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2011-2014 Mustang GT Tech Forum

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Unread 02-14-2012   #1 (permalink)
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Default trans whine and traction control?

DOes anyone think that MAYBE there is a connection between the Traction control/sports mode on out GT's, and the whine in the transmission? There is alot of power changes etc
I asked a service tech and he said the whine is possibly coming from the syncro's in the tranny..
Just curious (counld not fine any answer in the SEARCH mode)
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Unread 02-14-2012   #2 (permalink)
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No, there is no correlation between transmission whine and the traction control system. I had my original transmission replaced for a very loud whine from bad bearings on the input shaft. The traction control is purely brakes and engine power mangement limiting wheelspin.
 
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Unread 02-14-2012   #3 (permalink)
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The whine is generated due to a lack of phosphate coating on the gears. Ford remedied this as of 7/25/11 and incorporated it into production.

There really is no power increase in sport vs regular mode...just steering wheel stiffness and parameter changes to the ESC system.
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Unread 02-14-2012   #4 (permalink)
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Originally Posted by MikeMcNasty View Post
The whine is generated due to a lack of phosphate coating on the gears. Ford remedied this as of 7/25/11 and incorporated it into production.
This is not correct for the real(non-subjective) transmission whine. Never mind having to be perfectly quiet to hear it, my trans whined so loudly it drowned out the radio and exhaust. It was because of bad bearings on the input shaft.
 
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Unread 02-14-2012   #5 (permalink)
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Correct Grimace, my whine is caused by the Input shaft, hence why I can hear it 1,2,3,4, and 6, but no whine in 5th. Mine is loud enough to be annoying, but not so loud that I fear of imminent failure. Grimace, any chance just the input shaft bearing can be replaced? Also, has anyone gone through the revision list to see if the Input shaft bearing itself has been upgraded/changed?
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Unread 02-14-2012   #6 (permalink)
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Originally Posted by adspru View Post
Correct Grimace, my whine is caused by the Input shaft, hence why I can hear it 1,2,3,4, and 6, but no whine in 5th. Mine is loud enough to be annoying, but not so loud that I fear of imminent failure. Grimace, any chance just the input shaft bearing can be replaced? Also, has anyone gone through the revision list to see if the Input shaft bearing itself has been upgraded/changed?
The dealer had hoped to replace just the bad bearing(s), but at the time back in December they were on Intergalactic Backorder. Mechanically speaking yes they are replaceable and other than some light scoring on the shaft itself there was no other internal damage or even signs of wear after about 12,000 or so miles on the car when it was torn apart.
 
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Unread 02-15-2012   #7 (permalink)
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Quote:
Originally Posted by MikeMcNasty View Post
The whine is generated due to a lack of phosphate coating on the gears. Ford remedied this as of 7/25/11 and incorporated it into production.

There really is no power increase in sport vs regular mode...just steering wheel stiffness and parameter changes to the ESC system.
Do you have a newer production model after 7/25/11 and can confirm there is an actual difference? My stang has a little over 28k on her and I started to notice this whine around 14k miles. I took it into the dealer and they said it was normal, however I know for a fact it was not doing this before purchase or else I would not have purchased the car.

Of course as we all know there has been no fix for this issue but my gear whine is pretty noticeable with the radio turned down and can be heard over the exhaust (stock exhaust) and with the windows rolled down. I cant agree that any gear whine is "normal" but is this type of volume similar to the ones that are "working properly" or is there a possibility the dealer is BSing me? I would take it to another one but since no one has really come out with a fix or even admitted there is an issue I am hesitant to waste my time.
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Unread 02-15-2012   #8 (permalink)
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Quote:
Originally Posted by MikeMcNasty View Post
The whine is generated due to a lack of phosphate coating on the gears. Ford remedied this as of 7/25/11 and incorporated it into production.

There really is no power increase in sport vs regular mode...just steering wheel stiffness and parameter changes to the ESC system.
That has nothing to do with the whine either I have a very first 2011 build and have zero problems with my car! I had my car may 2010


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Unread 02-17-2012   #9 (permalink)
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Great feedback, guys!:smilie

Quote:
Originally Posted by drifter1853 View Post
DOes anyone think that MAYBE there is a connection between the Traction control/sports mode on out GT's, and the whine in the transmission? There is alot of power changes etc
I asked a service tech and he said the whine is possibly coming from the syncro's in the tranny..
Quote:
Originally Posted by Authrom View Post
Do you have a newer production model after 7/25/11 and can confirm there is an actual difference? My stang has a little over 28k on her and I started to notice this whine around 14k miles. I took it into the dealer and they said it was normal, however I know for a fact it was not doing this before purchase or else I would not have purchased the car.
members, let me know if you'd like me to escalate this for you.

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Unread 02-17-2012   #10 (permalink)
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Quote:
Originally Posted by Grimace427 View Post
The dealer had hoped to replace just the bad bearing(s), but at the time back in December they were on Intergalactic Backorder. Mechanically speaking yes they are replaceable and other than some light scoring on the shaft itself there was no other internal damage or even signs of wear after about 12,000 or so miles on the car when it was torn apart.

This is good news. I wonder if the bearings have been upgraded in recent revisions?
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Unread 02-18-2012   #11 (permalink)
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Originally Posted by adspru View Post
This is good news. I wonder if the bearings have been upgraded in recent revisions?
Well it's impossible to say a revised bearing would become immune to failure, or even premature failure. I replace bad bearings all the time at work with Mercedes, but our cars are not known for bad bearings. None the less, failures still happen. I'd like to think a change in the fluid might help curtail a huge number of failures.
 
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Unread 02-18-2012   #12 (permalink)
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Quote:
Originally Posted by Grimace427 View Post
Well it's impossible to say a revised bearing would become immune to failure, or even premature failure. I replace bad bearings all the time at work with Mercedes, but our cars are not known for bad bearings. None the less, failures still happen. I'd like to think a change in the fluid might help curtail a huge number of failures.
i agree that the transmission whine is almost always caused by bearings! the closer to the front of the transmission the louder the whine. exception straight cut gears.

but i wonder how you think lighter / thinner transmission fluild solves / helps the issue?

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Unread 02-18-2012   #13 (permalink)
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Quote:
Originally Posted by Grimace427 View Post
Well it's impossible to say a revised bearing would become immune to failure, or even premature failure. I replace bad bearings all the time at work with Mercedes, but our cars are not known for bad bearings. None the less, failures still happen. I'd like to think a change in the fluid might help curtail a huge number of failures.

While I think the better fluids are a paramount, I'm not sure swapping fluids early would have stopped the whining.

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Originally Posted by Swoope View Post
i agree that the transmission whine is almost always caused by bearings! the closer to the front of the transmission the louder the whine. exception straight cut gears.

but i wonder how you think lighter / thinner transmission fluild solves / helps the issue?

beers
Doubt it will, my understanding is that the bearings are sealed....
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