I don't see how a missing/broken IMRC cabel would cause jerking at low RPM's. If there's no CEL on then it's not going to be the IMRC.
These engines don't seem to like running anything but Motocraft or Autolite sparkplugs. I had some BOSCH one's in my 'tour and they caused the jerking during acceleration up untill about 3200RPM.
I suggust switching to the motocraft plugs and checking your plug wires.
My Cars
1999 Silver Frost SVT - 80,000km #2603/2760 Aug. 10, 1999.
1996 Mercury Mystique LS V6 MTX - retired @ 323,151km.
1995 Ford Contour V6 MTX-sold @ 214,000km
