im reposting this in the right place this time. i have a 01 with 97,000 miles on it. the truck wouldnt start without plugging it in when temps dropped below 30 degrees. when it started it idled and ran like a champ(as much as these can run anyway) i changed the glowplugs, left the shop hit the highway and it felt like i was trying to pull a 100,000 lb trailer! no power what so ever. i checked the air to air boots, electrical plugs and everything that i unhooked and unplugged and it all checks out ok. what the hell did i do? what did i miss? thanks in advance for the help!