my camaro will start and run fine when its cold, when the motor is warmed up and i shut it off it wont start. i checked the fuel rail and i got 42psi, checked spark and i have that. open up the throttle body and spray starting fluid, turn the key and let fuel pump run then start it with my foot on the gas and it starts. when its warmed up it idles kind of funny but then i give it gas and its good. i just bought an ecm, fuel pump, plug wires, ignition coil, fuel filter, changed oil & filter, i think the PROM might be bad but idk, i changed the ecm cause it got hot when i drove and the motor warmed up but it didnt come with the PROM. the 3 things for ignition are there but when its warmed up something is telling the fuel injectors not to fire right idk...... please help me solve this nightmare so i can still run the tpi

PS. the car sat for a while so thats y i changed the fuel filter/pump and oil/oil filter

 

HAVE AN 89 FORMULA 350 TPI. I JUST WENT THROUGH THIS. (VERY FRUSTRATING) FINALLY TOOK MINE TO THE SHOP. NARROWED THE PROB DOWN TO THE FUEL INJECTORS. THEY SAID RESISTANCE TESTED FINE COLD, BUT WHEN TESTED HOT 4 OF THE 8 WOULD LOSE RESISTANCE THUS NOT FIRING PROPERLY. THEY QOUTED ME GET READY $2400. SO I PICKED UP MY CAR WENT HOME CALLED JEGS MAIL ORDER. THEY TOLD ME I NEEDED 21# INJECTORS SO I PURCHASED A SET OF ACCEL BRAND 21# INJECTORS FOR $278.00, TPI INTAKE GASKET SET $40. FOLLOWED THE SERVICE MANUAL AND WAS DONE IN ABOUT 4 1/2 HOURS. THEY WERE RIGHT, STARTS EVERY TIME NOW, JUST PASSED SMOG YESTERDAY. STOAKED