Hi i have a brand new 350 from goodwrench and i riged it up with my tbi. The truck has always been a tbi and a 350. I did however put a single plane intake with a adapter plate and bolted on my tbi.

the problem goes like this, I start my truck it idles butifuly and about when my truck used to idle down it starts to dump gas. So much so that the truck dies and i have to pull the plug and spray out the gas to get it to start again.

things i done:
- replaced the map, distibuter, wires, plugs, oxygen sensor, knock sensor, esc, ecm, checked wiring cotinuty, bot the gauge and ecm temp sensor,and finaly the iac.

does anyone have a clue why this is happening