I'm not sure if the above will work, since a constant CEL is thrown only if the car has a problem with two out of three "drive cycles". Since a "drive cycle" is defined as driving your car, I don't know if idling will throw the CEL.
Anyway, another idea is to unhook the green vacuum hose from the EGR (exhaust gas recirculation) valve. I believe that this should throw a P0401 (insuffient EGR flow) after you have driven it around a few times and should not alter driveability that much.
Once you get the code, you can reattach the vacuum hose to put your car back the way it was.
1996 Contour SE Sedan 4D (Royal Blue)
Duratec V6 2.5L 24-valve DOHC
Automatic
75,000 miles
No Mods (unless you call the DMD a mod)
Replaced EGR valve (gunked up), EVR (EGR VR), PCV valve, and evaporative emissions hose (cracked).
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