Drivetrain Let's plate guess that noise.

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
34,596
10,767
224
Massachusetts
Tried to get a sound clip, but no luck. But anyway let's play a game. I've had this noise for s few weeks and can't ID it.

Here's the facts.

  1. Sounds like a high pitched noise. Similar to what a centrifugal blower at idle sounds like, but quieter
  2. Does not increase speed with rpm or vehicle speed -remains constant
  3. Not present when idling or inching the car back and forth a few feet
  4. Only starts at approx 3-4 mph and higher
  5. Stops when I slow down and reach 3-4 mph
  6. Volumn is constant. Speed above 10-15mph drowns it out
  7. Comin from trans tunnel area in any zone from bellhousing to mid driveshaft. Unable to pinpoint
  8. Seems to disappear when it's hot out > 85 degrees
  9. Not related to clutch position or gear.

Ok, give me some ideas. I haven't had a chance to put the rear axle up on jackstands and put the car in 2nd and let it idle in gear yet.
 
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DSB88GT

Active Member
Nov 6, 2016
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Sounds similar to my squeaky speedo cable. Volume is inversely proportional with outside temp!
 

jrichker

StangNet's favorite TOOL
SN Certified Technician
Mar 10, 2000
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lowendmac.com
Wind noise - I chased such a noise for quite some time before I figures out that it was wind blowing around the trim or something like that.
 

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
34,596
10,767
224
Massachusetts
Not at that low speed. Same sound if I back out of the driveway. It literally starts at maybe 1-2mph
 

John Dirks Jr

there is enough sticking out to grab on to
Jun 28, 2013
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Maryland
Unhook speedometer cable at trans and test drive. See if that makes the noise stop
 

Mustang5L5

i'm familiar with penetration
Mod Dude
Feb 18, 2001
34,596
10,767
224
Massachusetts
It's already an AL piece.

Entire drivetrain is coming out this fall anyway. Spray lube will do fine for the 100 or so miles I'll drive until then. I'll grease it when I put it back