Hi .. hope someone can help..
2004, manual, 40k miles..
So the car will start great 50% of the time, or not start at all. Once running, will always run great..
Seems like the odds are same hot or cold..
When it doesnt want to start, I can crank it for a long time, (with only *rarely* a hint of fire in one cyl.. not like an injector issue )

I replaced CPS(bosch , crank ps, and just now the RCM.. no improvement.
It definitely sounds electrical to me.. maybe the (replaced) security module is acting up.. can it fail like this?

please help!!!
TIA

PS. no CEL, no codes