Chosen Solution
What could be the proble? I set the fan to low and it will go high and low by itself!!
Hi @velezgmario , It appears as though the blower motor resistor may be starting to fail. Once it fails completely then the fan will only work on the high setting. Here’s a link to a video that shows how to replace the blower motor resistor in a 2006 Ford Explorer. Not your model I know (couldn’t find a video for your model year range) but hopefully it is still good enough to be of some help.
