So i am having a little bit of a problem with the Prix. I have a 97 GTP... Pretty much stock. I am having a "stumbling" problem at low speeds. Almost like a mis-fire but am not getting an SES code for misfire. So last weekend I changed the plugs to the XP 606's. And I used Seafoam. (Seafoamed first) Hoping that would fix the problem. But no. My question is could my problem be caused by an EGR going bad? I am getting an EGR SES code from time to time. Something about a "PINTELL POSITION" or something. I also noticed while doing the seafoam that the EGR gasket is pretty much gone. Lots of smoke from around the EGR. My next attempt was going to be plug wires, but if it could be an egr I will just do an EGR delete.