Pulling to the Right in 4H

[CO_Fletch]

I have the V6 with selectable 4x4. Up to this point I have only driven in 4wd when offroading/rough roads. We received our first snow this week and have been in 4H for the past several days both on hard packed snow and dry pavement.

It seems like when I am on dry pavement and giving the vehicle gas in 4H, it pulls slightly to the right. It's barely noticeable but today I switched from 4H to 2H and noticed that the slight pulling seemed to stop when 4H disengaged.

I'm fairly certain it is not an alignment issue since it doesn't pull in 2H and I had it recently aligned after my lift.

Some other items of note:

When I purchased the vehicle, the prior owner had replaced the left CV axle but not the right.

Last week I was checking CV boots and noticed a slight play in the CV axle - I was able to slide it in and out maybe 1mm or less whereas the left CV was tight with no play.

Would this possible CV difference create the pulling? If so, should both CVs have been replaced at the same time? Should I replace just the right or both now so they are matched? Is there something else I should check for that might create the pulling. I can deal with the pulling, am I potentially creating damage as is?

Thanks for the help!

Jeff

 

[fourwd1]

if I remember correctly the V6 has a part-time 4WD system which would act strangely on a hard dry surface due to the drivetrain binding.

 

[m85476585]

if I remember correctly the V6 has a part-time 4WD system which would act strangely on a hard dry surface due to the drivetrain binding.

No, the 4th gens all have a multi-mode system, or some variation of it. No binding here! 5th gens except the Limited trim are part time.

Have you checked your tire pressure?

It seems like a difference in CVs could possibly cause it. If one of them has more friction or doesn't flex as well that might do it?

 

[CO_Fletch]

Have you checked your tire pressure?

Good idea, I forget about that. With the recent cold weather snap, it might be off. I'll check it when I get home tonight

 

[Tooltime19]

If im reading correct, it looks as if you have a small lift on your rig. If thats the case, you and I are running just about the exact same setup. If so, Im still using stock upper control arms. With this lift we are nearly at the max limits of the Caster settings. This change in caster angle could cause your issue. I have slight Torque steer from the front drive system, but mostly under aggressive acceleration. Its no big deal. If I raise any more, I will need new upper control arms and that will eliminate this issue.
Also as another poster mentioned, be sure a check the air pressures all around and keep them perfect. Keep us posted. Good luck.
:cheers:

 

[Greydog]

My 07V6 has had some light torque steer in 4H pretty much since new.

I don't think it's the CVs, maybe alignment settings are aggravating it some but part of it seems to be a natural pull under moderate to heavy throttle.

 

[BlackWorksInc]

Considering that on V6 Multi-Mode systems the ADD engages a collar on the passenger side axle shaft to physically engage both axles to the transfer case (they're not locked, it just links the driver's side axle shaft with the differential) it could be a natural function of the system?

 

[CO_Fletch]

The air pressure was only off 1lb between the two front tires so I don't think that is the issue. Probably the fact that I have a lift with stock UCA as [MENTION=44046]Tooltime19[/MENTION] mentioned. It's under acceleration that I notice it most, similar to what it sounds like [MENTION=19164]Greydog[/MENTION] experiences. Since it sounds like others have noticed this, I'm not going to worry about it too much. Thanks for everyone's input!