1997 Chrysler lhs. Had engine light on for a bit. Been driving normal, but now has been surging, bucking, not idling right....almost sounds like its running on 5 cylinders. Has a bad miss even while giving it gas....Thoughts anybody? Been told it is the egr valve. Will a bad one do all of these symptoms? Any help would be great....

 

"Had engine light on for a bit" first thought get the code for the light