No crank or start in 1996 chrysler sebring convertible. starter and distributor replaced. possible anti theft system malfunction

I have a 1996 Chrysler sebring convertible. We replaced the distributor and car started for about 2 weeks. stopped running again. we replaced starter and it started 4 times then died again. wants to crank over but won't run. took it to a mechanic. he got a reading bad distributor so he replaced the distributor again. we also had replaced all relays. the mechanic got the car to start up after replacing distributor again went to back it out of shop and it died again. we think it might be the anti theft device causing the engine to die.  Does anyone know if you can reset the anti theft device or disable it all together?? thanks!