The Fox has been overheating if I sit still in traffic. Today when it did it I popped the hood and steam was pouring out of the water rec=servoir but the water level was at the full line. I noticed the fan (big one) wasnt turning so I gave it a little push with my hand and it started turning then the water from the reservoir got sucked in. Is the fan bad? can I take it appart and maybe change the brushes on it? and how hard is it to take it out? Any info would be gold at this point...thanks!!! JP.