First, let me say I am not very mechanically inclined, but I have read and read and read, I have a 2008 Nissan Titan 2WD that will crank but not start. For the past year it would very intermittently start to not start. I would sit there 30 seconds and try again and it would go. It gradually got worse with having to wait longer and in frequency of occurrence. I have done the following myself and with the guidance of a mechanic on a few other things. I have replaced the fuel pump, I did this because it would start for a second if I sprayed starter fluid into the intake. That did not fix it. I replaced the IPDM, and crank shaft position sensor, and I have a new battery, I tried starting it while being jumped, nothing still. The only thing I can find online that maybe it is the Anti Theft array not reading my key?? Also, the truck does not thro any codes. Talk about frustrating. Any advice would be greatly appreciated.