While your checking each plug, take a pair of needle nose pliers and crimp the low tension leads on the coils they get loose and cause gremlin misfires.
The lubricat the stepper motor. You can pull the boot down easily on it. Use wd40, or some type of crc spry lubricant.
Clean and lubricate all the spring and linkages in front and between the throttle bodies with same spray. Once you get her back together and get a cable we'll link up run a couple quick test . The we will do a ISCV CHECK/RESET, clear the ecu's adaptive parameters and see what you have. While you're waiting on the cable clean the battery leads especially down by the starter.
NOTE I did not say check the leads !!!!!
Have a great day!!!