Hi everyone. I have an 03 focus and the blower motor has been acting up lately. If I run it on high for a couple minutes it shuts down to almost nothing. If I shut it off for a couple minutes it comes back on working fine for another couple minutes. I noticed just now while parked it also make s a bit of a growling noise when it's not working correctly. Is this just a bad motor or could it be something else? Thank you for any help.