I have a 2001 Civic EX. I'm about to take it in to the dealer for a
look at something while it's still under warranty-- but they've tried
to fix it once before to no avail, so I thought I'd see if anyone here
had any ideas.

Last year, towards the end of the summer, we would hear an occasional
"whistling" sound while the air conditioner was running. The sound
was very intermittant-- kind of a high-pitched "whooooop," just a
second long, once every 3-5 minutes.

So we took it in to the dealer and they replaced the blower.
Unfortunately it was the end of the summer so we didn't use the AC
much after that, so we couldn't really test it. Never did hear it
while using the heater during the winter. Now that summer is back,
we're using the AC and hearing this weird sound again.

The AC performance doesn't appear to be affected in any way. Would
appreciate any thoughts anyone might have about what could be causing
this. Thanks!

starunner92@yahoo.com