Prius (Gen 2) :: Low Frequency Noise / Squeal When Turning AC On Or Off


Jul 12, 2010

Have a 2008 with 23,000 miles on it. Recently, I noticed that there is a low-frequency noise (squeal?) that lasts for several seconds when turning the air conditioner on or off.

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Ford 7.3L Power Stroke (1999-2003) :: High Frequency Squeal When RPM Passed 2300 - 2500

Anytime I run the RPM passed 2300-2500 I get this high frequency squeal. I don't seam to lose any performance, but very annoying. Is this the turbo having troubles. It's directly related to the RPM'S. Other that that, the truck runs great....

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Gen 2 Prius :: Too Much Radio Frequency Noise Generated

I have a very long commute, 60 miles each way and 1 hour minimum. I installed a low end Cobra 40 channel CB radio to pass the time and to get traffic information. The antenna was purchased and trimmed to my car from a communication store which carries CB radios. My problem is, there is so much Radio Frequency noise generated when the Prius is put into drive (not even driven and without the gasoline motor starting) that it is picked up by the antenna and makes tons of static on the radio. The radio is virtually useless.

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Prius C :: High Frequency Sound Noise During EV Mode

Have hissing sound from prius c during ev mode? Mine has it, like whistling/ high frequency sound.....

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Prius (2010-12) :: Check Engine Light Just Lit Up / High Frequency Noise When Motor Stopped

My Prius just reached 200000 km this week. I bought it at 180000 km 2 years ago, I don't drive it that much simply because I work from home.

Today, a sunny day, 0 degrees, the check engine just lit-up. I opened the hood and checked fluid levels, all OK. I started it and listened to the engine, running as usual. However, when the motor stopped (hybrid ON), I can hear a high frequency noise. I don't remember hearing this noise, but I don't think I ever opened the hood with the engine Off but powered On.

How can I get the check engine code ? I assume I need a connector, right ?

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Prius (Gen 2) :: Brake Squeal Noise When Driving / Go Away After A While

Experienced a brake squeal noise on their car when they first drive it? After a while it seems to go away? The sound is similar to a low brake indicator squeal but not as loud. I hear it on my drivers front wheel.

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Golf V R32 :: Brakes Started To Squeal Loud When Come To A Turning Stop

My brakes started to squeal LOUD when I come to a turning stop. Although I don't hear it when I'm stopping going straight, it just makes a high pitch noise when I'm turning into a stop. Last time I went to the dealer, they blamed it on the brake dust... I only drove 300 miles since the last car wash.. it can't it the reason.

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Steering - Acura - Integra :: 1992 - Occasional Squeal When Turning

I'm the original owner of a '92 Integra (~130K miles) and I have an intermittent squeal when turning, which sounds like rubber against metal in the front of the car (maybe even from the steering wheel). It happens only when turning, and only at certain positions of the steering wheel during any particular occurrence. It is speed independent but velocity dependent: it can happen on an on- or off-ramp at 50mph or turning into my driveway at <10mph, and if I move the wheel a little either way it will go away but return when I move the steering wheel back to the "squeal" position. It might happen one day but not the next day. I actually was able to reproduce this for my mechanic, but they found nothing and said the front end looks good. The tie rods were replaced at ~100K miles, and the engine mounts were replaced at ~120K miles; I got new tires at ~110K miles; the squeal doesn't seem to correspond with any of these repairs/replacements. What is going on that could be checked out.

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Celica :: 1997 - Belt Squeal Sound On Turning Steering Wheel

We recently purchased our 17 year old son a 97 celica, Problem, when he goes out in the morning to start it, it sounds like a is belt squealing really really bad. We changed the tensioner and it stopped for about a week and then returned. We sprayed the belt with belt dressing to determine which belt it was, one at a time, it was the one that goes to the alternator, so we put a new belt on it, the sound stopped this time for a few days and returned.

This happens whether it is wet or dry, but seems to be worse when dry. The sound lasts for a few minutes and usually goes away. I thought it sounded (the actual sound) like power steering. The sound does get worse when we turn the steering wheel, then when the steering wheel is straightened it goes away. My son said now it periodically will do it will drive for no apparent reason and go away.

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Lexus GX 2004-09 :: Slight Squeal While Steering Vehicle To Limit Of Its Turning Radius

Slight squeal while steering the vehicle to the limit of it's turning radius? I've just begun to notice this recently on my 07 GX... mainly when I'm pulling into a parking spot at slow speeds. Is this normal or should I have it checked out at Lexus dealer?

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Golf V R32 :: Speaker Has Vibration / Rattle Noise With Certain Frequency

I need some speaker upgrade recommendations that'll fit into the door cards - specifically the subwoofers - I've replaced an OEM speaker in the driver side once already and it's doing the same thing as before it has a weird vibration/rattle noise with certain freqs. It may very well be the way it's sitting in there but I doubt it.

