OK, I got the OBD codes using the paper clip jumper. They are in order:
522
522
176
177
542
176
177
542
Any hints here? I don't see much to help based on my 3 digit code guide. O2 sensors have only about 40K on them. Note that my stumbling problems started about two days after I corrected a serious misfire on #2 plug that had been going on for about 2 weeks. I changed out #1 and #2 plugs in finding the misfire. Ran great, then stumbling and poor idling started 2 days later; then I changed out the rest of the plugs with no real difference in the stumbling.
I also yesterday tried gapping the plugs down to .044. No difference in performance.
I'm going to pick up new Motorcraft wires tomorrow. Thinking also about picking up a CTS, IAC, and a TPS, and tearing down the throttle body myself, but I really can't afford all that.
Could I have a vacuum leak?
Thanks for the experienced help.
Chris
