radiator fan running high


Asked by Feb 10, 2017 at 08:06 PM about the 2012 Ford F-150

Question type: Maintenance & Repair

21 Answers


Is the engine hot? If so the fan is doing its job.


no, the temperature is normal


The fans should come on at preset temperature and then cycle off once the fans cool things down a bit. Are the fans coming on and off or do they stay on all the time?

4 of 4 people found this helpful.

only 50,000 miles on it. also the heater is blowing cold air.

3 of 3 people found this helpful.

the fan gets loud after about 15 minutes of driving. it has never done this before.

4 of 4 people found this helpful.

If you have a clutch fan the clutch is probably bad. The heater problem may be a bad thermostat or air in the system.


both symtoms seemed to be linked because they began at the same time.


If the engine is running hot the fan will come on more. Maybe you should service the cooling system.


Is the fan electric? If so it could be a defective pressure switch on the AC compressor.

2 of 2 people found this helpful.

I have a f- 150 2013. Both cooling fans run all the time after 160 degrees. They changed the water pump. Then the shit started. Before that they never kicked on

6 of 6 people found this helpful.

I have the same issue. I HAVE to turn my car off to go through drivethrus. Its embarassingly loud, my wife says she can hear me coming. Father in law even commented on it. Didn't do this in the beginning but now that fan runs so hard. Took it to the dealership. They say some wire on the fan burnt out.

1 of 1 people found this helpful.

I have the same issue as well. I have a 2012 Ford F150 Fx4. There is a fan noise coming from my engine compartment that is really loud. The fan kicks on and off. Also when I am stopped or moving really slow my truck is blowing cold air even though I have the theromstat set on heat. Spectrum_7968 did you ever figure out what was wrong with your truck?

5 of 5 people found this helpful.

Sams issue. 2013 fx4. Fan running fast and when the heat is on cold air. Started yesterday. Any answers?

3 of 3 people found this helpful.

I think we have narrowed it down to a coolant leak but we haven’t taken it to the shop to find the leak yet. But we are having to add coolant every week to the truck.

have been having the same problem with 2011 F-150 Platinum. Mechanic said coolant was low. topped off and reset the system. So far so good. Did not identify any leak but will have to keep an eye on it.


I have 2012 F150 XLT just had the same problem start happening. Heater will not blow hot air unless I rev up to 3000 RPM or so at stop light. Goes back to blowing cold air when going in 30-40 MPH traffic. Some loud auxiliary fan is coming on. Will have to check coolant and system. Thanks. I will get back here about this.

2 of 2 people found this helpful.

Humm Yea added 1 3/4 gallons of 50/50 antifreeze into the plastic coolant reservoir. Heater works, did not hear the loud auxiliary fan on the way to work. BTW I am found out in old school again. The only way to add water/antifreeze now is through the plastic coolant reservoir? OK I guess. Now to find the leak.

I’ve got a 2012 FX4 5.0, with a performance Tune, but the last few days I’ve noticed my coolant temp getting in the 230° range and a fan kicking on. Then today while driving home the temps reached up to 240°, going in tomorrow to get the coolant system check. Hopefully it solves the problem.

Exact thing happening with my 2013 150. Fan kicks on, won’t blow hot when stopped or driving at a low speed. Anyone have a solid answer?

I changed my thermostat and about a week later the cooling fan started coming on intermittently at high speed. This is in 0 deg weather. One post talked about resetting the system. More about that please.

I am having the same issue, the cooling fan comes on and stays on at high speed. I took it to the dealership and had it serviced and they said it was coming on because I was running the defrost. The temperature has been In the 20s all week, but now is a Saturday and it is 70° outside and now my AC does not blow cold air. Any ideas?

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