Hey GPF,
I'm having an issue my fresh build on my GTP. I was driving down the road today at 55mph and all the sudden I lose power steering and the car dies (my aeroforce gauges show nothing abnormal or wrong). I pull over to the side of the road, and somehow limp it home. It's having a normal idle but surges. After I let it sit idle for a good bit (around 5-10mins) the RPMS will go from 762 to 800 to 1200 to 600 to 700 and the car sounds rough and will stall and die out.
My thing is it might be fuel related, MAF, or crank pos sesnsor. I'm not exactly sure I just installed everything on this car so I'm not sure what could be casuing it.
Any help is greatly appreciated. I already have a fresh tune on the PCM for the specific mods listed below.
2004 Pontiac Grand Prix GTPZZP NIC CAM COMP CAMS CUSTOM GRINDZZP DOWNPIPE CATLESSCOMP CAMS 136# VALVE SPRINGSCOMP CAMS RETAINERSZZP VALVE COVER BREATHERZZP POLISHED VALVE COVERSDOUBLE ROLLER TIMING SETZZP 3800 3.2 MODULAR PULLEYK&N “COLD” AIR INTAKEZZP SHORTER DOG BONESZZP 1.0 PCM TUNENGK COLDER PLUGSLS7 LIFTERSZZP CUSTOM 7” 5/16 CUSTOM PUSHRODSZZP 653 6 RIB BELTREBUILT 4T65E-HD @70K MILESDYNOMAX CATBACK EXHAUST 2.5”current odometer reading85,212 @4:27:2020
