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June 4, 2023
You expect your heater/air conditioner to work like it should. You have a control for temperature and one for fan speed. You even have a control for what vents the air comes out of.
Don't be surprised one day if your blower fan develops a mind of its own and starts going crazy. Most of the time, you may find that it starts blowing at full speed, and nothing you do to try to control it does any good. This is what may be happening.
Your blower motor has an electronic component called a resistor. It does what its name says; it offers resistance. When you want the fan to run more slowly, you turn the fan speed down. That resistor accomplishes that by turning its resistance up. When the resistor fails, the power has nothing to slow it and the fan speeds up.
It's a small part and can fail due to age or corrosion. It's usually not an expensive part, either, but it's often found in a location that's not that easy for the technician to get to. That means labor costs will vary depending on the design of your vehicle.
Occasionally, a faulty resistor can cause the blower motor not to work at all or only partially come on. But other things can cause that as well, such as a faulty fan switch or vent control.
This is where a technician's training comes in. Special equipment can track down precisely where the issue is so you can be assured the correct part is being replaced.
It's just not pleasant when the blower motor isn't following orders. Have your service facility check it out so you can be the blower's boss, like it should be.
Tuffy Tire & Auto Service Homer Glen
15743 S Bell Rd
Homer Glen, Illinois 60491
708-301-8885
May 5, 2024
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April 28, 2024
You've probably had your Check Engine Light go on. Then it goes off and you figure, hey, whatever the problem was, it's gone now and I don't have to worry about it. Well, the problem may have gone away and it may not have. Your vehicle likely has one of these warning lights on the instrument pa... More
April 21, 2024
When you turn on the air conditioning in your vehicle, you expect cool air to come out of the vents. You depend on it, especially in hot weather, but it can also be important in humid weather when you need it to help defrost your windows and windshield. The air conditioning system has a lot of p... More
