I have replaced air filter.
engine idle very rough stops running at times, check engine light comes and goes on 1991 Lincoln Town Car
scan codes and post so we can adv
I had this same problem and had codes run on the car. Codes said I had bad EGR. Had this fixed. Had PCV valve replaced. Problem did not go away. Ran codes again and EGR code gone, but said misfire in cylinder #4. Was advised to replace spark plugs and wires. If this does not work then replace coil. Have not gotten that far yet. I think my car likes to play tricks on me. :-)