Fan noise

[240zGraham73]

This morning when I was driving to school I turn the heater on and the fan starts making this loud annoying pinging noise. I know its the fan because I tested it on the vent too, same noise and the pinging increases speed as I turn the knob up higher. Any ideas, is my fan dying? Thanks

[geezer]

There are only two possible causes I can think of. Brush friction on the commutator surface of the blower motor is one. This is caused by deteriation of the brushes over time. The other cause could be any type of debris that has found its way to the blower cage. To find the problem and fix it you will more than likely have to remove the blower motor.

[EScanlon]

With the sound being "pinging", I'll bet you do have something that fell into the "squirrel" cage.

Simply remove the 3 bolts holding the fan motor to the fan motor housing and you should be able to withdraw the cage from the housing. Then see what fell in, either into the cage, or on the "floor" of the housing.

Don't think it's your fan motor dying, more than likely it is a twig, small stone, bit of rust/metal or even the plumber's putty that connects the air inlet to the cowl inlet.

HTH

E

[240zGraham73]

Thanks for the info, I'll check it out tommorrow.