[mythirdeye]

First, a bit of background... Step father (decent mechanic, but not an expert) scanned for codes on the car a few weeks ago (he just does stuff like that). It showed EGR, O2, CPS, and maybe coolant temp(not sure on my memory here). He pulled off the EGR valve, it wasn't moving freely so he cleaned it with some carburetor. We weren't going to worry about the CPS or the coolant temp. The O2 was going to be saved for a later date.

A couple of days later the car wouldn't start. I checked the forum here, found people talking about the CPS... found an awesome guy on youtube that showed me a test for it. The test showed it was the problem. I replaced it, and the car runs.

BUT... and this is why I'm here... there's now a hiccup in the engine. At idle the engine will almost drop into a stall, and at speed you can notice a brief hitch before picking back up.

ideas?