Hi,
I have the same problem with my Contour 1995, 2.0 L Zetec, 48,000 miles. I recently bought it used and the idle was rough when I got it.
Today I replaced the IAC valve. No change, still vibrates in gear while stopped.
I have removed and inspected the upper left and upper right mounts. They appear to be in good condition.
I've read most of the threads I could find on this, and no one has a solution that consistently works.
Anyway, I'm thinking about replacing the lower front mount. I was wondering if this replacement worked for anyone else.
Thanks.
Rob Brown