Sorry for my earlier post of frg valve code. Simply hit the wrong key. Does anyone know if this is an easy fix? My '02 runs good when its cold, but once it warms up it idles rough, hesitates, and when running it shakes horribly. Any help will be appreciated.

 

Take the EGR valve off and clean the carbon out with carb cleaner. Buy a EGR gasket at the parts store before the cleaning. The old one might not be usable.