What could the problem be if engine fan is real loud. when i start it its still loud.
Nov 15, 2025 at 7:15 AM
engine cooling fan real loud?
2016 FORD F-150
ROYCAR71
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I meant it is 2016 ford f150 2.7L
Nov 16, 2025 at 12:46 PM
So we are talking about the radiator cooling fans correct? These are electric so they are on high all the time correct? This can be because of a bad engine cylinder head temperature sensor, to help confirm the issue and can use a scanner to see what the value is when the engine is cold, it should be close to the outside temperature. If the valve is high like 150 degrees in the winter time you know the sensor is bad, here is a the location of the sensor in case you need to replace it, and I will email it to you as well. Check out the images (below). Please let us know what happens.
Image (Click to enlarge)
Nov 17, 2025 at 9:05 AM
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Is this same as ect sensor
Nov 17, 2025 at 10:39 PM
Yes, but they call it a cylinder head temperature sensor. Did you get a chance to put a scanner on it to get the reading to confirm the failure?. Also, you can take short video and upload it here so I can see what is going on.
Nov 18, 2025 at 10:24 AM
Update, I found out I had too much Freon in system which tripped high pressure sensor to turn fan full blast now it does not come on. I have to recharge to see if ac will come on.
Nov 19, 2025 at 5:15 PM
Nice!,, yep that will do it. I didn't know you recharged the AC before this started, Thanks for letting us know, we are here to help, please use 2CarPros anytime.
Nov 20, 2025 at 9:16 AM