2002 Ford Escort rough idle in gear under load

I bought an 02 Escort last September. It was extremely clean and had 105,000 miles. The only problem I had was exactly what you described. I took it back to the dealer and at his expense, he replaced the motor mounts. It helped alot, but it did not completely illiminate the vibration. I discovered that this problem was the result of a manufacturing issue with 02 Escorts and Tracers. There is a pdf document that you can read and/or give to your mechanic.

I hope this helps.

Mjktig2