Symptoms of a Bad or Failing AC Fan Control Module

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An A/C fan control module helps to control the blower that supplies air to the cabin of a vehicle, as well as the cooling fans. The module helps to make sure that the cool air that is produced within the A/C system of a car is blown into the cabin. The A/C fans that are mounted in near the radiator of the car are also controlled by this module.

Usually, you will have a variety of signs that the A/C fan control module is going out. If the cooling fans begin to run erratically, then you may have a problem with the control module. Letting this type of issue linger can lead to a number of issues that can cause damage to your car. Getting the A/C fan control module replaced can save you a lot of time and money.

1. Cooling fans running for a long time

The cooling fans under the hood of your car are designed to keep the components of the system at a lower temperature. Usually, these fans will come on when the system gets a bit too hot and the go off once the desired temperature is reached. If you notice that the cooling fans run for a very long time without shutting off, then the A/C fan control module may need to be replaced.

2. Cooling fans not running at all

If the cooling fans are not coming on at all, then this may also be a sign that the fan control module is damaged. Without the cooling fans running properly, you will be at risk of having the car overheat. Running a car hot for a long period of time can lead to other damages like a blown head gasket.

2. Weakened air flow

Since this relay works the blower motor as well, you may notice that the air flow in the cabin of the vehicle is significantly reduced. The module helps to regulate how hard the blower motor works when needed, which is why it will cease to work with this part. Having a weakened air flow can cause the cabin of the vehicle to become very warm. The only way to fix this issue is by getting the AC fan control module replaced.


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Thomas

11 years of experience
72 reviews
Thomas
11 years of experience
Ford Mustang - Car is overheating - Titusville, Florida
Thomas was great! Very knowledgeable and honest. Went above and beyond to perform his duties for his job. I will definitely get Thomas again, and trust any car I habe to him.
Ford Fiesta - Car is overheating - Orlando, Florida
Thomas was on time and friendly. He explained his findings in a way that made me feel confident in making a repair decision. I will would absolutely recommend Thomas and I will be using him in the near future.

Gustavo

15 years of experience
44 reviews
Gustavo
15 years of experience
Honda Odyssey - Car is overheating - New Braunfels, Texas
Gustavo was very professional came on time diagnosed our van told us what the problems were and was very kind and professional about definitely recommend him 
Ford Focus - Car is overheating - San Marcos, Texas
He was efficient in checking for the cause of my car overheating. Offered me the best cost friendly solution after the inspection to help me get back on the road.

Chris

16 years of experience
335 reviews
Chris
16 years of experience
Mazda 6 - Car is overheating - Pearland, Texas
I thank Chris for his Professionaal attention that gave to me and my daughter concerning her car repair. Looking forward for him to repair her car and praying that the problem will be fixed.
Ford Edge - Car is overheating - Houston, Texas
Chris was very helpful and thorough in finding out and explaining what was really wrong with my truck.

Deane

9 years of experience
272 reviews
Deane
9 years of experience
Jaguar X-Type - Car is overheating - El Cajon, California
He looked at my car and realized the problem was something other than I thought. He took time to correctly diagnose the issue. He was personable and knowledgeable.

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