2000 Plymouth Neon cold weather start trouble?

you need to have the computer scanned on it to see if it will give any trouble codes,and you may also have a coil going bad,i own one of those cars and the coil wouldn't fire when it got real cold on it,by having the computer scanned though it will well you if its got any bad sensors that might cause this like a crank sensor or a bad tps sensor,or even a bad cam sensor,you need 40 or above on fuel pressure for that engine to run properly,so you may also have an issue with a bad fuel pump or relay going out on it,good luck with finding it,