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Old 01-02-2011, 09:56 PM   #1
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Stock tj question

Ok, this might be a dumb one but when I put my jeep in 4 wd it says part time. What does this exactly mean if anyone could tell me please and what are my tires actually doing? By that I mean, is one in back turning and one in front or is the other in back sometimes pulling also. Please give me some info if u could. Stock 2001 4.0 automatic

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Old 01-02-2011, 09:58 PM   #2
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Its just jeeps way of saying your in 4 wheel drive. instead of it saying 4x4 on the panel.

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Old 01-02-2011, 10:01 PM   #3

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X2 you are in 4 wheel drive when it lights up.
2000 Sahara, 3.5" Rubicon Express Lift, 1" spring spacer & 1" Body Lift, 33" or 35" BFG Mud tires, Front & Rear ARB, Rancho 9000 shocks, UCF Ultra High Belly Up

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Old 01-02-2011, 10:05 PM   #4
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10 4 thanks, didn't know if there was more to the "part time" thing than that
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Old 01-02-2011, 10:07 PM   #5
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My 04' says AWD
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Old 01-02-2011, 10:08 PM   #6
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part-time means it has no center diff. the prop shafts to front and rear are locked.
when driving, when you making a turn, not only the wheels on the outside is turning faster than the ones on the inside, the front wheels are turning faster than the rear cuz front wheels have a bigger turning radius. by locking the prop shafts, theres no speed difference and thats why when you turn tight, the whole thing would hop and jump.
full-time 4x4's like Subaru's have a center diff which let the prop shafts turning at different speeds when making a tight turn.
part-time is used only when the drive wheels lose grip, full-time is always in 4WD mode.
however with full-time unless the vehicle has very good limited slip diffs all round, its still can get stuck if the front to back grip has a huge difference.
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Old 01-02-2011, 10:10 PM   #7
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keep in mind "part-time" 4wd is only to be used on loose or slippery surfaces, not on dry roads. all 4 wheels will turn at the same speed and this can cause great stress on driveline parts from binding on dry pavement.
My battle with Chrysler over getting my Jeep repaired under warranty:
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Old 01-02-2011, 10:18 PM   #8
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The only light that comes on is part time. What ur saying is that it is actually in full four wheel drive at certain times though? Sorry, just finally at the right spot to get this straight and learning lots of stuff I never knew
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Old 01-02-2011, 10:26 PM   #9
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Ok once I read ur threads over I understand better. I think I understand what's going on. I'm just trying to figure out if I need to get a locker for my rear end. I don't think it's a necessity, I go thru mud here and there, not water, or over any rocks or anything. I live in south Louisiana. The only rocks are on our driveways and roads

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