2008Ranger 6x6 starts fine then runs for a minute or so thenstops, as if the ignition was shut off. The unit will restart then again repeats the stop cycle this will repeat 3 to 4 times then quits and then the 6x6 will run and function normally. Stumped as to the cause, fuel pump good, fuel filter replaced, and all ignition connections checked. I sure could use some help solving this bug.