Why does my car jerk at times at 40 and 60 miles hr on 1995 Toyota Tercel

I have a 4 cylinder automatic that will jerk hard at times when accelerating at 40 and 60 -65 miles hr I have replaced all belts and sensors within 2 years could this be transmission or another issue ?

by in Louisville, KY on December 03, 2012
2 answers
ANSWER by on December 04, 2012
My guess= engine misfire. How long since last tune up spark plugs ect.? Possible coil or plug boot breaking down, there are four. One each per cylinder.
ANSWER by on December 04, 2012
do you have a ck eng light on?