Question about Cars & Trucks
The fan is running but the amount of air coming out is minimal
Is it possible something is blocking the air flow such as a blend door ?
Or the blower cage is spinning on the motor shaft ?
Posted on Jul 28, 2013
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Posted on Jan 02, 2017
a relay is simply a switch that switches a high current with a lower current draw it its simple on the relay there should be a diagram one of the burnt wires should be hot at all times and that is the current you will try to alternate when the relay activates when it does the current will go to the blower so you already have two the other two you just need a positive current that usually comes from the bw switch with the key on and the other one is a ground to interact with the ac positive leat and actuate the relay, here is a diagram of a relay just substitute where it says to lights and let it say to blower motor
Posted on Jul 28, 2009
The blower motor resistor is what controls the speeds of the blower motor. It is under the battery tray.. you have to remove it to see the resistor, and there is 1 bolt holding it to the truck, with a (2 wire) plug going to it.
Posted on Dec 22, 2010
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