My grand Cherokee was running good the shut it off and went to drive it later and no fire. The fuel pump when u turn the key to the start position kicks on and stays on. also none of my gauges work. Only light comes onis the abs brake light.

Changed:
Crank sensor
Cam sensor
Coil
Asd relay

 

Look for a bad fuse maybe?

 

Check your battery

 

It cranks fine just no fire. I don't think the battery would be the problem then. Could my o2 sensor be shorting out my fuse to my PCM.

 

A low battery will crank the engine fine, but there is too much of a voltage drop to power the ignition and fuel pump while cranking. I just had a Dodge Ram that would crank fine, but would not start. I load tested the battery and found it dropping below 9 volts with only a 150amps loading it. I replaced the battery and the truck started right up.

 

Pretty sure that if the check engine light isnt coming on hen you turn the key on, then the computer is not communicating, which usually points to a bad pcm.

http://my.cardone.com/techdocs/PT%2079-0003.pdf