My 7165 ecm will not fire injectors, checked every thing i could, so thinking about moving to a 7730 . The question is will the memcal from the 7165 work in the 7730?
I am using the moates adaptor
My 7165 ecm will not fire injectors, checked every thing i could, so thinking about moving to a 7730 . The question is will the memcal from the 7165 work in the 7730?
I am using the moates adaptor
Memcal: No. . . as far as I know, never tried a '7165 Memcal in a '7730. I usually convert a V6 '7730 Memcal to a V8 7730 Memcal. https://www.thirdgen.org/forums/diy-...l-mod-run.htmlOriginally Posted by Gator
Adapter board: Yes, works with the Memcal for a '7730
Sure it is getting a reference pulse from the ignition control module. The module can fail, still provide a spark and not send a reference pulse to the ECM. Wiring between the distributor and ECM can also fail resulting in the same.
Netress is the same for both ecms just need appropriate $8d tune and a 27c256 chip. You can run a external esc on pin b8 of the 730.
Awesome to learn the netress is the same.
Would I be correct that the external ESC uses the 100k knock sensor? Possibly Standard Motor Products KS7?
Thanks everyone, I did get my old 7747 to run engine although not very well. i have read it is possible but would be better off moving to the 7730.
Forgive me but what is netress?, and to I need to add a resistor to the knock sensor or just connect the esc to B8 on the 7730
Yes, that is correct. The 3.9k ohm ks works only with real v8 esc knock boards. The 86-89 netress on the 165 will have a different number on them than the aujp,anjf but the 89 165 netress was the same part number as 90-92 730 ecm. They all work and get the same firing rate and lhm.
Great thanks for the info, I will post the outcome when I get the 7730 installed.
Would I be correct the netress is a network of resistors used limp home fueling?
Would I be correct cylinder select sets up injector firing sequence?
another question, you said connect knock sensor to B8, the pin out has it connected to F9. so am I to use B8 because I am not using a memcal specifically for the 7730????
Ok have the 7730 ecm with 7165 memcal installed, external est(knock) connected to b8, I am getting code 43 knock sensor failure, do I need to add 3.9 resistor to ground on pin f9?
Or move from b8 to f9 and use a 3.9 resistor? Seems like everything i have read does not really address the 7730 with 7165 mem cal which does not have the knock filter on memcal.
Any help will be greatly appreciated
Possibly an ESC Module is required.
The picture below is for TBI not TPI and is for reference only, do not use as a wiring diagram.
1227730 TPI did not use an external ESC Module, but many TBI computers used external ESC Modules.
The early TBI computers, with external ESC Modules used a 100K Ohm knock sensor.
code43tbi.gif
Just turn of the ks in the $8d tune 020c o20d iirc
Last edited by Tunedperformance; 4 Days Ago at 12:56 AM.
Thanks For the info, however I am having bigger issues with 7730 the car ran with 7747 ecm although not very well, with the 7730 I have spark, the injectors are firing but will not run.
as far as I can tell VATS is disabled. Any thoughts???
I'm pretty sure that won't work.
-Carl
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