Mitchell93
Newbie
I do own a scanner (modis edge) and can monitor reading from all the pcm imputs, my cousin is dropping off his 91 suburban for me to compare the data inputs from a known good running tbi to this one, I hope if I can find a big difference it might help lead me down a path to looking for say high resistance circuits. Ive already fixed 2 broken wires, one for the transmission input speed sensor, and another one that was behind the distributor, had all the insulation skinned off for about an inch, not sure what it was for, as there are about 30 wires in that bundle. Figured it may be bumping the intake at times. With the scanner im getting what seems to be normal readings but I'm just not 100% sure what the normal readings should be with some of these. Like the (knock) pid, just stays at like 8 if I remember, idk what that's telling me if that's supposed to be some sort of misfire counter or something... I'm hoping I'll find out a better path tomorrow, if not, I'll definitely check each one from your list. I'll be leaving for work again tomorrow night so I won't be with the truck again til Friday.