High Pitch Whine after Shutdown - Jeep Wrangler Forum

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Old 12-14-2013, 07:39 PM   #1
Join Date: Dec 2013
Posts: 3
High Pitch Whine after Shutdown

Hello all,
My wife has a 2013 3.6 Oscar Mike. Tonight when we came home, after getting out of the Jeep after turning the engine off, a high pitch whine came from the engine compartment. This was about 60 seconds after turning the engine off.

We have had the Jeep for about 6 months and she says it has started making this noise recently. Any ideas before we take it in? I just know it won't replicate if we take it in to the dealer.

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Old 12-14-2013, 11:19 PM   #2
Lusus_Naturae's Avatar
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Location: OKC, missing WI
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Right after you turned it off until 60 seconds? Or everything is quiet and then a minute later you hear the noise.

2013 JKU Sport, billet, auto, 3.73, LSD, 315/75/16 Duratracs on MB 72, 10A springs, Bushwacker flatties

Sold - 2005 TJ, red, auto, 3.73, 33" Duratracs, 4" lift
Ice storm casualty in 2007 - 2003 TJ, green, auto, 3.73, 33" Duratracs, 4" lift
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Old 12-15-2013, 01:14 AM   #3
Join Date: Dec 2013
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The noise is heard one minute after it has been shut off. The noise sounds air pressure releasing through a very small hole causing a high pitch whine/squeal. It only last for a few seconds...
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Old 12-15-2013, 05:27 AM   #4
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Posts: 203
I've heard what I think is the same sound. I usually hear it while sitting inside the cabin after it's been shut off. I think it is coming from the area of the temp control? Not sure it's the same sound. I assumed it to be normal, just wanted to know what it was.
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Old 12-16-2013, 12:15 PM   #5
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Join Date: Apr 2013
Location: Laurentians, QC, Canada
Posts: 699
I can hear something as well, very low, I have to pay attention, but it sounds like it's repositioning the flaps of the climate control.
2012 Wrangler JK Sport 2dr, man 6 spd, 3.73 diff
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Old 12-16-2013, 12:35 PM   #6
Join Date: Jun 2013
Posts: 191
Yeah my 11 does the same, I figured it was something with the cabin air filter system...
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Old 12-16-2013, 10:50 PM   #7
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Location: Williamson, NY
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Perhaps it's just your supercharger spooling down...

2013 Sport in Commando Green [SOLD]
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