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Old 05-21-2018, 07:37 AM   #1
Stoof
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Default F-150 mechanical question

New to me truck. 2014 6.2, 4X4. 61K. Now this may be completely normal but that is why I am asking. I have had the truck for going on a month now. Since the hot weather has kicked in I have noticed that when the truck sits out in the sun for a while, when I start it up there is a new noise. It doesn't kick in right away. It may take a minute. It sounds like an old compressor kicking on. The truck gets considerably louder. It seems that once the AC has cooled the interior down and the engine gets up to operating temp it kicks off. It does not come back until the truck has sat for a while. The last two days have been much more mild and the old compressor noise has not happened. When I say old compressor, it doesn't sound rough. Just louder. Normal? Vacuum leak?
The AC blows cold and strong like it should.

Thanks,
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Old 05-21-2018, 08:22 AM   #2
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Fan clutch?
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Old 05-21-2018, 08:23 AM   #3
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Fan clutch?
This.
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Old 05-21-2018, 08:25 AM   #4
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Fan clutch?
I don't know? You tell me. I am a small engines guy. Everything with more than one cylinder is above my pay grade.
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Old 05-21-2018, 08:26 AM   #5
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Can y'all elaborate a little for me?
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Old 05-21-2018, 08:31 AM   #6
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The fan clutch engages at a pre determined temp. When it does, it engages the fan blades to pull air through the condenser and radiator. When this happens, the blades made more noise. When it cools down the noise goes away until it needs to pull more air through.
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Old 05-21-2018, 08:34 AM   #7
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The fan clutch engages at a pre determined temp. When it does, it engages the fan blades to pull air through the condenser and radiator. When this happens, the blades made more noise. When it cools down the noise goes away until it needs to pull more air through.
Thanks cap'n. I just googlered it. Is there a way to confirm this without ripping it apart. It looks like a relatively easy, driveway replacement.
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Old 05-21-2018, 08:43 AM   #8
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My brothers F150 did the same thing. His wife drove it for a week and kept saying it was really loud etc so he drove it and seemed normal but she swore something was wrong so he took it to the shop to get it checked out. Apparently from what he was told is that depending upon the engine or something that there can be a normal clutch and a performance clutch on the vehicle. The performance clutch is stronger and louder. with yours having the 6.2 i would suspect it might have a larger/performance clutch. this is what he was told and i make no claims that it is true or i have a clue what im talking about at any time
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Old 05-21-2018, 08:44 AM   #9
HillCoBowHunter
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I had something similar a couple of months ago but the noise wouldn't go away once it kicked on. Mine ended up being a leak in my radiator hose. I went ahead and replaced all of the hoses (Pretty easy job and I'm no mechanic) and I haven't had any issues since.
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Old 05-21-2018, 08:45 AM   #10
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This is not my truck but the same issue.
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Old 05-21-2018, 08:52 AM   #11
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You have electric fans. One of my co workers drove his 2015 F-150 through deep water during Harvey, and noticed after that, his truck would get really loud in the same conditions you are talking about.

He took it in. Turned out the main radiator fan fuse blew, and so the truck was using an aux (backup) fan, which was considerably louder, to cool the truck down. Once they replaced the fuse, the sound stopped.

They may have replaced the fan as well, I don't remember.
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Old 05-21-2018, 09:05 AM   #12
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Well, this gives me a few things to look over. The interwebs seems 50/50 on normal and issue. AC pressure switches come up also.
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Old 05-21-2018, 09:10 AM   #13
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Can you post a video of you making the sound it makes? Is it a rrrrrruuuuuMMMMMMMM sound, or vvvrvrvrvrvrvrVROOOOOM sound, or rrrrrvvrrboooomVtrbommaaba sound?
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Old 05-21-2018, 09:13 AM   #14
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Quote:
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Can you post a video of you making the sound it makes? Is it a rrrrrruuuuuMMMMMMMM sound, or vvvrvrvrvrvrvrVROOOOOM sound, or rrrrrvvrrboooomVtrbommaaba sound?
RRRRRRRRRRRRRRRRMMMMMMMMMMMMMMMM. I ain't desperate enough to make that kind of video yet.
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Old 05-21-2018, 09:16 AM   #15
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It's normal non issue. Mine does the same in the hotter months
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Old 05-21-2018, 09:21 AM   #16
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Quote:
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It's normal non issue. Mine does the same in the hotter months

The more I google and read up on the ford forums the more it sounds like it is normal.
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Old 05-21-2018, 09:23 AM   #17
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Quote:
Originally Posted by Stoof View Post
The more I google and read up on the ford forums the more it sounds like it is normal.
Mine does it as well during the high heat days. I remember thinking the same thing first time I heard it.
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Old 05-21-2018, 09:47 AM   #18
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There is a good chance that when you said it didn't do it again until it sat for a while, that when driving your just not hearing it. Sometimes I can hear the clutch kicking in and sometimes I can't when driving.
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Old 05-21-2018, 09:56 AM   #19
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My 14 f150 does the same thing. Mine is the 5.0 not the 6.2
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Old 05-21-2018, 10:21 AM   #20
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That video appeared to be in a closed garage
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Old 05-21-2018, 12:32 PM   #21
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I have a '14 F150 5.0. Mine does the same thing. I was told to check your antifreeze levels. I noticed if my levels are good then I don't hear it as much.
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Old 05-21-2018, 12:41 PM   #22
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My 2014 has always done it warmer months. It's so loud when it happens that I turn my truck off in drive-thru's so people in front of me can order. Rediculous
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Old 05-21-2018, 12:48 PM   #23
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Quote:
Originally Posted by Dents View Post
My 14 f150 does the same thing. Mine is the 5.0 not the 6.2
X2, my 15 does it. Easiest fix would be to get a dodge, then you don't have to worry about it making any noise after turning the key
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Old 05-21-2018, 12:49 PM   #24
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Quote:
Originally Posted by txcooker10 View Post
I have a '14 F150 5.0. Mine does the same thing. I was told to check your antifreeze levels. I noticed if my levels are good then I don't hear it as much.
Good to know, thanks
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Old 05-21-2018, 01:00 PM   #25
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I have a 2013 and was concerned when I first heard how loud the fan was and went through the same process you are and was told it was normal.
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Old 05-21-2018, 02:16 PM   #26
Stoof
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Thanks for the feedback y'all. It's not bad when your in the truck, windows up and music playing. But outside it's loud!
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Old 05-21-2018, 02:31 PM   #27
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It’s a ford they make lots diff noises but always run lol
I love my 2013
Better than making no noise at all like GM or Dodge
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Old 05-21-2018, 02:48 PM   #28
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My 2013 F150 did the same thing for the first time last Summer. I was concerned also since it had never done it for the first three years of owning it. It did it during the peak of the summer, but it has not done it since. Basically what I found through my research was the following response "Would you rather have a loud fan cooling down your engine, or for your truck to overheat?"
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Old 05-21-2018, 03:12 PM   #29
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Quote:
Originally Posted by Stoof View Post
Thanks for the feedback y'all. It's not bad when your in the truck, windows up and music playing. But outside it's loud!
Oh yeah! Sounds like a freaking airplane propeller!
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