Scotty Kilmer, mechanic for the last 46 years, shows how you can replace a broken blower motor in your car. And, If you like my car help, be sure to watch my live car talk show every Saturday morning at 10 AM CST on YouTube. I answer your car questions LIVE there. Just check it out at . And remember, every TUESDAY I upload a new video, so don't miss them.
The replacement of parts in the blower motor system are some of the easier repairs to perform on the automobile. However, there are a few vehicles out there that make it extremely difficult. You'll have to decide on your own if this is within your skill level.
If the test light reveals no voltage at the fan and my fuse is good, I confirm a solid ground before I move on. Next I'll head to the resister block assembly and check for power coming out of the resister itself. These are most often located in the heater case near the blower motor.
Usually, a blower motor resistor is installed inside the HVAC system so that air flowing through the HVAC system cools down the resistor. Due to constant heating and cooling, as well as with a moisture present in the air, some parts of the blower motor resistor can corrode, causing it to stop working. See the photo.