Car starts initially but if I turn off and try to start it again right away it won't start.

SOURCE: 93 dodge stealth SOHC V6 not starting right away

should check if the injectors are shooting the fuel, if not it could be your ecm

SOURCE: Car losing power and turning off

if your car is 2003+ try turning the key to run (but not crank) then to acc. 3 times and the engine codes will show up on the odometer, then you can look up what those codes are to help diagnose some of the problems.

SOURCE: car starting probs

u need a new key the Senty key Immobilizer module has not recognized a signal from the key during engine startup and means that the Skim anti-theft system has locked the engine down.

SOURCE: 1993 dogestealth

should check the crank position sensor

SOURCE: 2002 dodge ram truck

The check valve on the fuel line at the filter housing may be leaking back not maintaining pressure when the engine is not running.