i repinned my 165 harness to work with the 730 ecm. The computer is not advancing the timing as rpm increases. I can set the base timing but when i plug the tan/black wire back in, it makes no difference. It just stays at 8* or whatever. What all would cause this? BTW, everything is in question here because ive never had this car running..i bought the car with a blown motor (L98) and put a new motor in it and also did the 730 swap, so im not real sure if the esc module is good, etc, etc. I just need to understand this esc circuit and how the 730 differs from the 165 as far as the esc goes. BTW i am getting a code 42 and 43. Any help would be appreciated.

 

What MEMCAL are you running? Given the ESC board is located on the MEMCAL there's need to be running the right one.

 

im running a 730 out of a 91 Fbody (L98) so it should have the correct memcal.

 

formula

did you replace the knock sensor with a 90 up sensor, I had this problem when I converted from 165 to 730, also a bad knock sensor connection will cause this as well