hi hope someone can help me i have a 1990 chevy c1500 5.7L tbi silverado and the problem is this when i try to start ,it stalls in idle, the only way it will stay on is that i keep accellerating it otherwise it stalls , i had the iac,the map,the tps replaced and i still have the problem please help.

 

you are throwing parts at it. What's your fuel pressure?

 

No I've only changed parts that the mechanic suggested I also replaced the fuel pump. But I found the problem. That no one in the past month could. The problem was that the pickup coil was broken and wasn't reading correctly. Problem fixed thanks anyways it's really appreciated.