hey jeep guys need some help! I bought a 2000xj not running with a bad auto tranny, so the guy i got it from tried to fix the no start by crank sensor (witch i also replaced)timming set,coil pack,it acts like it wants to start may start and run for 2 seconds then die. does this year have a security chip in key? or you think it might be something with the trans that i hven't replaced yet. any info would be greatly appreciated.

 

Did you already trouble shoot for the gas pump ?