Are you talking about the blower motor? If so, did you check good voltage and ground at the blower motor connector when problem is ongoing? If good voltage and ground with no blower action, suspect the blower motor. Sometimes those small motor brushes will wear down, if that happens, a vibration or bump may reset the brushes, momentarily, and the motor runs for a bit, then same old problem.
Saturday, March 19th, 2016 AT 9:47 PM