Closed Loop Disable in $6E

[Michael Davis]

degC = (HEX_VALUE * 0.75 - 40)

$6B => ~40 degC

degF = degC * 1.8 + 32

$6B => ~112 degF

mike

In message <8CFC65F1B157D411B42A009027E301B5CBBD26 at xlvmail.xlvision.com>,"Marte
ney, Steven J." writes:
>Simply out of curiousity (I'm going to burn a chip and try it for the
>halibut) the value at $445 in $6E is $6B.  If I use Craig Moates' Qbasic
>code for 165 ALDL comm it equated to 104.45 deg (assume F) using the
>following formula:
>
>degF = (HEX_VALUE * .75 - 40) * 1.8 + 32
>
>If I assume it simply correlates to direct temp then it is either 107degF or
>107degC.  Any idea which way is right?  Just curious mind you.
>
>Thanks for the help!!!  I got discouraged when I thought I might not be able
>to tune this car in open loop to see if I could get the mileage up before
>taking other more drastic measures.
>
>Steve
>
>-----Original Message-----
>From: Bruce Plecan [mailto:nacelp at bright.net]
>Sent: Tuesday, January 30, 2001 12:45 PM
>To: gmecm at diy-efi.org
>Subject: Re: Closed Loop Disable in $6E 
>
>
>
>Take say Hexshop,
>go to 0445
>set to FE
>correct check sum
>Drive car.
>
>My *way*
>also disable, codes  13-44-45
>I have seen a few 747s get confused by not diabling the diagnostice flags,
>so rather then risk messin around, I just do it all at once.
>Cheers
>Bruce
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