Stopped at NAPA on the way home and picked up a set of plugs, plug wires and a fuel filter. Installed plugs and wires and what I found was the #6 plug wire metal connector (not the heat shield) was not snapped on to the end of the plug. Checked coil packs and all were 5.91 ohms on the secondary side (post to post).
Took it for a test drive and the TCC is working fine as described in the posts above. No more shudder.
Got home and started checking the plug wires. First three all had good numbers. Fourth wire.....ZERO resistance (plug wire #4), fifth wire good, sixth wire was zero to 8.3 to 12.67 to zero (#6). Two bad wires. Guess they were just good enough to let the car run but once they got a load on them they started to misfire.
See pictures of wires below. On the coil end you can see the gray outer jacket and the white inner jacket, on the plug ends gray outer jacket, charcoal inner jacket. Burnt.
Second picture is of a good wire and you can see both ends are white on the inner jacket.
Oh...those spark plugs I figure are about 6 years old or older. I've driven the car for about a year and it sat for 5 in my driveway with occasional starts.
Not sure pics are on here.......might need some help posting them.