Well over this last week my car has developed a very loud wine if I go over 35 mph. It sounds like it's coming from the tranny tunnel, but has anyone else experienced this? I checked things in the cabin of the car like the speedometer cable, but haven't found anything. Hoping this isn't my tranny

Seth

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Annabelle: 1970 Dodge Dart Hardtop
1991 Nissan 240sx (sileighty) Lots of mods
1974 Dodge Dart *Wrecked*

Check fluid levels in transmission, and rear end for starters.

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67' Dart GT Convertible; the old Chrysler Corp.
82' LeBaron Convertible; the new Chrysler Corp
07' 300 C AWD; Now by Fiat, the old new Chrysler LLC

I checked the tranny when it started to happen and it was barely reading on the dipstick, so I filled that back up. I haven't checked rear end fluid yet though.

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Annabelle: 1970 Dodge Dart Hardtop
1991 Nissan 240sx (sileighty) Lots of mods
1974 Dodge Dart *Wrecked*

As wjajr said start at the beginning. The most likely problem is the cheapest and easiest to fix. Start from there. Check the driveline bolts. Speedometor cable is not it. Also do you feel anything in the front end or steering in conjunction with the whine?

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'73 Scamp (the girlfriend): 225ci super/6 2BBL conversion (Almost done!)
'90 Subaru, wagon (the wife): H4-cyl 2.2L

1977 Mercedes-Benz 300D, 5cyl diesel(For sale!)

Does the volume or pitch change as you accelerate or decelerate?

If you shift into neutral at speed, does the whine go away?