6r80 strange whine

[danny0441]

im having an issue lately my car is a 2015 mustang gt with the 6r80 transmission, and 3.55 rear end option. ive noticed for quite some time that im getting a very faint hum/whine sound. at first i noticed it only on the hwy between 50-65 mph, it was only audible when accelerating but after some digging ive been able to pinpoint more on the issue. ive realized that i only get this hum/whine when the transmission is in 6th gear, i also only get the noise once the trans is warmed up. for example when the trans is at 150-170 degrees noise is not there when its in the warmer temps like 180-200 degrees is when the noise is audible, the noise is also only present when traveling in 6th gear at any speed between 40-65 mph. i accelerate to 70 mph its gone if i let off the gas the noise is still present but less audible. once i accelerate again as long as im in 6th gear it makes the noise untill the rpms climb past 1500-1700 rpm. im a little confused if i should be concerned. car is driving fine and before i hand it off to the dealer id like to get some opinions.

thank you

Sponsored

 

[danny0441]

bump hoping for some insight

 

[M249b]

Did anyone find a reason for this? I have the exact it same thing occurring.

 

[Cory S]

100% sure it’s the transmission? The rear ends in these cars aren’t exactly whisper quiet, and when the fluids warm up in the tranny/rear end to full operating temperatures, there’s going to be some audible drivetrain whine. Even more if you have ANY drivetrain/suspension upgrades….

Sponsored