http://www.contour.org/cgi-ubb/ultimatebb.cgi?ubb=get_topic&f=3&t=003724 This has a post describing how to clean the upper intake, EGR ports, and TB. You could probably get away with just pulling the TB off the upper intake - you'll need a new gasket for this though. The real problem is right behind where the TB bolts onto the upper intake - there are three ports for the EGR that I will bet are completely plugged up with carbon. They were on my car, and I cleaned them out at about the same mileage your car has. I used to have pics of the clogged ports on that post, but my web server got screwed up. I still have the pics if you want to see them - just e-mail me at sting45470@yahoo.com and I'll send them to you. Poor design of the EGR ports on Ford's part, IMO. Otherwise a great engine though. 
'96 Contour SE, black / opal grey, MTX, every option, KKM intake, resonator removed, Flowmaster Series 40 DeltaFlow, GoodYear Eagle HP's, 115k miles, new paint 7/01. Driven cross-country 4 times.
'70 Corvette Stingray Coupe, Cortez Silver, 454 bored to 462, Muncie M21, too many mods to list, lots of fun. 335 rwhp / 365 rwtq
'02 Corvette Z06, Electron Blue / Black, every option. Stock for now...
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