First question: When you started all of this, was your CEL on?

If you do have a CEL, then do yourself a favor and get the CEL code read. There are literally hundreds of codes. The odds of you finding the problem without the code are slim to none.

If you have a Walmart near you, check to see if they carry an OBD-I reader for your car. I saw one up at the Walmart where I live for around $25.

Also, from your other post you mention cleaning the throttle body (TB). Did you remove the TB gasket and clean the EGR passage behind it?

If your not sure, then check out http://community.webshots.com/scripts/editPhotos.fcgi?action=viewall&albumID=48338095 to see what I am talking about.

I also posted a how-to at http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=10673

96 Contour SE Duratec V6 24-valve 2.5L ATX 108,000 mi. Replaced: crankshaft w/ DMD, EGR valve (clogged), EVR, DPFE, PCV valve, evap emissions hose & tube (cracked), window regulator (broken), LH & RH PCV tubes, UIM gasket (leak), ignition coil