1987 dodge ram 50 2.0 egr

I have a 1987 Dodge ram 50. It has a 2.0 motor. The little red light on the dash says "check EGR. I changed the EGR valve..I continue to have a lower end miss. There is a vaccume line that runs from the bottom of the EGR valve to the computer on the driver's side of the fender well. Could the problem be the computer?