Hello. My GTP has around 160k miles on it. I have owned it since 2006. I have a triple whammy going on. The check engine light came on about 2 weeks ago. I am getting a P1404 code. I tried resetting the codes but it immediately came back. A few days ago, the car has started surging while driving. I notice it mostly at speed on the highway and under light acceleration. I don't seem to notice anything under hard acceleration. Last week I also got a recall notice (15757) for a potential under hood fire.
Could the EGR code be related to the surging or do I have another issue going on with the transmission? I did a trans service around 100k.
Btw, I pulled the EGR out last night and the pintle seemed to move freely. I put the EGR back in and disconnected the battery. I cleared the code as well. About 15 minutes into my drive this AM the code came back. The car was surging still at speed and under light acceleration.
Any thoughts?
