hello everyone am quite new here need help asap !!

i have a 94 wrx and was driving along the other day and it just cut out?
i got it home and checked for spark and fuel
it had fuel going through but only one coil pack was sparking ?
so i checked power to the injectors and there was power there too!
i then got a new crank sensor it wasnt that ? i also took out the dash and checked the whole wiring loom this was fine ?
i then unplugged the engine bay loom and checked that that was fine .
i also took of inlet and replaced gaskets , while inlet was off i thought i would just try and get a spark and work with the wires within easy access ,
the fan is constantly on and i am still not getting no spark i have checked all the the earth points they seem good and i also have a type r and have swapped over relays and alike i am really lost ????
can anyone point me in the right direction
as this happened too any one before ?
i have also changed the blck fuse box holder and the one inside the car
i know its a wire somewhere or a realy maybe just need some guidance
thanks paul