My sampler blower motor is making a loud noise when I start the car up and sometime when I'm driving. I think it is the sampler blower motor because the sound comes from the passanger dash.

When I smack under the glovebox the sound stops. sometimes it will start back up in a few mins., other times it will take days for the sound to come back.

Also, I am not sure if the heater blower motor is located in the same location behind the glove box. The reason I'm saying that is a few days ago my heater was not blowing any heat at all i could hear a clicking noise when I pressed buttons on the a/c - heater control unit but nothing would happen.

Then when I dopped my co-worker off at his place he shut the passanger door and the heater came on. Also, on the way to work today the the Heater and a/c worked correctly. I cycled through the buttons....

Does anyone have any Ideas?
Thanks