Originally Posted by 95bluebird
maybe some here can help me.........took the bus out for drive and she takes so long to get up to speed and wont go over 45-50 mph.......when I first got her she was a little better but she slowly gets slower and slower...............any ideas on what the problem could be?
not sure on the trans but its auto
rear end is 5.3 ratio
If you're regressively losing power it could be many things. I would first check for a dirty fuel filter, then for any fuel leaks. Also check the pipes between the turbo to the intercooler (the left "rad") and from the intercooler to the engine. There are rubber boots that connect the pipes and one could be split or leaking.
Another possibility (which is a huge pain in the arse) is that the up pipes from the exhaust manifolds to the turbo are leaking. This is a common issue with the earlier t444es.
When searching Google for these issues you'll often be better off searching for "7.3 powerstroke" instead of "t444e". The engine configurations aren't identical, but are very close.