New gears noisy ??

[DCrocs23]

Yea, at this point i am considering talking to the shop about getting rid of the Yukon gears and going a different route which from all i see will be the Spicer gears.. Thanks for the info.

The info I gathered from months of dealing with this, is it’s only the 4:88 Yukons that are doing this, even Yukon is aware of the problem. 4:56’s no problems, unfortunately it cost me an xtra 3 grand$$. I read a lot of threads afterwards saying only to put the Spicer gears in your Jeep. Live and learn I guess, good luck to you.

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[jbcrane]

I just had 4.88 Spicers installed 700+/- miles ago and their quiet as church mice. Couldn't be happier. Sorry you had to go through this...

 

[Old Dogger]

No, it should not make any noise. The installer is responsible to set up the pattern correctly.

 

[Some Random Guy]

The info I gathered from months of dealing with this, is it’s only the 4:88 Yukons that are doing this, even Yukon is aware of the problem. 4:56’s no problems, unfortunately it cost me an xtra 3 grand$$. I read a lot of threads afterwards saying only to put the Spicer gears in your Jeep. Live and learn I guess, good luck to you.

FWIW, I had Yukon blame their R&P on 5.13’s they set up themselves. 2 installs later, I was refunded everything for both rear installs/parts they did.
I went Dana, learned myself, and things went great. I found their setup to be garbage.

 

[azjl#3]

Resurrecting, on my 4th Rubicon, new 2023 JLR 2dr, 4.88 axle, definite loud whine letting off gas. Never heard a rear end whine like that except my sons ranger with 200,000 miles on it. I only have 50 miles on it, let it wear in some more?

 

[chevymitchell]

Resurrecting, on my 4th Rubicon, new 2023 JLR 2dr, 4.88 axle, definite loud whine letting off gas. Never heard a rear end whine like that except my sons ranger with 200,000 miles on it. I only have 50 miles on it, let it wear in some more?

Definitely not. Get it looked at first opportunity.

 

[Steph1]

Resurrecting, on my 4th Rubicon, new 2023 JLR 2dr, 4.88 axle, definite loud whine letting off gas. Never heard a rear end whine like that except my sons ranger with 200,000 miles on it. I only have 50 miles on it, let it wear in some more?

I’d start by making sure there’s sufficient oil in the axle. On my regear to 4.56, I had a whinning sound that disappeared in a few days.

 

[ScotM]

I had mine regeared to Revolution 4.56. No noise, looked great at 500 mile Break-in, no issues 1000 miles later. Break-in protocol must be followed, if those gears overheat anytime in the first 500, toast and noise. In my opinion, shop matters, break/in is critical

 

[azjl#3]

I’d start by making sure there’s sufficient oil in the axle. On my regear to 4.56, I had a whinning sound that disappeared in a few days.

Well day to. Put another 50 miles on it over mountains. Noise not noticeable, never drove a rubicon with only 40 miles on it.

 

[EtBiart]

I believe im having an issue with my newly installed 4:88 Revolution gears... went to a reputable shop. had a no noise before the re-gear. but afterwards I got an knock sound with letting on and off the gas and specifically when the AT downshifts in the middle of 4th gear along with a lurch forward... the reputable shop has aknowleded the noise but they've also tried to convince me that its a transmission issue. mind you my Jeep is a 2024 with just over 4K miles.

I don't know who to believe, but the sad part is, I told them I wanted to go with Spicer, but they convinced me to go with revolution, along with an extra discount. perhaps this is my fault for trusting them.

Mike from revolution doesn't think I have a gear issue. but he also stopped responding to me.

the dealer is blaming my AEV lift, and differentials for the issue and claiming I voided the warranty on that..

most people who hear the noise from my video says backlash

shop says backlash is perfect.

im planing on going to another shop to try an fix all this..

 

[ScotM]

Is it possible that your lift is greater than 3.5” and you need a longer drive shaft?

 

[EtBiart]

Is it possible that your lift is greater than 3.5” and you need a longer drive shaft?

2.5 AEV dual sport RT. standard springs. Not sure what it nets

 

[ScotM]

2.5 AEV dual sport RT. standard springs. Not sure what it nets

Just grasping at straws. It’s so hard to know. I think a second shop is a great idea

 

[EtBiart]

Just grasping at straws. It’s so hard to know. I think a second shop is a great idea

I appreciate all assumptions, guesses, advice etc…..,
I’ve been troubleshooting everything I can think of. It’s not that the noise bothers me, I just wanna make sure it’s not building up damage and lead to an issue when the transmission warranty goes, or the shops gear / lift warranty goes as well

 

[ScotM]

I appreciate all assumptions, guesses, advice etc…..,
I’ve been troubleshooting everything I can think of. It’s not that the noise bothers me, I just wanna make sure it’s not building up damage and lead to an issue when the transmission warranty goes, or the shops gear / lift warranty goes as well

I had a shop here in San Diego install revolution gears, and they been quiet. 4.56. After all the things in this forum, I feel like I got lucky. I hope you can resolve your issue

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