Car starts sometimes. Var used to run perfectly until one day i parked the car and when i came back it would not start. I noticed the check engine light did not come on in the ignition position. I check all relays, fuses and even replaced the cam and crank sensors and still no luck. The next day i went out to the car and turned the key and the check engine light came on and the car started, once i drove to the store and them vehicle had heated up to normal operating temp and then i turned the vehicle off and went about my business. I came back to the car and when i turned the key again i noticed the check engine light did not come on, all other lights come on normally but check engine light still does not. Needless to say i attempted to start the car and the engine just turned over. But no start. I waited a few days and tried again, seen the check engine light on ignition position and the car started right up and ran great. Car got warm and when i shut it off, and tried to start again the check engine light didnt come on and when an attempt to start the engine just turned over and no start if anyone can please help it would greatly be appreciated