Originally posted by DelSolSIinMD
Motor mount was a good guess. Transmission mount might be another.
Something likes to vibrate at those specific fequencies... the hard part is figuring out what. If you have ramps or a lift, you might get underneath and have something very slowly raise the throttle for you to see if anything changes underneath.
I don't understand how mechanics can't duplicate things like this...!?
Ok, I jacked the front of the car up, and let it idle in 3rd gear. Then revved it up for the camera...
http://idisk.mac.com/OSX2000/Public/MOV01098.MPG
Now does that look a little too loose or is it just me? (That is a motor mount, half covered by the cruise box for those that don't recognize it)
Originally posted by Motohip
Cars are so scared to go to the doctor so they're on their best behavior when you have 'em checked out. 
Bahahaha, it's so true!