Nother checksum question

[Mark Romans]

Hi All;   with GM ecm's if the checksum is wrong,  the car runs in fuel
backup.  Check Engine Light comes on.

Mark.
-----Original Message-----
From: bruce plecan <nacelp at bright.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, February 01, 1998 7:43 PM
Subject: Re: Nother checksum question


>Other than lossing a fault code, or needing to
>change a prom during early diagnostics, what downsides
>are there to not running checksums?.
>TIA Bruce     Worst answer given a cop by author,
>                    cop: I wanna see three things from ya
>                       driver's lic., registration, and deed to
>                       town X being your own personal
>                       race track
>                    me: would ya settle for two outta three
>