Car shuts off randomly, won't start until engine is cold

[dnguyen1963]

Things expand when warm, usually vacuum leaks are present when cold, but not warm. That doesn't make sense to me. Also, the fact that it doesn't even try to start at all, like no cranking, means that it's probably not a vacuum problem. Sounds more like a grounding issue. The hot/cold thing doesn't make sense though.

The only thing I can think of is heat soak. A hot wire will have a greater resistance than a cold wire. So it may be that something is getting funky when the hot engine heat soaks the engine bay.

Not always true...when things expand, vacuum leaks can develop at places like the throttle body or valve cover.

[LounsRacingInc]

Not always true...when things expand, vacuum leaks can develop at places like the throttle body or valve cover.

You are both correct, vacuum leaks could be caused by heat or cold (although heat is not as common as cold) but if you don't have switching on the negative side of the coil the issue is not vacuum related, its electrical and has to do with a sensor or wire that is effected by heat

[LounsRacingInc]

Ok. Both sensors are good, Ignit ion coil does light up. I just put in a new coil, Cap and rotor, and crank sensor

Does it light up and stay lit? or does it flash when cranking, you should see a very distinct flashing while cranking