My transmission is whining

[BBB]

I'm noticing my 6 speed whining through first 4 gears when it's really hot. Anyone else?

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[Steve68]

Is it a whine or a whirl? I drove a brand new one that did that.

 

[BBB]

I guess it's a bit of both?!?. I can also feel the heat from the transmission along the center console where the e brake is

 

[Varekai]

Sounds like you need to get it some cheese to go with that wine! :headbonk:

 

[FordService]

I'm noticing my 6 speed whining through first 4 gears when it's really hot. Anyone else?

Time to get you into your Ford Dealer and get this checked out, BBB. Please make an appointment with them as soon as possible. Then, please PM me with your VIN, dealer, mileage, full name, and best daytime number. I’ll get the customer service manager for your area involved if needed.

Deysha

 

[AMP-D]

Fluid is thinning out with the heat and not filing in the voids in the face of the tooth causing it to whine. Do a search on my profile and you will see what is the origin of the whine. Putting different fluid in it just patches the problem. Ideally, the MT82 should use a light weight fluid like the Tremec models do but with the poor tooth profiles, will howl like a Banshee......

 

[Grimace427]

Fluid is thinning out with the heat and not filing in the voids in the face of the tooth causing it to whine. Do a search on my profile and you will see what is the origin of the whine. Putting different fluid in it just patches the problem. Ideally, the MT82 should use a light weight fluid like the Tremec models do but with the poor tooth profiles, will howl like a Banshee......

I disagree with you here. My first MT-82 whined like a banshee, but it was not a design flaw but rather a bearing failure. My current MT-82 has over 25,000 miles on it with plenty of racing and it is completely silent. Same goes for tens of thousands of other MT-82's on the road today.

You make it sound like because of the gear design it is inevitible for all MT-82's to whine.

 

[AMP-D]

I disagree with you here. My first MT-82 whined like a banshee, but it was not a design flaw but rather a bearing failure. My current MT-82 has over 25,000 miles on it with plenty of racing and it is completely silent. Same goes for tens of thousands of other MT-82's on the road today.

You make it sound like because of the gear design it is inevitible for all MT-82's to whine.

I've said this before, bearings do not whine. They growl exactly like a wheel bearing when the hardness of the surface galls and becomes rough. Its possible to create a whine from a bad bearing if it allows the gears to run out of alignment. More MT82s whine than don't. Its just covered up by after market cat back exhaust systems.

The more torque the unit sees, the faster the whine will develop and the louder it will get. Thicker fluid will take up the void on the low spots of a bad tooth surface but as it heats up, it thins out and is less effective to cover up the noise.

 

[CJ4life]

I'm noticing my 6 speed whining through first 4 gears when it's really hot. Anyone else?

Sounds like the MT-82 strikes again!

 

[Grimace427]

I've said this before, bearings do not whine. They growl exactly like a wheel bearing when the hardness of the surface galls and becomes rough. Its possible to create a whine from a bad bearing if it allows the gears to run out of alignment. More MT82s whine than don't. Its just covered up by after market cat back exhaust systems.

The more torque the unit sees, the faster the whine will develop and the louder it will get. Thicker fluid will take up the void on the low spots of a bad tooth surface but as it heats up, it thins out and is less effective to cover up the noise.

I'm giving you real world experience. Whining bearings are a known failure of the early MT-82s. Once the bearing issue was resolved the majority of noise complaints ceased.

August of 2012 Ford changed the gears to a phosphate coating, however the number of noise complaints did not change until owner's failed bearings were replaced.


Most links are blocked here at my work, here's a few examples:
http://www.moddedmustangs.com/forums/2011-2014/302827-mt-82-victims.html
http://forums.corral.net/forums/s-1...0-did-some-research-getrag-transmissions.html
http://themustangsource.com/forums/...roken-worn-out-your-10-mustang-529025/index7/

 

[EXP Jawa]

however the number of noise complaints did not change until owner's failed bearings were replaced.

I don't see how that is counter to what AMP-D has stated. The bearings might have been the root cause of the issue, but not the source of the actual whine noise. Like he said, bad bearings will lead to poor mesh of the gearing. The gearing makes the noise because the bearing allows it to. In our products, the gearing can move around a little bit and the actual mesh pattern can sometimes change, but because differential gearing turns so slow (just a few RPM), it isn't sensitive to this sort of noise. We can get away way with tooth profiles that would scare a transmission guy, which makes the hobbing faster. But transmission gearing spin at much higher speeds and are very sensitive to tooth profile and mesh condition, just like a rear axle ring & pinion is very sensitive to the same things. If it is set up wrong - or moves under load due to bearing issues - it will whine. But the bearing itself isn't generating the noise.

 

[Grimace427]

I don't see how that is counter to what AMP-D has stated. The bearings might have been the root cause of the issue, but not the source of the actual whine noise. Like he said, bad bearings will lead to poor mesh of the gearing. The gearing makes the noise because the bearing allows it to. In our products, the gearing can move around a little bit and the actual mesh pattern can sometimes change, but because differential gearing turns so slow (just a few RPM), it isn't sensitive to this sort of noise. We can get away way with tooth profiles that would scare a transmission guy, which makes the hobbing faster. But transmission gearing spin at much higher speeds and are very sensitive to tooth profile and mesh condition, just like a rear axle ring & pinion is very sensitive to the same things. If it is set up wrong - or moves under load due to bearing issues - it will whine. But the bearing itself isn't generating the noise.

You may be right, but I'm stating that gear design isn't the cause of whining transmissions like AMP-D is stating. He is making it sound like whine is inevitable in the MT-82 because of poor gear design, which I have provided evidence that that is not true. Whining has been proven to be caused by failed bearings, not gears. Whether the bearing is making the noise or not is somewhat irrelevant, as the whine does not occur until the bearing has failed(in reference to severe whine).

Some people complain about a whine that is so faint it can only be heard with the windows up and radio off. I tell those people to not worry about that. I'm only referring to whine that is so loud it drowns out everything else.

 

[EXP Jawa]

Well, its relevant to what he was stating, strictly speaking. And he's right - poor tooth profile will cause noise (just like in an axle), and these transmissions seem to have relatively poor quality gears. There may be bearing-derived whine issues known to exist with this gearbox, however, do not discount the gearing itself as a contributor to the overall noise. If not today, then later on when the mileage is accumulating.

 

[Grimace427]

This all didn't start with the 2015 Mustang, this began back in 2010 and there are people with 100,000+ miles on their MT-82s. Zero whine until bearing failure.

 

[Tommy V]

Both are correct the gears cause the whining but its because the bearing fails and changes the tolerance,s between the gears.Im sure without the bering failure the gears would live a long live as long as it was not abused.A little whining has been normal for these for years.Different fluids help because they take some of tolerance out between the gears in which it usually quiets it up a little or sometimes takes it away completley.

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