[s-cars] Whooshing sound under at high RPM

[batchelder]

Hello,
Yesterday my 92 UrS4 began "Bucking" at high RPM's under heavy
acceleration.
 Today I'm not able to reproduce the cutout problem; perhaps it is
related to engine temp.

Now I'm hearing a loud "Whooshing" sound from the driver's side of the
car when I accelerate hard.  It does not happened in 1st gear, no matter
how hard I accelerate, but it is very consistent in 3rd gear once the
engine gets above 3800 RPM's.  If I accelerate slowly in 2nd, the
"Whoosh" noise does NOT occur.

By "Whoosh" I mean it sounds like compressed air.

Any thoughts?

Thank you,

Jed
1992 Urs4