when I start the truck when it has cooled down the relays start to click but after I leave the ignition switch turned on a while, then after they stop clicking (with check engine and gen light intermiting ) I have checked the wiring that plugs into the coil and the power also intermits with the relays until the relays stop then has solid power and it will start then, I have changed all the relays that are located by the battery, no change. So when I get ready to go somewhere I must go and turn the ignition on and walk away, wait about 5 to 10 minutes and then the truck will start n run fine.