2nd gen with auto hubs
01-12-2005, 04:11 PM
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2nd gen with auto hubs
I have a 91 with auto hubs and I can't shift into 4wd on the fly. The manuall says: "If it doesn't shift easily into 4wd, come to a stop and then shift." This seems kinda odd that it is kindof soposed to shift on the fly if it want's too. Anyway, I always have to stop and I was wondering if the other guys with this setup have to do the same. (By the way, shifing out on the fly is no problem).
01-12-2005, 04:20 PM
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If it's the ADD system, it should shift into 4HI up to like 35 mph. I usually come to a stop to shift into 4LO. If you do have ADD and it won't shift into 4HI while moving, you might want to have it checked out...
01-12-2005, 05:28 PM
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You might wanna check all your hoses and things of that nature...mine will shift in and out up to 40mph...but I rarely do it at that speed, if I feel like I need to I just slow down to about 30 and do it. I always come to a complete stop to shift into 4L though.
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01-12-2005, 09:24 PM
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Originally Posted by Robinhood150
Do you have auto hubs or ADD? If you have auto hubs you most certainly cannot shift on the fly.
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01-12-2005, 09:43 PM
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Originally Posted by SoCal4Running
By the pic on your page "the oldest pic" you have ADD hubs not AUTO hubs.
01-12-2005, 09:47 PM
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Honestly I do not know. What it does mean is that there are no clutches, springs or other things to break in the hub. An ADD hub is a simple drive flange that is always connected to the axle shaft.
01-12-2005, 10:14 PM
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i dont think any 2nd gen runners came with true auto hubs. If you try to shift into 4hi and your add is not working you probally will hear the sound that it makes when you try to shift without the clutch.
01-12-2005, 10:19 PM
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Originally Posted by Yamaha+Toyota=Fun
i dont think any 2nd gen runners came with true auto hubs. If you try to shift into 4hi and your add is not working you probally will hear the sound that it makes when you try to shift without the clutch.
01-12-2005, 10:24 PM
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Just drive down a gravel road at about 25 mph, and yank that stick back. You'll never know untill you try it. I dont think your transfer case will explode if you just try it once. I have manual hubs, but sometimes i gota pull pretty hard to get it into 4hi, and push even harder to get it out.
01-13-2005, 04:19 AM
#16
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It also makes a difference whether you have synthetic oil in your transfer case and the temperature of the oil. 75-90w (assuming you have a manual tranny) gets pretty thick when cold and synthetic makes everything work better.
01-13-2005, 04:26 AM
#17
You do not have auto hubs, you have ADD.
Auto hubs were from '84 to '89.
http://www.4x4wire.com/toyota/tech/autohub/
They are bad bad bad hubs, stay away from them
They disengage on you when you back up on a trail.
Oooops, years corrected
Auto hubs were from '84 to '89.
http://www.4x4wire.com/toyota/tech/autohub/
They are bad bad bad hubs, stay away from them
They disengage on you when you back up on a trail.
Oooops, years corrected
01-13-2005, 09:53 AM
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Corey, you mean from 86-89.
I thought I heard of some people who have auto hubs on early 2nd gens though. Anyway, if you have ADD you should be able to shift on the fly up to 50 mph (according to my owners manual). Come to think of it, I wonder if the speed is different for manual trannies?
But again, if you have AUTO hubs, you cannot shift on the fly.
I thought I heard of some people who have auto hubs on early 2nd gens though. Anyway, if you have ADD you should be able to shift on the fly up to 50 mph (according to my owners manual). Come to think of it, I wonder if the speed is different for manual trannies?
But again, if you have AUTO hubs, you cannot shift on the fly.
01-13-2005, 10:13 AM
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Check your tire pressure too. If there is much difference between front and rear rolling radius, the case won't want to shift.
Otherwise, the above tips about easing up on the throttle (or push in the clutch even) are good. I can shift mine into 4hi at any speed.
Otherwise, the above tips about easing up on the throttle (or push in the clutch even) are good. I can shift mine into 4hi at any speed.
01-13-2005, 12:09 PM
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Originally Posted by 4RunnerKid
it should shift into 4HI up to like 35 mph. I usually come to a stop to shift into 4LO.
