Some of the parts places, like Autozone, will pull the OBDII code for free. As long as it seems to be running OK, I would do that first and post the results here. I'm sure someone would be able to help.
'98 Contour LX-White
2.5L ATX
94,000 miles
KKM Tru-Rev / FMS Wires
19mm BAT rear swaybar