95' Mazda 929 runs like a brand new car as long as it on the highway or not in much traffic. However, in traffic shorttravel distance of a few feetand then stop car starts running bad - rough iddle, engine light comes on, rpms almost drop out then comes back to about 700, but still sounds rough, engine light on. Harder the stop the worse it is. Take it very easy and not apply to much brake and car does better. Any help would be much appreciated. Roy