into 4hi when moving unless you are going to fast (I don't remember the speed). For 4lo it said to be rolling 2-3 miles per hour, and be in neutral.
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Old 06-22-2012, 08:28 PM   #7
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Quote:
Originally Posted by JimsJeep321 View Post
"when coming out of 4 into 2wd, i always roll it backwards about 10 feet."
When do you do this, before, during, or after shifting the transfer case?
From a stop with the t-case shifter in 2wd.
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Old 06-22-2012, 10:51 PM   #8
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yup, /\

and i don't shift into 4 while moving either. don;t know why, i just don;t like the grinding noises trans and t-cases make sometimes when you do that
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Old 06-22-2012, 11:18 PM   #9
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You have to be rolling when shifting into 4WD, otherwise it might not shift into gear. The internals of the transfercase have to be moving in order to shift, sometimes you get lucky and everything is lined up, other times you do not. The instructions conveniently found on the opposite side of your drivers side sun visor should tell you that you need to be rolling at 5mph or less.

The same goes for shifting out of 4WD, you need to be rolling forward. The grinding noise is perfectly normal, and it will not hurt your transfercase in any way.
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Old 06-23-2012, 12:30 AM   #10
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Pulling a lever is hard......

Just liek reading..

... sorry, in a mood tonight,....
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Old 06-23-2012, 12:43 AM   #11
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Quote:
Originally Posted by busemans
i just don;t like the grinding noises trans and t-cases make sometimes when you do that
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The same goes for shifting out of 4WD, you need to be rolling forward. The grinding noise is perfectly normal, and it will not hurt your transfercase in any way.
That's weird, I've never had any grinding noises. But it does say in the manual to be rolling when you do it, so I highly doubt it will hurt anything.
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Old 06-23-2012, 12:56 AM   #12
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Lol. I love rookie questions. 2 hi to 4 hi you can do while driving( just take your foot off the gas while you do it, you dont have to push in the clutch) Dont be goin faster then 80 km/h. No idea what that is in yankee. Lol. And to go from 4 hi to 4 low. Put it in nuteral be totally stopped and pull it into 4 low. And ease off the clutch cuz its gunna be torky
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Old 06-23-2012, 12:57 AM   #13
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Grinding noise is not normal for the record. Should be more of a klunk. No grinding.
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Old 06-23-2012, 01:00 AM   #14
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Originally Posted by JReed615
In the manual for my TJ, it says there's no problem shifting into 4hi when moving unless you are going to fast (I don't remember the speed). For 4lo it said to be rolling 2-3 miles per hour, and be in neutral.
You can go from 2wd to 4hi at pretty much any speed. The front drive shaft is always spinning same speed as the rear (unless you're running lock-out hubs), just not receiving power from the transfer case until you engage 4hi. I seem to recall something like 55mph is the upper end...of course if roads are good enough to travel at that speed, you really don't *need* the traction of 4wd and should just be in 2wd.

But going from 4hi to 4lo, or back, is 2-3mph as mentioned above.
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Old 06-23-2012, 10:03 AM   #15
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I always lock mine in to 4hi or low while stopped. But you can lock into 4hi on the fly. 4lo you need to be either going super slow or stopped and be in neutral. 4hi you can go up to 55mph 4 low I believe no more then 15 or 20mph
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Old 06-23-2012, 10:40 AM   #16
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You should be able to take off in 2nd gear in 4low. Using 1st for slow inclines, decants, and when more power is needed.
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Old 06-23-2012, 10:54 AM   #17
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I usually run in 3rd gear in 4 lo.
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Old 06-23-2012, 11:17 AM   #18
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Other then shifting into 4x4 there's other tips I'm no seasoned Wheeler just started myself a year ago. One thing I learned is that when ur crawling on trails in a manual is first gear is what u will spend most of ur time in. I'm sure there r more thongs 2 learn and I'd like 2 learn the right way so I'm open to all the info I can get
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Old 06-23-2012, 01:00 PM   #19
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Hey I may have missed it in a post but didn't see anything that said that Jeep 4wd should not be used on dry pavement. tires have to be able to slip. You dont want to screw up the transfer case etc.
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Old 06-23-2012, 01:08 PM   #20
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Hey I seen everyone got you on track but I have to say what I didnt see dont drive in 4wheel drive on the street. It will cause things to bind and break if your not careful.
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Old 06-23-2012, 01:09 PM   #21
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Hey I may have missed it in a post but didn't see anything that said that Jeep 4wd should not be used on dry pavement. tires have to be able to slip. You dont want to screw up the transfer case etc.

you beat me to it lol.
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Old 06-23-2012, 02:18 PM   #22
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You should be able to take off in 2nd gear in 4low. Using 1st for slow inclines, decants, and when more power is needed.
I do that in 2wd!
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Old 06-23-2012, 05:13 PM   #23
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Shoot you make a turn in 4 on pavement you can say goodbye to your vaccum shift motor.
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Old 06-23-2012, 08:42 PM   #24
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Hey I may have missed it in a post but didn't see anything that said that Jeep 4wd should not be used on dry pavement. tires have to be able to slip. You dont want to screw up the transfer case etc.
This is true if running a np231

But if ya have a np242 its no problem
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Old 06-23-2012, 08:44 PM   #25
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You should be able to take off in 2nd gear in 4low. Using 1st for slow inclines, decants, and when more power is needed.
I can take off in 5th if I wanted to... In 2wd high too
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Old 06-23-2012, 11:43 PM   #26
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mine shifts fine into both 4hi and lo when i am stopped
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Old 06-24-2012, 12:09 AM   #27
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I can take off in 5th if I wanted to... In 2wd high too
I have a lot of work to do then..
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Old 03-13-2014, 07:34 PM   #28
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Hey guys, my apologies for bringing this thread back to life, but I thought it was better than starting a brand new thread. Just a quick question about shifting into 4Lo. Shifting into 4wd in my Jeep(95 sahara 5spd) is kind of funny, instead of the T-case shift knob "popping into gear", its more of a sliding motion. Anyways long story short, when shifting into 4Lo, do you have to pull the knob all the way back, then pull it to the side and back some more? I don't think I completely understand the 4wd shifting motion.
I know it sounds really newby and stupid. My dad's 79' Ford is a lot easier to understand, its shift forward for 4Hi and backward for 4Lo.

I would appreciate some clarification of the proper procedure of shifting into 4Lo (I already know how to shift into 4Hi and I know how shifting into 4Lo requires minimum speed with the clutch in)
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Old 03-13-2014, 08:19 PM   #29
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yes that is correct. from 2hi pull back as far back as it will go, then to the right and pull as far back as it will go again
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Old 03-13-2014, 08:38 PM   #30
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I'm gonna go outside and try it right now. Thanks

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