I have a V70 T5 and occasionally experience a loud resonance at idle. I bought the car last summer and experienced it then but it went away over the winter. It's back now and I am starting to think it may be associated w/AC usage, but it's intermittent enough that I'm not sure. Has anyone else experienced this? How 'bout a fix? I know it won't reproduce any time I'm within 10 miles of my dealer.<P>