Originally Posted by
zaut
Mark, I definately moved the wrong direction.
Six shooter, the memcal was from RWD 3.1. I do have the jumper correct now. I just cant use the knock circuit. I ordered a 16151348 or AUJP from Autozone yesterday. They sell remanufactured ones. Hopefully it is correct.
34Blazer, I think I am following in you exact footsteps. I checked, double checked, triple etc the wiring. I have the tan 472 circuit connected to F16. I did a shorts test to every other circuit in the ECM and found no other circuits connected to that wire. There was a slight difference in my wiring to the diagrams for the 730 in the ground circuits (452 and 470). The 452 circuit for the old wiring included the ground for the MAT, CTS and TPS. There was no 470 circuit. In the 730 wiring, the 452 circuit only connects to the CTS and TPS. The 470 circuit connects to the MAT and MAP sensors. At first, only connected the new 470 to the MAP because pin B5 (452) and B6 (470) are connected together internal to the EMC. After these issues, I made the 470 and 452 circuits match the diagram by moving the CTS ground with the MAP. My MAT is still stuck on 60.7F. And this is my second EMC. So did you find other wires connected to your 472 circuit? I read your post from when you went though this and you said “i mixed up the +5V leads, TPS was at F16 and vice versa.” Using a meter I have confirmed several times that the lead I plug into F16 is going to the MAT sensor. The MAT sensor is reading the correct resistance for the temperature. What is really driving me crazy is I can unplug the wire at F16 and the ECM still reads 60.7F. So I wonder if there is a glitch in the $8d ADX file I am using.