Prius (2010-12) :: Whirring Or Buzzing Noise After Shutdown
Apr 11, 2011
I have a 2010 IV and after driving for an extended period and then shutting the car off I get a loud noise about a minute or a little more after shutdown. The best I can describe it is that it sounds like someone is dropping a 3 pound dead chicken from about 10 feet up onto my hood. It is consistent and is not any of the whirring or buzzing noises I normally hear. I also have a 2009 Touring and have never heard anything like this.
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This is strange. Twice in the past week I have gone in my garage at night, and my Prius'10 is make a buzzing whirring noise. Without touching it ... it's just sitting there making a buzzing noise. This is hours after using the car.
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My girlfriend just picked up a 2007 Prius Touring, 78,000 miles, original owner. It was a private sale and I took a look at it for her. I'm just learning about the Prius and stuff to look for, but everything looked good on it to me. After purchasing it she noticed a noise coming from the drivers side dash. I searched here and saw that dash rattles are common, but this sounds more like an electric buzzing/whirring noise. The duration of the noise is always about 2 to 3 seconds in length, then it stops. There doesn't seem to be any common factor for when it occurs. Is there anything electric on the drives side dash (far left side, closest to the window), that might be making this noise? It's not super loud, you can't hear it if the radio is on.
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I have a concern about not hearing the whirring sound after shutdown anymore. I know that the sound comes from a small electric-pump that pumps 3 liters of coolant into a thermal container (to keep it hot) everytime I turn the hybrid system power OFF. When the power is turned back ON, the coolant is pumped back into the engine.
I've noticed that after I got an oil change and tire rotation at Pep Boys the sound is no longer there after shutdown or power up. Then after a couple of days I took the car to the dealer to fix the tire rotation (because Pep Boys didn't do a good job at rotating the tires, there was a woo woo woo sound while driving) and the dealer also did a multi-point check, but they didn't say anything was wrong with the car.
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I have a 2011 f250 6.7, I park under my house everyday, so I am used to weird noises coming from my truck when I shut it off, but now that I just did a dpf and egr delete, and tuner, I noticed that my tuner doesn't shut down until the noise under the hood stops, which takes a few minutes to stop, I use to hear the air valve on the egr cooler shut when every got quiet, but I don't remember it lasting this long, any one else have a H&S mini max and it doesn't shut down right away? the place where I bought my mini maxx said it should shut down as soon as your head lights go out, but that's not the case, the headlights go out long before this noise stops and the tuner powers off
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2 weeks ago, I purchased a 2015 F250 6.2 with 16K miles. Upon bringing her home, I noticed that there is a buzzing noise coming from the engine compartment after I shut down the motor which lasts approximately one minute (give or take). Since the truck is still under factory warranty, I figure I'll take it to the local dealership, but I'm wondering with the 6.2 has had the same issue and what the issue could possibly be.
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My new 2013 prius c engine makes buzzing, whirring, clicking noises, especially when speeding up or slowing down. Why?
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I have a 1993 E350 Econoline-based RV. The blower motor intermittently makes a horrible whirring/buzzing sound, usually if on position 3 or 4 (high). Doesn't stop until I turn the HVAC to Off. The blower motor vibrates quite a bit while making this noise (verified with my hand). The problem occurs even if the engine isn't running. This started a few years ago, and has simply gotten worse.
Since it runs OK at the lower speeds (until the problems start with the higher speeds), I think that means I can rule out something simple like debris? Also, when the engine is under load (climbing hills, etc.), the blower fan cuts out. Could that be a resistor problem, or something else?
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For about a year and a half I have had an "undiagnosable" noise that started as an intermittent metallic buzzing and has evolved into a constant whirring/grinding noise. The tempo of the noise increases when accelerating; occurs at all speeds and at idle. People say they know when I am approaching they can hear my car from about two blocks away.
My regular 20 year mechanic checked transmission, replaced timing belt (at 65K; now have about 74K); all idler pulleys; checked alternator; He thinks is is the AC drive pulley on the compressor; Hyundai dealership did not know what it is; laymen have suggested is is a power steering pump, reservoir issue. Power steering fluid level is fine. Otherwise, the performance of the car is fine.
Engine is 3.5L V6; 2004, about 74+K
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For about a year and a half I have had an "undiagnosable" noise that started as an intermittent metallic buzzing and has evolved into a constant whirring/grinding noise. The tempo of the noise increases when accelerating; occurs at all speeds and at idle. People say they know when I am approaching they can hear my car from about two blocks away. My regular 20 year mechanic checked transmission, replaced timing belt (at 65K; now have about 74K); all idler pulleys; checked alternator; He thinks is is the AC drive pulley on the compressor; Hyundai dealership did not know what it is; laymen have suggested is is a power steering pump, reservoir issue. Power steering fluid level is fine. Otherwise, the performance of the car is fine.
