4Hi problem

I have a 22 OR with 3000 miles. When I reverse in 4hi, it struggles to move and then it drives without an issue. Does anyone know what it could be?

 

Not sure about 3rd gens, but the 2nd generation, when in 4hi, the center diff acts like a limited slip…so it binds on corners. So it will be hard to drive it around tight spots, forward or reverse. I imagine the 3rd gen is the same way.
Try switching to 2wd and see if it is fine.

 

Welcome to the forum. Are you driving in 4 on dry pavement? If so it will bind on turning, if you are going straight then it may be the rear drum brakes as some people have said that they experience brake lockup.

 

https://www.tacomaworld.com/threads/rear-back-tire-slipping.784366/

I swear I think someone is trolling and making new accounts every day just to post some form of this question.

 

3rd gen, 2nd gen, 1st gen, there is no center diff and thus no "acting like a limited slip". The front and rear outputs from the transfer case when in 4wd are mechanically coupled together, 1 to 1.

 

Maybe it’s a social experiment? Last one was female this guy is a male.

 

I didn’t know we were allowed to call people male or female anymore

 

Thanks! It was on a snowy parking lot and I was going straight in reverse. I took it out of 4hi and back to 2wd and the issue stopped. I am new to trucks so I don't have much experience with them other than what I read in forums.

 

Bear with me. I am new to trucks. I will see if there is a post about these questions before I create one.

 

In all likelihood, even though you were on snow you had high traction. There must of been some bind ( front and rear driveshafts are torsioned in opposite directions ) in the system. Once the bind is released with a wheel spinning, the issue will go away.

This is common on selectable 4 wheel drive systems. When the transfer case is in 4wd mode, it locks the front and rear axles together. When a corner is made the axles will normally travel at different speeds, but in 4wd they can't, so there has to be tire slippage to compensate. As a result of this, high traction and 4wd can have funny outcomes, like you described.

 

Using 4wd to get out of a snowy parking spot when the rest of the parking lot is dry pavement can be tricky because the drivetrain will bind up when turning on the dry pavement. I tend to use Auto-LSD in these situations. It is engaged by pushing the traction control button while in 2hi.

https://www.youtube.com/watch?v=4aaMNFbagmQ

https://www.tacomaworld.com/threads/3rd-gen-traction-control-modes-explained.530695/

 

What happens if you are in 4WD hi, and you long-press the Trac Off?
I'm new to the Tacoma too, coming from Subaru AWD in and Outback where you don't need to worry about the surface?
I don't think any questions here are dumb for people like us. Is there a simple to understand summary and when you'd want to use the different modes / features. I would benefit by that. Thx.

 

No traction control and no vehicle stability control.

 

Right up at the top of the 3rd gen page.

https://www.tacomaworld.com/threads/3rd-gen-traction-control-modes-explained.530695/

Edit: It may, or may not, be simple to understand.

 

Don't use 4x4 where traction is good, even light snow over pavement doesn't normally require 4X4. When you turn corners, you are putting the drivetrain in a bind because each of the 4 wheels is taking a different path and need to turn at different speeds. In 4X4 you are forcing the wheels to all turn at the same speed. Something needs to give. Normally one or more wheels will slip slightly on the ground. But if traction is too good and they can't slip your truck may not move. Or something may break. This shows up a lot more in reverse.

Many people today are used to newer AWD vehicles that can be driven on any surface. They are complex systems that send power to all 4 wheels but will allow them to turn at different speeds. AWD is great for wet roads or light snow. Even mild off-road situations. But in harsher conditions don't work well. True 4X4 is a dumb system that hasn't changed in over 100 years. It works in really harsh conditions, but isn't meant to be used like AWD. I engage 4X4 sparingly and only as needed to get through tough patches. If you live in snow country and want power to all 4 wheels all the time you need AWD.

Turning a corner on wet grass in 4X4. If you look closely, you can see where 3 of the 4 wheels slipped slightly on the ground. The inside front wheel had the least distance to travel, but because they were all turning at the same speed it spun the most. This is normal. Had I tried to make that move on pavement it is possible to bind everything until it won't move, or something breaks.

 

are you trying to turn while in 4hi?

 

I think i know what traction control does for you. It pulses the brakes to stop wheel spin and would be useful, if for example you are moving out onto a highway, but the wheels spin on a slick surface and you make it into the road, possibly late enough to be T-Boned without it.

Stability control is going to modulate the brakes to help you stay pointed and moving in the direction you are steering in.

So yeah coming from an AWD system like in the Outback, should I just use 4x4 when say the snow is deep or there is ice, or a hill is slippery and I want to strictly go straight? I will likely never go off road with the truck.

I appreciate the backgrounder.

 

Don't use 4hi in situations where the truck gets high traction. Put it back in 2 wheel drive and back to 4hi once back on slick surfaces.

 

You say you won’t off-road but you have a rig that’s very capable and the bug will bite you.
I’m anal but I still take it out to lightly off road. I use a class 4 road here it’s “un maintained” just to use features.
It’s a lot of fun can’t imagine doing some the trails seen here on TW hardcore stuff.
I need mine for work tomorrow!

 

How about shemale or Maleshe