It was running pretty clean when I got it done and drove it the first time, but coming home from work last night it seemed to have a fuel issue if I stomped on the gas. At least it's not a timing...

Alright, I fixed it some how. I replaced the riming chain which was stretched with a lot of slop, That was getting finished up when I started this post. I unplugged the passenger side O2 sensors,...

Both O2 sensor wire are purple/violet one is by the relay on passenger side and the other on drivers side close to the brake booster. Both had the O2 sensor clip on the end, so I just bought some O2...

The four letter code is "ANVA" which doesn't show up in the search.

The truck was an 89 but with a gen V goodwrench crate motor. I don't know the history of it.

The injector number is "GM...

I've been doing more research. This 1227747 ECM came with the 454. Is that normal? So basically I am using the ECM from the 454 with the other truck's wiring harness. Maybe that is causing the...

I can't figure it out. My research has led me here.

It is a gen V 454 TBI from a refrigerated box truck manual trans, 1227747 ECM (no knock sensor or ESC could be found) . I put it in a 1988...