One problem related to ignition has been reported for the 2006 Ford Expedition. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Ford Expedition based on all problems reported for the 2006 Expedition.
My wife was driving her 2006 Ford Expedition down a busy road at a speed of about 40 mph. She was driving with another friend and our 2 children (18 months and 1 week!) a wrench symbol warning light came on and the vehicle shut down. She put on her hazards and was able to safely come to a stop. She turned the ignition key to the off position and then was able to start the engine again. After talking to a mechanic and doing internet research I found this is a very common problem which consists of the electronic control of the throttle. The fix is upwards of $500; so a recall of something that expensive can easily be brushed under the table by Ford. This problem needs to be addressed by Ford. If more vehicles keep shutting down on their own someone will soon be injured or killed.