I posted this in the LT-1 section with little sucess--I got an exchange pcm from Pcmforless, on the original program i made the mistake of getting Bryan to set the idle to high--i sent it back to him, got the pcm back--hook it up and later drive to work, on the way at highway speed it started to stumble,saturday at slow speed it stumbled and threw my ses light, then it started to flash, then went steady and flashed again--Autozone sezs its a po200 code, a injector circuit problem--i checked my pcm connections--Do i have a bad pcm?? It wasnt doing this before i sent it back or did by chance this problem just happen?? Thanks Dwayne

 

I really need the help, i noticed also the exhaust didnt sound the same--- thanks Dwayne

 

Any ideas at all??

 

Dwayne since you just put the computer in and it is an exchange everything points to that. Take the computer back out. Look very closely to the red connector all the injector circuits go into this plug. Inj. 1 pin3, Inj. 2 pin19, Inj. 3 pin21, Inj. 4 pin4, Inj. 5 pin 20, Inj. 6 pin 5, Inj. 7 pin 6, and Inj. 8 pin 22. Inspect the connections very closely looking for anything bent or on the connector side pushed back. If it all looks good my guess is the computer. Hope that helps.

Corey

 

Thank you for the info--i will look again tuesday--not being a mechanic i will see what looks ok-- Ive been getting mostly smart remarks from the ones who know all this stuff--Thanks again Dwayne

 

I tried to help - and was one of the few people who even tried. Sorry you interpreted that as "smart remarks".... next time I'll know better.

Fred

 

Thats fine Fred , you did point me in the direction i needed to go, but some of you that know this stuff kinda get a your head swollen when you know someone doesnt have a clue and getting desperate for web help. I have waited hours/days before TTT ing . You said all i did was TTT---Had to bring it back to the top--So thanks for your help and i will check the red connector----Dwayne