I recently bought a 91 firebird with the 3.1 I’m having a start stall issue. The issue is persistent. It will start up immediately then just stall. I’ve replaced plugs,wires, ICM, cap, button and coil.
ive also replaced the injectors with southbay. The fuel pump. Fuel filter. Replaced EGR valve and gasket. Replaced TPS and IAC. And replaced Temp coolant sensor. I’m at a loss. It has good fuel pressure. Good spark and starts up everytime just stalls immediately. What the heck am I missing?

 

Can you keep it running with starting fluid ?
and if you can does a noid continue to blink ?

 

Yes, it stays running with fuel being sprayed through throttle body. And I haven’t tried a noid on the injector plug when it does this. You have any idea on what it could be?

 

Pu coil, bad ecm, wire from icm to ecm

 

Will it stay running if you hit the gas?