1998 - Expedition XLT - Strange noise when I accelerate
When I acceleate from a complete stop I get this whinning noise coming from what I think is the transfer case or transmission. It only does it when taking off and not always. It usually happens after traveling for a long time 1hr or more. I just went to Vegas and once I got off the frwy I made a stop at the light and when I accelerated it made this whinning/shuddering noise, as if the tranny was slipping. I had the transmission checked and serviced and the mechanic said the tranny was fine.
Any idea what is going on? Any help will be greatly appreciated.



