[Diy_efi] ESC needed without knock sensor?

[steve ravet]

Greg Wolfe wrote:
> Project: GM 4.3L TBI install onto Toyota I-6.  ECM
> 747, HEI ignition module used with Toy dist.
> 
> I'm not using a knock sensor.  I also don't have an
> ESC module connected.  Without the ESC module
> connected is there some circuit that is now incomplete
> that the ECM is not controlling timing? Do I need an
> ESC without a knock sensor.

Do you have trouble codes?  Have you read in the archives about ESC and
how it works?  You should have an ESC module to make sure the ESC line
is driven to "no knock" (+12 or +5).  It may be pulled up inside the ECM
but it's smart to make sure.  You can still potentially get a code 43 if
you don't have a functional knock sensor.

This would be better asked on the gmecm list.

--steve


-- 
Steve Ravet
steve.ravet at arm.com
ARM,Inc.
www.arm.com

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