Need some advice on my 86 gt , 5l speed , no start problem, I have followed the no start check list several times with no luck, have replaced the pump and filter , coil , cap and rotor and wires, and Tfi module, pump primes , good pressure at rails , spark at coil , and plugs , checked power at injectors 12v, did noid light test got good pulse, Tps is good , car turns over good , new battery , cleaned grounds etc. car will start for a second with throttle wide open but dies quickly , I know I must be missing something, bad ecm ?Thanks for any advice