Your 98 neon sometimes makes a funny noise from behind the dash when you shut it off If you hear this noise you know it will not start the next time you try to use it The first couple of times it star?

It's possible that what you are hearing is air bubbles in your heater core from a blown head gasket or cracked head leaking into the cooling system. If coolant is leaking into a cylinder, that could cause it not to start until it evaporates. Check for wet plugs after you hear this noise. Also check for excessive exaust smoke, bubbles in the coolant, water in the oil or vice-versa, and visable leaks around the head. A compression test may also find the problem.