I noticed both the gearbox noise, and the whine from the rear end upon deceleration.

None of my other manual Mustangs did this.

Has anyone found out whether there is more information on this issue?

Is there a Technical Service Bulletin for it? If not, I would think that there will be one issued later on.

 

Mine does the same thing. Diff whines on decel, and the 5-speed chatters on accel, especially in second. Haven't heard of anything yet from Ford.

 

Mine doesn't make any such noises. It does have what I believe to be an exhaust manifold leak though.

 

I just talked with the service manager from the Ford dealership I bought my 05 from. (my new best friend) :worship:

He looked through TSB's and found only one that pertained to the two noises mentioned.

The one TSB is for noises from the rear-end when making tight turns. The fix is an updated clutch pack in the posi-unit.

Nothing for whine on decel, or chatter on accel... yet !!

 

Mine makes a gearbox noise also when you let off the gas. It sound just lile you described kind of a whining noise. It does not seem to hurt anything though.

 

I feel there is going to be a synchro-related TSB. The other day I took off, cool day (it was probably in the low 40's, maybe lower), and drove it hard after less than a minute of warm-up. Loud synchro rattling noise after a hard engine-braking was very noticeable, like one of the synchro's was sticking or rattling. Went away after I shifted down and up through the gears, and didn't come back. This wasn't a gear crunch/grind, it was even in neutral, like a synchro was rattling off axis or something.

I'm just going to wait until it gets worse, so they can find it easier. No biggy right now, synchros are doing their job, and the noise is intermittant (happened once)

 

I posted about this earlier in the following link, but haven't received any responses yet.
http://forums.bradbarnett.net/index.php?showtopic=10887

I also found this info about gear noise on the following link.
http://www.dippy.org/svcman/sm03.html
It describes what I heard when I test drove the 05 auto. I've owned 3 other Mustangs and none made and noise during the "float or coast" situation mentioned below.

"Abnormal gear noise can be recognized easily because it produces a cycling tone and will be very pronounced through the speed range in which is occurs. Gear noise may be developed under one or more of the following conditions, “drive�, “road load�, “float� or “coast�. Gear noise usually tends to peak in a narrow speed range or ranges. Gear noise is more prominent between 30 to 40 mph (48 to 64 km/h) and 50 to 60 mph (80 to 96 km/h). Abnormal gear noise is quite rare and if present it usually originates from scoring of the ring and drive pinion gear as a result of insufficient or improper lubrication of the axle assembly. If the gear noise is on coast at all speeds, check for a loose pinion nut and readjust per this manual if necessary.

When objectionable axle noise is heard, note the driving condition and speed range. Remove the housing cover. Perform a tooth contact pattern check to determine if the best possible pattern has been obtained. If pattern is found to be unacceptable, reshim and adjust to obtain the best possible tooth pattern. If after readjustment noise still persists, replace with new gear set."

 

Once the ring and pinion have been seated together... which is almost immediately, adjusting might help, but probably not. The problem is likely going to remain which leaves replacement of ring and pinion the only fix. I agree though, the problem is caused by incorrect gear set-up.

 

I am not experience any noise on my car "knock on wood". The noise you guys are talking about sounds very familiar when I changed the gears on my 90 LX 5.0l. The guy that put the new gears in didn't set-up the gears properly and I had the whine as soon as I decelerated. After 1 week it was sooooo loud I went to another shop and had new gears installed.

 

I am getting a noise and also a feel in the clutch pedal as if there is something misaligned, maybe loose, with the throw out bearing. Is this a mechanical or hydraulic release?

 

You guys just need to ditch the quiet exhaust and get a loude one .... Gear whine goes away immediately ....

Sorry ...

 

Yes, but hearing also goes with it.

 

These new cars have lower axle ratios than the previous cars so they will sound a little different not necessarily should they be whining but you will hear the engine wind up quicker.

 

Yes, that's true for the 5-speed manuals, but the ratio for the auto is the same as the SN95s. I wish it had the 3.55's.

 

like the exhaust idea....had my 4.10's put it and got some whine....so i jusy installed the bassani stuff and it went away immediately....hahaahha...amazing!

 

Sounds like a real smart idea...not!

 

Does the automatic transmission seem to do the same? Does anyone know?




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My 5 spd isnt making those noises... thank the gods...