I have an 05, did the same thing. I was going to replace the ICP and unplugged it, looked into the connector, blew in it, plugged it back in. The motor smoothed right up! I do not know if I had a connector problem, if unplugging it while it was running (well sort of running) reset something or what. That was about 10k miles ago. It has been running great ever sense.

My ICP is in the passenger valve cover. Very easy to get at.