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; 3 Weeks 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???
What won't work????
There is the option to convert a ‘7730 V6 Memcal to a ‘7730 V8 Memcal.
http://www.gearhead-efi.com/Fuel-Inj...l-mod-quetions
V6 to V8 Modification.JPG
ALZL.jpg
Modifying the '7730 V6 Memcal for V8 is low cost, simple, and very effective. I've been there, done that, and the results have provided many, many miles of smiles.
Last edited by dave w; 3 Weeks Ago at 05:23 PM.
Biggest issue is if the hardware is in different locations. '165 code sends a message to injector driver to fire injectors but 730 board says "Nobody at that address."The '7165 ecm uses a 16k memcal eprom, the '7730 uses a 32k memcal eprom. Completely different instruction set.
7165 can run $12P Holden speed density code.
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