Pump Shot table Question $6E

[JN]

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