GM P3/P4 ECU scan tool's

[xxalexx at ix.netcom.com]

> Date:          Fri, 26 Jun 1998 13:08:39 -1000
> To:            DIY_EFI at efi332.eng.ohio-state.edu
> From:          Stuart Bunning <stuart at kenelec.com.au>
> Subject:       GM P3/P4 ECU scan tool's 
> Reply-to:      diy_efi at efi332.eng.ohio-state.edu

I have been working on a OBD2 scan tool for past 3 yrs. when nothing 
else to do.   I have a proto GM that uses VPW 10.4K baud.  
and sent a list member a ISO-9141 to rs232 converter, (i guess it is 
still working)  I plan on making the software shareware.
I have access to a Snap-off and  tech2  scanner and Hypertech 
programmer, currently have no access to a ALDL car, but can
help out any way possible.
alex     
> 
> Hi all
> 
> I am new to this list so please excuse me if this question has been asked
> several times before.
> 
> Is there any SHAREWARE/FREEWARE scan tools that allow me to monitor the GM
> ECU via a laptop. I am aware of DIACOM and tech 1 and other scan tools but
> they cost a bit. Before I spend hard earned cash I would like to check first.
> 
> I am currently trying to decode the ALDL streaming data that runs at 160
> baud or 8192 baud depending on what model ECU is being used I have nearly
> worked it out but still have a long way to go. Has anyone got or more to the
> point willing to give information on this protocol . Is there any shareware
> available?? If I am successful in writing a scan tool I would like to offer
> it at no cost to all.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Best Regards,
> 
> STUART BUNNING
> SALES ENGINEER
> KENELEC PTY LTD
> 2 APOLLO COURT
> BLACKBURN VICTORIA 3130
> AUSTRALIA
> 
> PHONE:   61 3 9878 2700
> FAX:        61 3 9878 0824
> EMAIL:    stuart.b at kenelec.com.au
> WEB:      http://www.kenelec.com.au/
> 
> 
>