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618-457-8411 | 317 E Main St

AUTONET TV

AUTONET TV, Carbondale, IL

Such a Little Part (Climate Control Resistor)

Posted January 10, 2021 12:22 PM

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. 

The Auto Shop
317 East Main Street
Carbondale, Illinois 62901
618.457.8411



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I can't say enough about what a great auto repair place this is. Great people, Great customer service, Great Repair. I highly recommend The Auto Shop

, 11/16/2020

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Everyone is very knowledgeable and accommodating. They also have very quick service, always take care of everything, and try to make the process as easy as possible!

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Carbondale, IL

The Auto Shop was a life saver for me. I have a Land Rover that I just got not long ago. It needed a few fixes . They send you a report, call you if they spot anything wrong and will not fix it unless you say so. Jeremy and Stephanie at front office are really great people.

, 01/21/2020

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Carbondale

A fellow Veteran I serve on Honor Guard with works here, Brian Cleaver. He spoke highly of the place he worked at and Veterans always take care of other Veterans. The Auto Shop took great care of my 2003 Nissan Pathfinder. I really appreciated the report with images of the items I need to address with it. Low Pressure and didn't feel like I had to do anything I didn't want to. I depend highly on my vehicle and I was able to get it back in the same day. As a fellow small business owner, I also wanted to support a small business. Highly recommend The Auto Shop.

, 01/15/2020

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Carbondale

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, 12/11/2019
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