4.88 regear problems?

Would appreciate any input on this

I just got 4.88 revolution gears on my 23 Tacoma and I have a whine when decelerating from 45-25 mph. It’s barely noticeable. But it’s there. Shop says it’s normal and that these trucks whine.

it isn’t really that bad but I was wondering if anyone else is experiencing this?

 

Take it to a second shop for opinion.

 

4.88 Nitros I’m getting the same howling. Premier west gear did install and says it’s normal. Anyone have their 4.88 not howl ?

 

It’s been a very long time since I have done anything with a differential but I was always under the impression that if they whined it was because of a clearance issue of the ring and pinion gears.

 

If you want an honest professional opinion call ECGS…East Coast Gear Supply

 

ya same here. But revolution says there should be no whine at all. But then again when I spoke to someone else form revolution they said it’s normal for a little whine but only common in Toyotas

 

I have 10k on my 4.88s from Revolution Gears. No gear whine here at all. What I will say is that after your regear, you’re gonna be paranoid about any sound that sounds off. At least I was. Worse case, take it back to the shop that did the regear for you. I know I had to take mine back once for the front diff not seated properly.

 

Lots of gears whine, including a lot from the factory

 

ya i took it back..they said everything is good..and that the whine is normal. your right.. been paranoid for noise since i got it done.. i may be overthinking it. but i paid for a service..and i want to know if the whine is normal or if the service was not done correc.t because if it wasnt done correctly they got to re do it.

 

hope ur right.. my stock gears didnt whine..not that i noticed at least.

 

My diffs are stock, and the rear definitely whines.

 

Revolution 4.88’s here no whine

 

I had a noticeable whine when I put 5.29 Yukon gears in my '13 reg cab. They said it was normal. It got a little better after break in and the gear oil was changed. Did tons of wheeling in that truck. After many years and miles the sound never changed, so I didn't worry about it. Picked up a '16 a few months back and put polished Nitro 5.29 gears in it. They have been silent.

 

One more anecdotal report:

I have 25k miles on Yukon 5.29 gears that were installed by EGSC (highly reputable gear shop), and I had some minor whine/noise at first on deceleration between 65-55 mph. Not sure how exactly long it lasted, but I don't hear it at anymore. I have the 8.75" E locker rear diff, and while mine never made noise from the factory, I'm told this particular model/design is more prone to noise than others.