I am researching and developing a stand alone TBI conversion for my AMC engines. I have an AMC 360 sitting on the floor in the garage. It's hooked up to a GM TBI system. I'm using a 7747 ECM with a 2732A chip (24 prong). I have eliminated the electronic spark control to keep this kit simple (so I thought). In doing so, I used the negative side of the coil to fire the injectors. ( FYI..It required making a tach filter to reduce the high frequency spikes resulting in a fried ecm.)

Anyhow, I am just one step away from having a working prototype. I just need to reprogram the chip to not read code 42 "electronic spark timing open circuit"

I understand that there are a lot if options out there. I want to stay away from the G2 Chip adaptor because I don't want to have to solder the circuit board.

What is the cheapest way to accomplish this?

 

One option to consider is a PROM Programmer from:

http://www.progshop.com/shop/program...rogrammer.html

This programmer supports the 2732 chip used in the 1227747 ECM.

If you need 2732 chips to program, try Jameco:

http://www.jameco.com/webapp/wcs/sto...oductId=40125&

 

In my previous post I posted the WRONG link for the programmer.

Here is the correct link I should have posted:

http://www.progshop.com/shop/program...rogrammer.html

Below is list of supported AMD 2732x chips


AM2732
(DIP 24)
Adapter: No adapter required
Manufacturer: AMD
Chip variants: AM2732-1DC, AM2732-DC
AM2732A
(DIP 24)
Adapter: No adapter required
Manufacturer: AMD
Chip variants: AM2732A-20DC, AM2732A-25DC, AM2732A-2DC,
AM2732A-30DC, AM2732A-3DC, AM2732A-45DC, AM2732A-4DC,
AM2732A-DC, AM2732A15DC, AM2732A15DI
AM2732B
(DIP 24)
Adapter: No adapter required
Manufacturer: AMD
Chip variants: AM2732B-100DC, AM2732B-100DI, AM2732B-
105DC, AM2732B-105DI, AM2732B-150DC, AM2732B-150DI,
AM2732B-155DC, AM2732B-155DI, AM2732B-200DC, AM2732B-
200DE, AM2732B-200DI, AM2732B-205DC, AM2732B-205DI,
AM2732B-250DC, AM2732B-250DE, AM2732B-250DI, AM2732B-
300DC, AM2732B-300DE, AM2732B-300DI, AM2732B-305DC,
AM2732B-305DI, AM2732B-450DC, AM2732B-450DE, AM2732B-
450DI, AM2732B-455DC, AM2732B-455DI, AM2732BDC,
AM2732BDI
AM2732B
(PLCC 32)
Adapter: PLCC32-DIP24
Manufacturer: AMD
Chip variants: AM2732B-100JC, AM2732B-100JI, AM2732B-
105JC, AM2732B-105JI, AM2732B-150JC, AM2732B-150JI,
AM2732B-155JC, AM2732B-155JI, AM2732B-200JC, AM2732B-
200JE, AM2732B-200JI, AM2732B-205JC, AM2732B-205JI,
AM2732B-250JC, AM2732B-250JE, AM2732B-250JI, AM2732B-
300JC, AM2732B-300JE, AM2732B-300JI, AM2732B-305JC,
AM2732B-305JI, AM2732B-450JC, AM2732B-450JE, AM2732B-
450JI, AM2732B-455JC, AM2732B-455JI, AM2732BJC, AM2732BJI

 

cant you just uncheck the flag for ESC so as to disable the ability to set the CE light?

 

I agree, unchecking the Err 42 in the ECM switch table will work. I would program a new PROM chip with the Err 42 unchecked. I might also make changes in the ECM constants table.

dave w