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View Full Version : 1228747 to 16197427 PCM Conversion mostly complete



Chewy1576
03-05-2016, 08:39 AM
I finished repinning the two ECM plugs to the red and blue ones yesterday. Dave and Mark's notes for replacing a 1227747 was mostly accurate for a 1228747. Today was joining the dark blue wire from the knock sensor to the ESC Module and the yellow/black wire from the ESC Module to the ECM, and replacing the knock sensor with a KS6 sensor for the newer TBI 350's. Moates G1 Adapter and low profile ZIF allowed use of the 27SF512 EPROM.

I started with the stock BJDR bin and updated for 383 CI, 80.5 lb/hr injectors @ 18 psi fuel pressure, and smoothed out the VE and Spark Tables. On first start, it took longer to fire but it did, then died. I have to give it a little throttle to get it to start and idle, then it is fine. Hot restart will idle fine, but if it sits for any period of time I have to give a little throttle to get it to start again. Does this mean the Crank to Run RPM value is too high? Or not enough fuel during cranking?

Chewy1576
03-05-2016, 10:15 PM
More info...

Tried to start it again this morning and nothing. I ran a quick log when trying to start and the fuel pump is never running, and the Tachometer RPM seem way off. I have attached the current BIN and log file.

Chewy1576
03-07-2016, 06:44 PM
Figured it out. One of the terminals in the IAC plug came loose.