2002 Jeep Liberty...sometimes starts, sometimes doesn't

Having the same problem here, Cranks but won't always start and now is dying while driving. Replaced fuel pump and filter and some sensors and relays, but nothing yet. Just picked up a cam sensor and pcv valve, will let you know if it works.

I recently had an ignition part break. it is between the key and the ignition module. if it intermitently doesn't even attempt to start like no juice is going through at all this part might be your problem . Found the tutorial on Youtube. It is also the part that locks your wheel in place. It was easy to replace. Made from pot metal and plastic. The end broke off that engages the ignition module. Found the box. bought at NAPA... Ignition Switch Pin 620-1414 is part no. on box. It wasn't very expensive... the key was turning but nothing was happening! I went through hell replacing a starter first then found out the starter wasn't the problem at all. took about 1/2 hour to replace this part.