Thank you to all on the forum for suggestions. Just cleaned the EGR tube and MAP sensor after getting a P24AE code. I thought the soot on the tube would be bad after 74K but not as bad as I have seen in some images. The sensor, however, was caked and completely encrusted. So for the price of a can of cleaner, I'm back in business and noticing the idle is lower and some pep back on acceleration. Dealers in the Trenton area had no openings for 3 weeks, and that would only be for diagnosis with repair to be scheduled afterwards. Unbelievable.