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2014 Ford Expedition making a whirring noise. Almost like a supercharger sound

Posted on 10/9/19 at 8:06 pm
Posted by Napoleon
Kenna
Member since Dec 2007
69088 posts
Posted on 10/9/19 at 8:06 pm
Wife just came home and told me. I took it around the block. No change in performance no obvious exhaust leak.
Runs good just sounds like one of those fake super charger sounds makers is under the hood.
I know it's a common vehicle on the OT, so maybe someone else has dealt with this.

No check engine lights. No change in driving. Just a noise from under the hood.
This post was edited on 10/9/19 at 8:07 pm
Posted by NewIberiaHaircut
Lafayette
Member since May 2013
11558 posts
Posted on 10/9/19 at 8:07 pm to
Check the alternator.
Posted by Tigeralum2008
Yankees Fan
Member since Apr 2012
17138 posts
Posted on 10/9/19 at 8:07 pm to
Did you turn the air conditioner off and see if the noise disappears? If it does then it is your air conditioner compressor clutch. Common issue with those vehicles
Posted by Napoleon
Kenna
Member since Dec 2007
69088 posts
Posted on 10/9/19 at 8:08 pm to
Good call. Didn't think of that. I'll take the serpentine off tomorrow and see. It does sound like alternator bearing.
Posted by halleburton
Member since Dec 2009
1519 posts
Posted on 10/9/19 at 8:08 pm to
AC going out.
Posted by bad93ex
Member since Sep 2018
27202 posts
Posted on 10/9/19 at 8:08 pm to
Time for a F-250, baw!
Posted by Napoleon
Kenna
Member since Dec 2007
69088 posts
Posted on 10/9/19 at 8:13 pm to
That's what she wants. I prefer smaller vehicles.

I'll take the belt off tomorrow and check and see if noise goes away. Looking online it does seem it's likely something on the serpentine.

Either of those things failing wouldn't be bad at all.

Since I work on fridges and fridges use r134a it's nothing to vac and fill a car ac system, though fingers crossed it's the alternator.
Posted by Obtuse1
Westside Bodymore Yo
Member since Sep 2016
25639 posts
Posted on 10/9/19 at 8:15 pm to
Also, check the power steering fluid, though they tend to "whir" more when you are close to full lock.
Posted by Macfly
BR & DS
Member since Jan 2016
8077 posts
Posted on 10/9/19 at 8:17 pm to
If sound/pitch does not change with acceleration or deceleration, it's probably the AC system.
Posted by Napoleon
Kenna
Member since Dec 2007
69088 posts
Posted on 10/9/19 at 8:17 pm to
It made noise without turning the wheel.
Posted by AmosMosesAndTwins
Lake Charles
Member since Apr 2010
17886 posts
Posted on 10/9/19 at 8:25 pm to
It may just be the supercharger.
Posted by Old Sarge
Dean of Admissions, LSU
Member since Jan 2012
55306 posts
Posted on 10/9/19 at 8:27 pm to
Alternator

Tension pulley

Or power steering pump
Posted by FinkyStinger
Georgia
Member since Jan 2009
1862 posts
Posted on 10/9/19 at 8:29 pm to
Idler pulley on the serpentine belt?
Posted by ToothMaker
Member since Feb 2013
33 posts
Posted on 10/9/19 at 8:29 pm to
Idler pulley. Disengage the serpentine belt and spin the pulleys by hand. You should hear the one that’s bad. YouTube is your friend
Posted by Barbellthor
Columbia
Member since Aug 2015
8636 posts
Posted on 10/9/19 at 8:46 pm to
Yet another ford with a problem.
Posted by cajuncarguy
On the road...Again!
Member since Jun 2013
3135 posts
Posted on 10/9/19 at 8:50 pm to
EPAS. No fluid to check
Posted by gobuxgo5
Member since Nov 2012
10028 posts
Posted on 10/9/19 at 9:00 pm to
Crazy people put this kind of money into a non Toyota or Honda. Too much risk for me.
Posted by Obtuse1
Westside Bodymore Yo
Member since Sep 2016
25639 posts
Posted on 10/9/19 at 9:40 pm to
quote:

EPAS.



Are you sure? I could have sworn my next-door neighbors was a 2014 and I changed the oil and several other things for her a couple of times and was certain it had hydraulic steering. Maybe it was a different year or are you thinking about the Explorer, that was during the time they have so many EPAS issues.
Posted by mulletproof
Shambala
Member since Apr 2013
4672 posts
Posted on 10/9/19 at 10:30 pm to
AC compressor pulley bearings.
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