1226870/1227165 conversion

rr RRauscher at nni.com
Fri Jun 16 03:07:07 GMT 2000


My guess is that the engine is in true limp mode. Is the checksum
correct on the new vette chip?

BobR.

Jeff Kopp wrote:

> Need some help with a strange problem.  I recently converted from a 1226870
> ECM to a 1227165 to obtain the faster baud rate in order to help with my
> tuning education (1226870 just way too slow).  I was fighting a no start
> problem with the conversion when I realized that the '86 Vette chip
> (BUB1726) was a VATS chip so I tried a '87 F-body chip (ACXZ1122) and it
> fired right up.  I compared the chips in Tunercat and deducted that I should
> start with disabling the VATS option on the Vette chip and try it again.
> Car starts with the Vette chip now but it does something very strange.  The
> CEL flashes at a steady rate and each time it comes on the car stalls for an
> instant - kinda sits there and surges evenly.  I'm new to this and have
> learned a lot by sitting back and soaking it in - you all are geniuses.  Any
> input on this one?
>
> ----------------------------------------------------------------------------
> 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




More information about the Gmecm mailing list