REAR DIFF FAILURE! - Not impressed.

unless you bought the base model...you prolly got the same rear end as a taco.

 

What do you mean or should I ask what is the rear diff breather mod? Please explain in detail? I'm new!

 

Clearly the issue is that you are measuring in kilometers instead of miles.

 

I was offroading and coming up a steep bypass on the trail. Halfway up the truck just bonked and went out. I heard the same bang as yours and clunk with every rotation of the tire. My truck wouldnt move in and forward gear, nor reverse, and it would roll in Park .

My understanding is that the gears used on the FJ and Taco arent as strong as people think, theyre some cheap Indonesian gears. The dealership gave me a new gear set and carrier assembly. I put stock tires on before I went in and it went okay. While they were working on the truck they found mud in my brakes and all over the undercarriage, in addition to large dents on my skid plates from rocks, and they knew I offroaded it but replaced it anyways. When I got the truck back the dude told me not to offroad it bc warranty doesnt cover that kind of damage.

2 days after I got it it started knocking somewhere along the driveline at takeoff while in reverse or drive. I took it back in and they wouldnt do shit.

Now I got my FJ, and yes I know the platform of the two vehicle is very similar/identical on many levels. What killed my taco was the abuse I put it through, which will b avoided with this new vehicle so it should work out fine.

 

Dang, stuff breaks we all know that, but the rearend just doesn't seem to be an issue for these trucks. I have only read a couple of problems on here, more having to deal with the real axle seals other than the diff gears themselves. How many members can you name that have had the diff go?

 

Well I know Sara from All Pro had her gears go out and she had them replaced several times already. HBMurphy also had his go out and he was telling me that over half the people he wheels with have encountered failed gears and have had to replace them.

 

wow. i have seen alot of stout rearends broken ie d60's FFgm14 even a rockwell but never seen a toy 8 broken personally

 

I think we're on the wrong forum to here about it. I love TW, but you gotta admit the TTORA is much more offroad oriented than we are, and Im sure you'd hear alot more stories over there.

 

This is true.

 

i come from texas4x4.org. and was tallkin more about any toy rearend or solid front that is trailer out and wheeled hard.. if it breaks it goes back on trailer.. but you are right. alot of the ppl on here dont wheel their rigs hard cause they gotta drive them home and work etc. but still have never seen a broken rear with my own eyes...seen a few fronts toasted.. and i broke my t case.

 

I've heard too many stories of shit breaking while off-roading. Manny brings up a good point as he points towards HB & Sarah @ All-Pro. Those 2 wheel real hard and well, shit breaks. Its life nature of off-roading.

I can't afford to replace damaged things on my TACO. I love to just do normal light trails as its what I love. I don't have it in me to showcase my $35K Tacoma over a bed of rocks with high risk of damage. 2wd or 4x4, I'm not interested.

Its a shame everytime I hear of a Taco owner breaking something. Most of the time its from the Owner taking it out to off-road it. Heck, I damaged my Tacoma when I first got it off-roading it. Repainted and repaired. That shits not going to happen again.

I'm over that when I had to fork over a repair bill.
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Sorry you are having issues Hemi... I hope they will resolve it for you to your satisfaction.

 

spider gears in my rear diff sheared off my 2010 4x4 trd sport with stock tires and the dealership said the manufacturer will use an impact gun instead of a torque wrench which causes the gears to be way too tight breaking off the teeth, i had less then 5,000 miles on my truck when this happened but they threw in a new rear end with no problem

 

I can totally believe the you trash the gears going up a mountain hard, dumping the clutch under load, etc. But just being pulled out with the stock bfgs in slick mud spinning in reverse? Did it catch on something while being pulled out and then you heard a bang? Give us something...

 

Are you a Toyota Rep on here trying to make us get FJ cruisers? Tell us the truth since are you stirring the pot saying something on your tacoma broke.

 

First off, to the losers who suggest I don`t have a Yoda, get a life. (I posted the pre delivery inspection sheet in another thread)
Anyhow, I have a theory. My truck has never shifted into 4 wheel drive properly since new, and every time I shut off the truck, it would go from 4L back into 4H. (beeping with the knob left in the 4L position) So every time I would start er up, I had to put it in neutral, turn the dial to 4H, and back to 4L. I was mildly stuck at the time, so I was being pulled backwards. I think what may have happened, was the truck taking itself out of 4L when I shut it off, the rear diff lock was automatically dis-engaging. So when I put the truck in gear and gave it some throttle, I think it may have tried to engage. Thing is, I never took the truck out of 4L, and I never disengaged the locking diff, so I wasn`t even thinking about that. This whole situtation may be a result of the original issue with the 4wd system not shifting correctly.
After the banging started, the guy that pulled me out, towed me to some solid ground, and I was able to baby it to the highway....then roadside assistance. The strangest part was when it broke, hardly any load, soft mud.
The dealer is being highly un-cooperative at this point, we`ll see what happens.
I understand some people want to think I was abusing the truck, or I am making this up. As I said before, this is my 6th truck, always off roaded, never even popped a tire..... It was soft mud, and something failed mechanically, that`s the truth. It probably is related to the diff lock.

 

Do you have problems switching from 2H to 4H ? or from 4H to 4L?
what happens if you leave truck off while in 4H, will it stay in 4H when you restart the engine ?

 

I mostly had issues with it not wanting to go from 2H to 4H. It would disengage very slowly as well. I cannot recall a situation where it went from 4H to 2H while shut off, but the thing was so un-cooperative all winter, that I may not remember.

 

Yea I am wondering if it is possible that your shift fork is misaligned or even bent. You said Toyota replaced your shift actuator, did they replace one in Transfer case or did they replaced ADD actuator ( I know I did read but I dont remember)
BTW. You are probably right about rear diff failing due to 4wd state being in the middle.
EDIT: Also do you remember if you had 4L turning off on its own before the replacement?

 

Dont forget

...Vibration is inheritant to vehicle.

Drove new vehicle, vibration appears to be normal as our 10 did the same.

vehicle operating "with in" manufacturer spec.