Engine stalls or won't start unless it feels like it.

What is your question?

Okay so I do have bad oil pressure when idling but not when driving, it over heats, which my guess leads to the bad oil pressure probably a bad oil pump, but i parked it last year because it was dying on me and when i parked it, it would not start at all. Now it starts but still hard to start some times, the engine sounds good and strong while its running so my guess is it has weak fuel pressure, which i did replace the pump and fuel filter and that didnt have an impact on it. I just want more ideas about what could be up with it.