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Jerky when in 4wd?

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Old 01-28-2013, 09:42 PM   #1
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Jerky when in 4wd?

I have a 99 tacoma trd with 99k miles on it I just got a week ago. When I put it the truck in 4 high and make a sharp, slow left or right turn it almost feel like the tires are rubbing and the truck kind of lightly lurches forward? It does not do this in 2 high. What could be wrong?
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Old 01-28-2013, 09:44 PM   #2
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did you have the 4wd engaged on pavement? if so than the 4wd system was binding
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Old 01-28-2013, 09:48 PM   #3
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Yes, I was on the pavement when I was turning sharply/slowly but it was snowing out so I engaged the 4wd in case the roads got slippery. And just realized I posted this in the wrong section.
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Old 01-28-2013, 09:49 PM   #4
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Quote:
Originally Posted by Standup View Post
I have a 99 tacoma trd with 99k miles on it I just got a week ago. When I put it the truck in 4 high and make a sharp, slow left or right turn it almost feel like the tires are rubbing and the truck kind of lightly lurches forward? It does not do this in 2 high. What could be wrong?
When you are in four-wheel mode, both tires are driving at the same rate, when you turn, whatever tires are on the inside of the turn rotate slower that the ones on the outside, but they are still wanting to spin at the same speed, hence the 'jerkiness' you describe. Because of this, it's very important to the life of your drive train to only use four wheel drive on surfaces that allow the tires to break traction if they need to. If you drive like that on hard surfaces, this will cause the drive-train to do what's called 'binding', a nasty thrashing of your drive-train which can ruin it.
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Old 01-28-2013, 09:50 PM   #5
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its completely normal...unless it is really slippery out..I would be careful about engaging 4wd on pavement.
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Old 01-28-2013, 09:52 PM   #6
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So pretty much only engage it on snow or ice?
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Old 01-28-2013, 09:54 PM   #8
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Quote:
Originally Posted by Standup View Post
So pretty much only engage it on snow or ice?
no you can engage it whenever. Just don't try and turn unless the tires can slip (like in soft dirt, ice, snow, etc.)
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Old 01-28-2013, 09:57 PM   #9
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Quote:
Originally Posted by Standup View Post
So pretty much only engage it on snow or ice?
Well, yeah, off-road in dirt or mud, snow and ice on roads is OK, just have to be aware of what the road conditions are suitable for four-wheel drive. If the conditions improve or start to dry, put it back in two-wheel drive. Basically use four-wheel drive on pavement only when you absolutely have to. Like Pete said, I wouldn't turn too sharply either, it's just tougher on the drive-train.
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Old 01-28-2013, 10:11 PM   #10
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This belongs in the 1st. Gen section since the OP has a 99
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Old 01-28-2013, 10:17 PM   #11
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Quote:
Originally Posted by MonkeyProof View Post
This belongs in the 1st. Gen section since the OP has a 99
thank you grumpy cat
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Old 01-28-2013, 10:20 PM   #12
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Meh
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Old 01-29-2013, 12:12 AM   #13
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I usually eat jerky when i'm in 4 wheel drive. but never on the pavement.
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Old 01-29-2013, 12:16 AM   #14
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The tight u-turns and fast tight 3 point turns are not for 4 wheel drive.

More radius turns when engaged.
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Old 01-29-2013, 12:17 AM   #15
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Quote:
Originally Posted by bullaculla View Post
I usually eat jerky when i'm in 4 wheel drive. but never on the pavement.
That's what I thought the thread was about to be honest
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Old 01-29-2013, 12:34 AM   #16
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Quote:
Originally Posted by acdronin View Post
When you are in four-wheel mode, both tires are driving at the same rate, when you turn, whatever tires are on the inside of the turn rotate slower that the ones on the outside, but they are still wanting to spin at the same speed, hence the 'jerkiness' you describe. Because of this, it's very important to the life of your drive train to only use four wheel drive on surfaces that allow the tires to break traction if they need to. If you drive like that on hard surfaces, this will cause the drive-train to do what's called 'binding', a nasty thrashing of your drive-train which can ruin it.
That's why you have a front & rear diffs.
The problem is caused by the front wheels covering more ground than the rear wheels on turns.
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