06 F250 COLD START DIAGNOSTIC HELP!!!!
i've got a 06 f-250 when first cranked in the morning sounds like it has air in the lines,it lopes and rattles but after a few minutes it levels off some and about a mile or two runs perfect. CAN PLUG IN AND IT WON'T DO IT. ficm 48.5v, icp926, ipr30.81, syc1 at idle after cranking. EOT is 79.6deg
i checked glow plugs yesterday all ohmned out. I've read on here could be gpcm but don't know how to test. I'm thinking since i can plug it in and does fine might be a glow plug heater problem? any help with this diagnosise would be helpfull.