Moose08

so we hooked most of the comp up and were getting a 112 Act or Iat code so going to clean the sensor and see what happens

Good old Bill

The readings are suspicious, 3&4 same readings and also 5&6 are same readings. Not really the best sign. Suggest doing it over. This time so we aren't misled. Cyl 1-4 pass side front to back, and 5-8 divers side front to back. Its unlikely to have two cylinders with the same readings, let alone on both sides. Unless this engine was overheated recently?

Moose08

thats what we got, the temp was pushing the higher then normal. replaced the MAP and ACT still nothing then found out the air idle control valve isnt working, and it starts to act up the worst at idle and high rpms when it kicks in but it get stuck. So getting new one tom, see what it does.

shifty_85

IAT will screw up your A/F ratios pretty good so the computer might be detecting something and giving each cyl less fuel making it lean and makeing the headers glow. the IAC not working will cause it to idle like crap. are the headers the right ones for the truck? were the cats pluged or is the exhuast pipe pinched anywere? sounds like its not exhaleing

Moose08

stock headers and we droped the entire exhaust system just headers and down pipes on atm.

Moose08

i feel so dumb.....it was the fuel pump the fuel pressure was fine when truck was cold so didnt think twice about the fuel pump, we finaly checked it after it warmed up and was way low....backing to leaving 50 foot burnouts again so all set