I am about to order everything I need to start burning my own proms, my question is I can't get any scan tool to read what my car is doing since my swap. went from 305tbi to 350 tpi, the car is a 91 rs. Can anyone lead me in the right direction?

 

check to make sure your pinout for the aldl link is correct you may also have to check thre aldl connector itself gm moved the data pin a few times over the years.

 

does anyone know which pin is the data link coming out of the ecm to the aldl. I figure I will need to bypass or switch it around. The computer is from a 91 sd l98. Checked in the Helms manuall last night but couldn't find anything. Thanks for your help in advance.

 

It's in the electrical part that shows pinning for all the pins in the ECM.

ftp://ftp.diy-efi.org/pub/gmecm/manu...730v8tpi-1.jpg

If you are using Diacom, it will read pin M, so repin accordingly.

 

the ornage wire going to the ALDL connector iself should be on pin M for that ecm.

you should also check to make sure its on the corretc pins at the ecm.

 

hehe. I looked at that diagram last night, I missed that 461-org wire. I will fix it up tomorrow. Thanks alot I knew you guys could help!

 

hehe. I looked at that diagram last night, I missed that 461-org wire. I will fix it up tomorrow. Thanks alot I knew you guys could help! double post

 

ok the data link is hooked up to E. On the M **** I have a light brown wire? I disconnected it and it hooked up the orange wire and walla it works now. Any problems with unhooking the brown wire? THanks again for the help

 

i think the brown wire on the aldl for the 165 is for TCC indicator. thats about it i guess itll be ok. as long as it talks man its all good/