The techinfo article shows how to test the coils.
That'* a good start, but ac (or pulsating dc) impedances can be complex and not always show problems with a dc resistance check. Nor will any breakdown caused by high voltage. Swapping them out with known good ones is the best way. Know anyone that you can swap them around with?
A few years back, there was a link posted where you could check for any updates to the programming of your PCM. Mine showed one for a change in the injector pulses to smooth out a rough idle problem. That'* a possible cause for yours. Mines does it a little in park, but smooths out in drive.
Black 2000 SSEi, Silverstar Headlights, Angel Eyes fogs, 3rd brake light overlay, hi-flo cat, drilled 180 degree thermostat, Intense FWI, PCM, shift kit, and 3.4 Pulley. Solid front mount.