Every now and then my truck will decide it dosn't feel like it and will do NOTHING when you turn the key? Then you wait 10-15 mins and it will magically work again just fine? I have codes for misfire, MAF sensor, and thermostat(replaced with non-electric one). Just today I ran to town, then was moving it around the yard turning it on/off a few times and then suddenly it decided NOPE! Not gonna start now. After jiggling cables and checking fuses and relays still nothing, I grabbed my code scanner to check and when I got back I tried the key and it started just fine? Whats up with this thing?

 

I had this issue with my truck and I replaced the relays in the black box in the engine bay (about $7 a piece) and haven't had any trouble since. My truck is a 1994 4.0 so I'm not sure on the difference but I thought I would leave a comment in case anybody else is havening trouble.

 

Clean the battery terminals and cable ends, BOTH of them, and tighten them up

If no dash lights come on with key on, then either positive or negative battery cable is not connected