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noise under the hood

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Old 12-08-2015, 02:12 PM   #1
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Default noise under the hood

started getting what sounds like a high speed fan noise when i am idling...intermittent, of course...any ideas? i'm not a mechanic...

2013 w/ 63k 8 cyl

Last edited by just plain bill; 12-08-2015 at 02:17 PM.
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Old 12-08-2015, 07:34 PM   #2
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Sound like the radiator fan running. Sounds normal to me.
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Old 12-08-2015, 08:43 PM   #3
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why would it suddenly start doing this? it's not summer here, obviously. in fact it started on an afternoon at 50 degrees...kinda freaks me out, lol...
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Old 12-08-2015, 08:47 PM   #4
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Did you just get done towing? How about pulling off the interstate? Running your AC?

Lots of reasons it could be doing it.
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Old 12-08-2015, 10:26 PM   #5
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Defrost on?
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Old 12-09-2015, 12:01 AM   #6
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AC could have a restriction causing high side pressures to spike and then the fan kicks on super mode for like 3-5 seconds bringing pressures back down.
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Old 12-09-2015, 04:58 AM   #7
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If your climate control is set on auto, it will blow air through all vents to reach your temp setting, including defrost which turns the fan on.
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Old 12-09-2015, 08:56 AM   #8
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i am doing nothing abnormal or different from how i've been driving for 63K. it just started doing this in the last few days.
also had a scorched valve at about 58K, which was under warranty...
already looking at going back to dodge ram...
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Old 12-09-2015, 10:13 AM   #9
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I wonder if they did any updates to your software when it was in for warranty work,

You could also check the fan blades to make sure none of them are damaged
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Old 12-09-2015, 11:54 AM   #10
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Quote:
Originally Posted by just plain bill View Post
i am doing nothing abnormal or different from how i've been driving for 63K. it just started doing this in the last few days.
also had a scorched valve at about 58K, which was under warranty...
already looking at going back to dodge ram...
EEEWWWW....

When did they do the work?

Most trucks have experienced a louder fan noise after having their truck in for service. The dealership updates the truck and changes the fans run time/speed.
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