StangKiller93

I am 20 years old with 2400 hrs of driveabilty training and ase cerfied, anyways i just purcased this 93 gt with the 5.0 h.o. ,i have been digasnosing it forever, Runs great wont stall or anything, now if you cut the key off, and try to start it back up nothing.... if u unplug the coil while running and dont mess with the key you can go back and start it with the key all day long, now.. if u pull the fuel pump relay then crank her over she will run for a couple secs. die out and then put the relay back in and your good to go, i have replaced dizzy with ignition module and of course pick up coil. replaced ignition switch. suspected leaking fuel injectors pulled fuel rail up pressurized system, no leaks, i was very postive the engine was dumping fuel through leaking injectors but after this morning i verfied it and that wasnt the case, I tryed disconnecting coolant temp sensors and everything, i have had three vechiles in the past do the same systoms so i know what to look for. but nothing has matched up to this, Any ideas? please point me somewhere, as fore i am all about chevy. haha well there goes my help lol. but maybe someone has seen this before, so we have compression, spark, air, fuel, all strong and in specs, i have no clue what next.

AdderMk2

So do you have a crank/no start problem, or is it a no crank problem?

And ASE certifications dont mean ****. So don't throw it around like its supposed to get you anything... ok?

StangKiller93

Crank no start. and i just mentioned it as to say im not a do it yourself person, i do this for a living and pretty envolved in driveablity.

Bubba 95SN

Darn man,whutiszup? Ok, so what is up on the fuel pressure? Key on the engine running with vacum hose disconnected, what is pressure? Ok, PM.

enix187

just sounds like your ignition switch may be melting/malfunctioning. Doesn't crank at all after hot, does that mean you can start it cut it off and restart it immediately?

StangKiller93

no you shut it off and immdetly try to restart it kinda trys for sec and never does start