94 Camry will not start or dies wile running and when I turn key on all warning lights light-up except the check engine light.

HELP ME.. We can noticeably see that when the car shuts off or wont start up, it will not be showing us the check engine light lit-up on the dash like all the others do when first turning the key to on position ..(so picture all the lights flash on the dash like normal when turning on key first time, except the check engine light, this tells me its not going to start!).. and crank crank crank but no start every time!  if you cut the key off and wait, then turn the key back on and sometimes the check engine light lights-up along with all the other gauges and it will start like normal sometimes, Or when turning the key if you see no check-engine light = it wont start at all.
Then other times it shuts off wile running. You will notice the same thing when you try to start it back up, basically no check engine light turns on when turning the key to run, and then we will know it wont start back up..
We have changed all relays and fuel related parts-(fuel pump, relays, bla-bla) Ignition parts changed- Ignition switch, lock key ignition cylinder and all ignition parts under hood itself relays and fuzes, spent over 600$ no fixes to this.. its likely electric problem please help me, can mail me at onslowpainting@gmail.com