Magikal
1/2 ton status
7.4l vortec from 1997 c3500 in my k5. Standalone harness and pcm tune by team208motorsports years ago. Suddenly started running like crap. Barely feather it to keep running. Spit and sputter for a bit and then click, runs fine for undetermined amount of time. Hooked up scanner and noticed intake air temp was reading -40. Unhooked sensor. Same. Jumped plug at sensor and went to+150. Ok, sensor is shot. Ordered new acdelco sensor and installed. No change. Still reads -40. Wtf? Help please.....
