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That looks interesting.
I didn't see that one when I was looking around.

I spent about $230 on a LabNation SMARTSCOPE...

I didnt have much luck with the Realterm in Spy mode (monitoring of the port with in windows).
Seems that requires an extra driver that requires a donation and I saw several post from people that...

Thank you,
I didn't have much luck last night, but it was getting dark and I am getting sick
I may give this a rest for a couple of days, unless I go stir crazy after a day in bed

I was just...

wowzer,

I did try some more random addresses plus a few from the above table and a few from the SMEC T1 table
But still dont have anything more than 118(0x76) seems to be about TPS, ranges from...

Sounds like a reasonable approach for now
I started with the specific numbers you suggested
So far I have identified 118 as related to Throttle Position
Two others where getting data, but not sure...

Thank you

I just tried again
choices for SBECII are "SBECII T1" or "SBECII TIII"
SBECII T1 comes back with unable to open/setup port(just like FCC)
SBECII TIII acts like its working, but...

Thanks for jumping in
a return code for ECU ID sounds very promising

I originally started with FCC as an uneducated guess, but that's on of the few that still returns an error unable to open port...

I got a little better results today
I was originally using a fairly long RS232 cable to the RS232 port on my laptop
I have now switched to a short cable using USB to RS232 (FT232RL) and switched to...

I have a 1994 Dodge RAM B150 and I dont know what ECU I have
(LM, SMEC T1, SMEC T2, SBEC T1, SBEC TIII, SBECII T1, SBECII TIII, FCC, ???)
I don't know how to determine my ECU type

I have tried...