What causes this "noise?" . . .

2501 Views 12 Replies 13 Participants Last post by ChallyTatum, Aug 21, 2020

twomten

Discussion Starter · Apr 14, 2011

I've noticed this several times while sitting in the car (2010 R/T) after it was shut off.

So here's what happens . . . about 5 minutes after shutting it off, what sounds like a small motor in the dash runs for about 5 seconds. Following a short pause the same sound repeats itself 2 times. After each whirring sound ends, there is a another sound like a vent door closing or something like that. This is all pretty quiet so it probably would not be heard over a radio or a conversation.

(In addition, it has also occurred when getting into the car, closing he door and sitting for a few minutes without starting it up.)

Thanks in advance for any assistance/ideas . . .

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1 - 13 of 13 Posts

BigBear

· #2 · Apr 14, 2011

Noticed that too, no idea what it is though

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brampton builder

· #3 · Apr 15, 2011

sounds like the HVAC doors calibrating themselves .

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High Rise Torker

· #4 · Apr 15, 2011

Gremlins waiting for you to leave.

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BADHEMI

· #5 · Apr 15, 2011

sounds like the HVAC doors calibrating themselves

yep,its the blend door opening or closing, ive watched the small white arm moving under dash...not sure if its normal? but mine does it too...

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robroy

· #6 · Apr 15, 2011

Nothing to worry about I have it too. Sometimes I wait to hear it. It's like a signal concluding a fine day of driving, a sign of a job well done.

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theoneanarbr

· #7 · Apr 15, 2011

Someone has to ask....What in the crap are you doing sitting in your car for 5 mins after you turn it off?

Seriously though i've heard it to and assumed it was normal lol.

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08blackrt

· #8 · Apr 16, 2011

I think part of it is something that keeps the hard drive in the stereo from getting too cold. It seems like it happens more when the temp is cold out than it does when it's warmer.

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DBDLIVES

· #9 · Apr 16, 2011

Its just the A/C (HVAC) calibrating the blend door. All the LX/LC cars do it. Mine will actually do it once when I hit the unlock button after an all night sit too. Which is wierd because my other LX/LC cars never did that. I hit the unlock button in the morning and hear a CLUNK from my A/C housing. Doenst seem to be hurting anything so whatever. LOL. Anyway its normal for the door to cycle after five minutes. Nothing to worry about.

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Ray bonilla

· #10 · Aug 20, 2020

It doesn't seem normal and never did that before I think it is a bad relay

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MEKrunner

· #11 · Aug 21, 2020

Ray bonilla said:
It doesn't seem normal and never did that before I think it is a bad relay

How long have you had your car? It's normal if you have been running the air conditioning. If I'm inside my car for more than a few minutes after shutting it off, it sounds like it's haunted.

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Pioneer4x4

· #12 · Aug 21, 2020

MEKrunner said:
How long have you had your car? It's normal if you have been running the air conditioning. If I'm inside my car for more than a few minutes after shutting it off, it sounds like it's haunted.

ignore it, 1 post after a 9 year old post...

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Reactions: 1

ChallyTatum

· #13 · Aug 21, 2020

Ray bonilla said:
It doesn't seem normal and never did that before I think it is a bad relay

Just a heads-up...avoid responding to very old posts and as for relays...they are in the fuse boxes (there is one under the hood and one in the trunk)....not under the dash.

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