Wow. thanks for all the suggestions! I'll try to poke around, and see if I can hear what's making the noise, and if it's related to the a/c or fan. Thanks for the tip on the VW pump, too. My attention has been diverted by another project, 9 months in the making, which finished up earlier this week. ...

Hi, everybody: My first post. I've got a 1998 Volvo V70, with about 130,000 miles on it. Has anybody out there had a similar problem? After I shut the car off, it continues to make a clunky whirring sound for a few seconds, particularly after a drive longer than 20 minutes, and after being on the hi...