2000 maxima se automatic crancks and make explosions like it wants to start but nothing

Explosions? Like back firing?

Yes sims like they comes from the throttle body and smells bad like something burning

Your engine is out of timing. This means that the cylinders are not firing off in the correct order. Since its backfiring and sounds like explosions, it's gotta be close to 180° out

Ok so what you recommend me to do its that something I can do my self?

Sometimes you can sometimes you can't. Get with your local shop first. Because some vehicles have to be reset by computer. Just make a phone call when you get the chance and let me know what they say

Ok I'm going to call them right know see if I can get an answer and I let you know thanks

Did it start doing this out of nowhere or where you working on something with the disributer or what?

I haven't touch the distributer at all, the car it's always cranking with no results so I replaced the fuel pump, starter, spark plugs, ignition coils, ignition switch, crank n cam sensors, speed sensor, checked all the fuses n relays n the car still doing the same. The car was turning on like a bran new all started when they repaired the transmission then started to turn on not all the time n now don't turn on at all

Buy the way I already called to nissan dealer and they want me to drop it off to scan it even that I told them it's been scanned already with no codes reading he want me to take it anyways n he's charging me $130 for diagnostic plus whatever they have to do to it n yes it has to be reseted by computer if that's what the car needs

I kinda figured. Most vehicles have to be done by computer. But good luck

Ok thanks for your help n your answers

Change the Camshaft senor $60.00 at autozone