well, I've been dealing with this idle surging issue as of late, although I replaced the EGR valve, O2 sensor, fuel pressure reg, cleaned the MAF. Has been running good for 3 days so far.

no specific code, the little black box indicates a 4 and 5 code, CEL is on. I'm rebuilding the code reader tonite to see if I can get anything more specific.

Really, I was just curious what that particular scenario meant, the one I stated in the original post.