overdrive not working on 2005 Ford Expedition

I need help!! I was driving my truck and pulled to a stop light. When the light change I pulled off but once I exceeded 50mph the engine reved up like it was in neutral. The truck kept repeating this until I cut off the overdrive. No signs or lights. Pease where can I start? Is there any fuses, relays or sensors that control the overdrive?????

by in Washington, DC on March 06, 2011
1 answer 2 comments
ANSWER by , March 06, 2011
There is no fuses that are particular to overdrive. First, check the condition of the fluid level, smell and color. If these are good, the concern may be electronic, but a diagnosis must be performed. Some transmission shops give free diagnosis. I hope this helps.
COMMENT by , October 04, 2014
I have the same problem in my 2003 expedition.
COMMENT by , October 04, 2014
I have the same problem in my 2003 expedition. did you find out what was wrong with yours.