I got the 80E in and at first start truck wouldn't stay on and finally truck would idle and stay on. Tuner came by to tune it but now truck won't stay. I'm using a adapter harness and the extra sensor connector not sure what brand. Any info is appreciated!

 

Truck does have segment swap on pcm now but still won't stay on

 

Have you check all the grounds? Make sure you didn't pinch the harness between the block and bell housing

 

so the tuner left you with a non running truck?

 

I'll check tomorrow

 

Well you make sound bad for him. He went tuned it and truck still won't stay on it's not tuning issue he tried 3 tunes and each one acted the same and it did this when I first swapped it in. He not the one who did the swap so I don't see him liable to make it run right if he didn't do the swap,he would have helped but he was leaving out of town otherwise he would have stayed

 

Is there anyway you can post your tune on here? I can take a look at it if you can. I did a 80e swap a month ago.