Ahh! 17 MPG is killing me!

[Eric Huppert]

Obviously check all the basics, i.e. tune-up, etc etc. When I purchased my
200 20V previous owner complained of poor fuel mileage. In this case the
vacuum line to the fuel pressure reg was defunct. That increased fuel
mileage substantially!

Morale of the story, check/replace all vacuum lines if you already haven't
done so.

Any codes? Age of oxygen sensor?

Eric