Vehicle overheating. Excess fan noise at high speed is caused by the same problem, a seized fan clutch. If you are a computer user then you can visually inspect if the fan of your computer is working or not. So, do not worry if the fan doesn’t immediately start working. Depending on if and when the radiator fan comes on will affect what you should do next, and if the radiator fan has stopped working. The ECU signals the radiator fan to work at the precise time. See Contact Test in Step 1. Run jumper wires between the connector's two electrical terminals. If the fan does not turn on, you will need to replace it. Radiator Fan Cost. Fans that continue to spin very fast and make abnormal or loud noise might indicate a problem. However, the radiator fan does not always start spinning on ignition. You can see the back case of the computer and find out if the fan is rotating or not. For more information on dealing with potential problems with your car radiator fan, chat with a knowledgeable expert at your local NAPA AUTO PARTS store. Figure 3. Under normal working conditions, it is normal for a PC to generate a fair amount of heat and become warm to touch depending on usage. Check computer fan is working or not by looking and listening to it. It's actually made up of thin pipes or tubes surrounded by thin, cooling fins. Check out all the heating and cooling products available on NAPA Online or trust one of our 17,000 NAPA AutoCare locations for routine maintenance and repairs. It can be easy to be fooled into believing that the fan isn’t working, so carry out a visual check to be absolutely certain. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. A radiator fan is not very expensive and can cost around $200 – $400. If the fan comes on when the air conditioning is operating at maximum volume, but doesn’t run properly when the engine is warm or hot, then you might need to check the temperature switch. As suggested Speccy is an excellent tool that I have used for a long time but also the ASUS motherboard I use (I built the computer) has a control system for the fans built into it which not only monitors fan speed and resultant temperatures but also allows you to control fan speeds so I have my case fans set to Quite mode and I hardly hear them. If the fan clutch seizes, it remains engaged all the time, cooling off the engine too much. There are a number of common problems with radiator fans, and if your vehicle has one of them, fixing it is relatively quick and cheap to administer. I tried Speed Fan but it doesnt detect my fans, same with Hwinfo, with I8kfanGUI i cant even install it (I think because of incompatibility). Radiator core: This is the main, large block component at the center of the radiator. Radiator fan testing points. Visual Check. Another symptom of a possible problem with the cooling or radiator fan motors is the vehicle overheating. Here is how to test if the fan is functioning properly: Unplug the radiator fan connector. I read something of some dells have a "secret menu " called a a Thermal Control Panel where you can see your fan status and change its speed, you can access this menu by doing this: - Press FN + Shift button This can cause bearing damage, radiator damage if the blades flex too far, or even shatter a plastic fan. 2. Common causes for fans not working, abnormal or loud fan noise, overheating: Fans or air vents that are obstructed If the motor fails the blades will not be able to spin or generate air flow. Visually check the fan if you don’t hear its noise. Do this by lifting the hood and listening carefully. 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