I have had this truck in 3 different shops and none of them could figure it out. The codes say misfire in cyl 2 and 5 bank 1 too lean and primary and secondary circuits malfunctioning for ignition coil. Ive replaced the ign coil cap plugs rotor pcv fuel pump pick up coil cat o2 sensors and all sensors under the hood. switched out all vaccum lines cleaned the IAC and checked the pulse ring. The truck looses all power and either dies or backfires and regains power randomly. If i drive at night it will stall and keep cranking when trying to restart. Usually have to let it sit for ten minutes for it to turn back over. Last night it backfired and stalled every 50 ft for over a mile. During the day it revs up and down at idle between 600 and 800 rpm. please help

 

Lots of possibilities, on is the wires that feed each injector with power are spliced together, double check those.