1998 Camry V6 starting problems
 

My '98 Camry has been having some starting problems and I'm looking for some ideas. First, sometimes it will start and then die about 2 seconds later. Second, sometimes I will turn the key and it won't do anything and sometimes it will start with no problems. I was thinking maybe battery, alternator, or starter but I'm not sure. There is a Locktronics system on the car that I was told could be shorting it out but I'm not sure. Any help would be great. Thanks.