Welcome onboard.

Don't think I can help with ideas on core problem, but here's a little info.

Common acronyms from FAQ section:

http://www.contour.org/FAQ/FAQ.cgi?s=terms

For some reason the most common, CEL (check engine light), isn't listed.

Reset PCM by pulling fuses f9 & f11 in engine compartment fuse box for a few minutes, easier than disconnecting battery.

98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both