Excessive whine and front end vibration after installing TOD-off switch

[VXorado]

Who said this fella has manual hubs

Running TOD off without manual hubs could have caused the issue. The front axles/wheels turning the driveshaft? Doesn't seem like that would be good for the t-case.

[vt_maverick]

I'd worry about running manual hubs without a TOD switch. What happens when TOD tries to shift power to the front wheels when the rear wheels are breaking loose? I would think you'd lose power to the rear wheels while not gaining traction up front which could lead to a loss of control.

Just a thought.

[Triathlete]

I have been running manual hubs without a tod switch for the paat couple years with no problems. No different than driving any other rear wheel drive vehicle.

[blacksambo]

I'd worry about running manual hubs without a TOD switch. What happens when TOD tries to shift power to the front wheels when the rear wheels are breaking loose? I would think you'd lose power to the rear wheels while not gaining traction up front which could lead to a loss of control.

Just a thought.

I like this thought, in snow/ice conditions etc.

[Scott Larson]

Hmmmm, sarcasm...

[blacksambo]

Hmmmm, sarcasm...

Absolutely not! I think he' s got a point there.

[HeckaTrebeka]

Hey guys, so I just got back from my camping trip... Thanks for all the responses! I decided to take the VX with me on my trip because the vibration went away and it was starting to go back to normal. I noticed that when I was on a hill at a stop light and going upward, I hit the gas and then the whole issue just went away... really perplexing. I'm thinking that the issue had to do with the 4Lo not being completely disengaged as was previously mentioned in this thread. Along with that, there is no vibration or whining noise anymore. I'm going to look into the front end before I ever use 4Lo again just to make sure it's lubed up good.

I don't have manual hubs as this VX is bone stock. I just thought that, by adding the switch, it would take care of the pulsing feeling. I don't think that this TOD switch really did anything though, as I found out that the switch was incorrectly wired in the first place and was still only connecting the blue wires together anyway.... hahaha.

Just for interest sake, what is the size difference between the 3 tyres, and the spare??

I believe that the spare I have on here is about 1/2 to 1 inch smaller than the rest. Plus, the tire place installed it on the rear passenger side... I asked them if it would be a better idea to install on one of the front sides because of the TOD system but they said no.. They were the stupid ones in the first place to puncture the original tire...!!

[MSHardeman]

Glad that it worked itself out.....sort of. It does sound like you where stuck in four low, and that when you were on the incline some things finally disengaged and dropped back into four high

For future reference I have read somewhere here on the site that it is best to put a spare, or different diameter tire, on the front of the VX. If the two back tires are a different size the TOD system reads the different speeds of the tires (due to their differing diameters) as wheel slippage and pushes power to the front wheels to stop that slipping. Since the wheels aren't really slipping, just turning at different rates, the TOD will continue to read that and continue to push power to the front wheels. When the TOD shifts power to the front wheels it really isn't a constant power, it tends to "pulse" the power forward. This pulsing is what creates the jerking motion that some describe when they talk about the TOD freaking out.

If you ever have to put a spare on your VX, and it's one of the rear tires, the best thing to do it to take one of the tires off of the front, place it on the rear, and put the spare on the front. PITA, I know, but your TOD will be much happier until you can figure out a more permenant fix.

[vt_maverick]

For future reference I have read somewhere here on the site that it is best to put a spare, or different diameter tire, on the front of the VX.

I believe this is what the owner's manual recommends, although it doesn't go into why.

[Triathlete]

It is also a good idea to find a dirt area a couple times a year and engage the 4l and drive around a little. If the system had never been used before by the previous owner that may have contributed to it sticking and not fully disengaging.

[Triathlete]

I believe this is what the owner's manual recommends, although it doesn't go into why.

Yep, its either in the manual or on the spare...don't remember which.

[blacksambo]

It is also a good idea to find a dirt area a couple times a year and engage the 4l and drive around a little. If the system had never been used before by the previous owner that may have contributed to it sticking and not fully disengaging.

Good advice, here.

[samneil2000]

I think putting the spare on the back has more to do with the limited slip diff in the rear where the front is open. I believe TOD only senses slipping at the rear axle and not side to side. I've been wrong once or twice though.

[HeckaTrebeka]

I think putting the spare on the back has more to do with the limited slip diff in the rear where the front is open. I believe TOD only senses slipping at the rear axle and not side to side. I've been wrong once or twice though.

I definitely agree. I kept asking the original owner this and he had no idea... he wasn't super into vehicles anyway, he just thought this one looked cool and unique(which, YEAH). Anyways, the tire company(who punctured one of the tires and started this whole mess) said that the spare should never be on the front... I was thinking the opposite because of the TOD system and I asked them about it. I guess I should know better than to ask a dummy a question.