99 Ford Expedition 5.4 - Engine runs okay, but drives like the brakes are on. Very sluggish
I hear a whinning sound from the front while driving and feels like something is holding it
back. ( like the brakes are applied ) I have had a new transfer case installed about a year
ago. Never had any transmission problems. Anybody got any ideas? I spent alot of
money replacing ignition coils and spark plugs. So, the engine seems to run fine. I think
it is a problem in the drive train.