99 GTP
I had some misfire issues because I failed to properly secure spark plug wires after I changed them out and they rested on some hot points on the motor, causing them to arc. I've secured them out of the way, and I don't have any misfires. Now the vehicle runs for a couple of seconds and then dies. The only code showing is the P0453. If I rev the engine up it will usually keep running but as soon as I let off it will die. It starts normally every time, but then just dies. The fuel pump assembly was completely replaced about a month ago. I've tried using a voltmeter on the FTP sensor, I get 4.8ish at the 5v reference wire when I connect to it and the ground wire. The signal wire shows 0 when I jump it and the ground, or shows 4.8 when I jump it and the 5v reference wire. I'm led to believe that the FTP sensor is bad, but everywhere I read says that this sensor has no effect on whether the engine runs or not. So even if it's bad, it seems the car should still run. It almost seems like the car is choking out and dying, if it were a small engine or a carburetor that's what I would say based on the way it dies. Anyone have any suggestions before I go drop 40 bucks on a FTP sensor?
