Joined: Sep 2011
2003 GT High Idle after intake install
Hi all , I installed a Dorman intake manifold because my original one started leaking. any way i installed the new one and everything fine no leaks but now my idle around 2100 rmp and i cant figure it out. I got code P0113 - Open circuit in harness , Circuit High Input : Self-Test maximum. : circuit and PCM. which say i have a possible short short in the electrical wire harness. and that its putting out more voltage than maximum allowed which is 4.6v. so I checked it and its putting out 12v. Can a short cause it to shoot the wrong voltage? Anyway I went and bought a new Iac valve hoping that was the problem but it wasn't. Any suggestions?
red 2003 mustang gt with 4.6 motor