[kthelen]

I know it's far from ideal (to say the least), but until I'm willing to sideline it to get a mail-order tune, it is what it is. And it DID run fine for months prior, so I'm not sure that the incorrect flash is entirely to blame.

Strangely enough, as I was re-checking things a bit ago, I decided to try running it with the MAF sensor disconnected. Strangely enough, that seemed to have dramatically decreased the problem. What's stranger yet is that the motor actually idles fine without it (contrary to what I'm used to seeing on older GM products).

After a bit of testing, I'm beginning to suspect that my original MAF sensor may indeed have been faulty, and that my junkyard "ran when pulled" replacement wasn't good either. Never had a problem taking that yard's word in the past, but I suspect exchanging the questionable MAF sensor will shed more light on the situation.