Pump Shot table Question $6E

[Romans, Mark]

Jason:  It looks to me like the ecm still uses AE between 133 and 176
degrees, it just
doesn't multiply it by whatever multiplier.
For example at 56dec C.  The multiplier is .195.  If you take N=E*256
.195*256= 49.92, so it appears that .195 multiplier = a 49.92% increase in
AE pumpshot.
So looks like you might want to take that multiplier a bit higher up the
temp list to see what
happens.
Mark
----- Original Message -----
From: "JN" <jwn at sgi.net>
To: <gmecm at diy-efi.org>
Sent: Monday, November 20, 2000 6:15 AM
Subject: Pump Shot table Question $6E


> Thought I'd take a shot at on the list to see if anyone knows the answer.
> The table that I have been modifying to get rid of the dead lean and back
> fire on my 89 vette was the pump shot table listed as AE Enrichment vs
> change in LV8.  This is listed as a value between 0 and .99 that can be
> changed to increase AE fuel vs a change in LV8.  There is also a table
were
> you can tell the ECM how many pulses above the base pulse width to add for
> each of the 8 AE Enrichment pulses.
>
> Here is where I'm at.  I can get rid of the problem by modifying the above
> tables only when cold.  As soon as she warms up it acts up again and pulse
> widths don't increase as much as when cold.  So I then looking at all the
> threads about the WOT tables that uses coolant factors and RPM factors to
> calculate AFR it hit me to look at the AE fuel vs coolant temp.  There it
> was.  A big drop in AE fuel from 133 degrees to 176 degrees.   Above 176
> degrees there is no AE enrichment.
>
>    So after all of this rambling, does anyone know how the ECM calculates
> the correct AE fuel using both the Delta LV8 and Coolant temp?
>
> Thank you,
> Jason Norris
>
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org