Engine is 3.5L V6; 2004, about 74+K
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I remember that my 2005 Prius had a short whirring noise when I shut it off, as some coolant fluid was moved around.
But my 2010 Prius has been pretty quiet at shut-down, until recently (has it always been there, or now that it's cold weather?) I noticed there's a very faint whirring noise coming from the engine compartment at shut-down. It lasts for quite a while -- almost a minute, then stops.
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I have had my certified 2010 Prius II, not two because it is a 2010 and 2010 used uppercase roman numerals for model designation, with 82000 miles about 3 months and sometimes when I apply the brakes I hear a high pitched whirring noise. I think the closest thing to compare it to would be a skill saw but not that loud.
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My 2010 Prius V just past the 24000km mark. I have a buzzing noise coming from the engine bay during startup. It happens when the interior fan is on. You can hear it clearly after you start the car, during the silence of the "boot up", before the ICE kicks in. I can't be sure if it continues to buzz after that because the sound of the ICE drowns it out. However, If I shut off the fan during the boot up, the buzz disappears. Finally, if I leave the fan off and start the car, there is no buzz.
During a recent oil change, a hybrid technician claims that this is normal. It used to happen infrequently but now it is consistent, so if it was normal, I should have heard it when the car was new.
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2010 w/ 16k miles
5 hrs after shutdown i head something running under the car,, was louder under the car vs listening thru the inside,,, sounded like a fuel pump or small fan.
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Since the weather has dropped a little I was wondering if it's normal that the car sitting on in the drive way, on, would idle up a little just before shut down. I mean shutdown to use the battery not shut down turn the car off. It idles fine for the warm up stage then just before it shuts down to be available for ev mode it spins up a little.
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When I'm driving with Windows up and audio off I can hear this hollow road noise, static buzzing sound from my back right side.
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I have a Gen III Prius 2010 with about 50k on it. I've noticed over the past month that when the ICE shuts down at a stoplight, the car will surge forward a bit. If my foot isn't on the brake really hard, it will translate to the car actually moving forward until the ICE is totally off. If my foot is on the brake hard, you can feel it push against the brakes, and then the car settles back in place. It doesn't happen every time, so it still takes me by surprise.
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My Prius is having a problem during cold start. When I bought it, the cold start was very energetic with a high rev tone then gradually regulate to a normal pace and petrol engine shuts down. But about 4 months I noticed the tone of the cold start has changed, it starts with a weak and low engine rev and delays to turn off the engine. Today it took about 10 mins to power off the engine. Got 2 months I changed my 12V battery (Bosch now), thought that these symptoms was to notify that battery is failing. But the problem is persistent despite I put new battery..
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Yesterday my 2008 Prius with 95,000+ developed a new noise after turning it off and it has me a bit worried. I took an audio sample? Last night it occurred for like 5-10 minutes. Now today I went to turn it on and before I even pressed the power button it made another noise that I've never heard before which I didn't get on audio. It turned on fine, I let it run for a few minutes and then shut it off and the noise I got on audio occurred for several minutes. The noise comes from the driver's side by the electric motor. The clip should play in iTunes or Winamp, took it on my iPhone so its kind of low in volume.
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I'm currently using a 2010 Impala as a loaner. I had bought a 2005 Hyundai Santa Fe from a dealer and 5 days later the engine blew. I've been using loaners from them for over a month until the engine is replaced or I decide on a different car. They have a junkyard engine on the floor, but they only have one mechanic so things don't get done on time. This Impala has 107K.
I did the carfax thing and it was a rental for the first 2 years, then owned privately. Occasionally the ABS light and t/c light come on but I'm convinced it's a chafed wire because it seems to only come on when I turn the steering wheel a certain way. They had checked the codes and came up with nothing 'wrong', which makes sense to me... it seems like either a crappy connection or chafing or something. This will need to be addressed and fixed before I sign anything but....
My dilemma right now is this: The roads are currently snow packed. If I punch the gas pedal from a dead stop there is sometimes a slight hesitation and a whirring sound, oddly enough it sounds a lot like a windshield washer pump. The car runs flawlessly otherwise. I asked a friend who also owns a 2010 Impala and he says he's never heard such a noise. I don't see how anyone could miss it. If I disable the t/c, there is no noise.
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On my 2010 Prius (~75,000 miles): The whirring electric motor sound that one hears when just entering the vehicle (even before starting the vehicle) seems to be getting more frequent (and maybe louder).
I used to notice it only when getting in the car and before or just after pushing in the start button. But now I notice it driving around the neighborhood, even at moderate speeds. Is this a sign of some impending failure?
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