my son recently bought a 2000 dodge neon for basic trans. yesterday had a problem with the key not turning in ignition so we replaced it. at first engine started but soon died out. this happened a few times now nothing but relays click. it has a factory alarm but we dont have a remote (was told it didnt have one) could this be the alarms doing through computer, can i disable this or maybe something else. any help appreciated

 

Was the original key gray?