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Passat (B5) :: 2003 - Low Frequency Driveline Noise Started At About 35 Mph

I have been recently working on a 2003 1.8T fwd Passat that I have owned since new. I recently changed the front rotors, pads and CV axles. At low speed everything is great. No vibrations or unusual harshness. Starting at about 35 mph a low frequency driveline noise starts from the driver side and starts to get drummed out by engine noise above 60 mph. The noise is not very noticeable from the passengers seat. Initially I suspected a tire, but I swapped tires front to back and the noise didn't change. I have tried loading and unloading the front tires in 45-50 mph s-turns and the noise doesn't change.( I was thinking wheel bearings). I put the car back up on stands and tried hand spinning the wheels. No unusual noise was present. I have not found any clearance issues where there might be something rubbing. I got the axles from Raxles and am at a loss. Could this be a wheel bearing or a bad CV joint? How can I tell?

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Prius (Gen 2) :: 2006 - Transmission Oil Change Frequency

I am looking at a 2006 toyota prius with 88,on it, and it looks like the transmission oil has not been changed on it yet. Recommendation is that transmission oil be changed every 60,000 miles. Would it be "safe" to buy this car considering everything else checks out with a local mechanic? The car is very very clean, almost new tires. Engine oil was changed regularly.

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Corolla / Matrix 2009-13 :: Low Frequency Noise Inside Car - LED Headlights

I bought these lights on ebay. It was direct replacement for stock and it has Fan and ballast built in. Light is good and all good but im hearing some low frequency humming noise when im inside car and waiting in any traffic light.

I also opened the hood and tested it is there but less. Im hearing more in cabin. When i turn off the lights its gone. Is it the fan ? How to control it.

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Renault - Clio :: High Frequency Noise After Few Seconds When Start The Car

When I start the car, after a few seconds starts a high frequency noise. The noise is located in middle right low part of the car. Here is the recording of the sound: [URL] ....

The noise gets stronger after 14 sec of the video- when i get closer with recorder,.. And the image of the possible location: [URL] .... The image is near fuel tank, but doubt it has to do with the sound.

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Silverado :: 2004 - Low Frequency Grinding Noise When Changing AC Settings

My '04 Silverado makes a weird noise when switching it on or off. It also makes the noise when switching between floor and dash vents. Best way to describe it is a low frequency grinding sound. I'm not talking about the clicking sound that seems so popular with this model truck. It has that too, but this is something different. It does it every time I change a setting on the AC. It does not occur when changing from cold to hot.

My truck also has the issue where it will blow cold at first then blow hot air just on Driver side. Turning the truck off then on seems to fix that.

I've googled around but don't know enough about HVAC systems to know exactly what to search forand how to fix it?

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Prius V :: High Frequency Vibration At Highway Speed?

My Prius v has 1300 miles. I didn't notice at first but now I notice a constant high frequency vibration in the car, especially at highway speeds. Took car to a tire shop and had tires dynamically balanced, same problem. I think it must be the toyo low profile tires or its in the drive train and just inherent to the hybrid system. Seems to be the same whether in eco mode or ev. Vibration is the same on smooth or rough roads. Dealer service manager says he is not aware of any problems. Suggests bring car in for a test drive and compare with another new one.

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Santa Fe (CM - 2007-12) :: Dash Lights Flickering / Low Frequency Noise When Engine Rev

I have a very strange electrical issue and CarMax is unable to find the source.

Detail of issue: It started 2 months ago before i left the country i took my car in to get the dreaded valve gasket cover and alternator and after taking the car back i left for Europe for 2 months. I was informed after 2 weeks that my car battery died and had to be jumped.

When I returned home I notice the following issues

1) Alternator Whine in my Sound System
2) Low frequency noise synchronized with engine rev that was triggering the sub low end making a very distinct wooom.
3) Sudden Power Loss for my secondary AMP. The base would cut on /off.
4) Light flicker in my Dashboard (only the GEAR LED) and the entire climate LCD. flicker also synchronized with engine rev.
5) POWER drop on the air con fans while breaking (the RPM would drop)
6) I saw the headlights where also flickering at the same frequency with the LCD and dash led a very noticeable flicker.
7) my headlights would dim when breaking.
8) My Car would start a bit slower (not as instant as before).

Initially i thought it was the my secondary amp that was causing the issue. I took the car to a great Audio shop and they said the On board Hyundai amp was sending weird signals. They said it was broken and i should have it replaced. I told them to disconnect the AMP from the car and leave it disconnected until i take the car back to Carmax.

I was hoping that was the cause ... it wasn't the lights keep flickering (at a far lower intensity probably due to the lower power consumption overall).

What could cause all of this. Alternator I had the alternator replaced two weeks ago (apparently it was broken). I changed 3 alternators in this car. Valve Gasket, Valve Gasket(they were retarded and didn't listen to what i told them) and broken.

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Golf IV / Jetta IV :: 1999 - Higher Frequency / Pitch Noise After Trying To Drift

I let my friend drive my 1999.5 2.0L Jetta (Automatic). He attempted a drift around a cultist, when he started the drift the car made it's usual noise. But after the sharp turn and acceleration, the car made a higher pitch noise. It was definitely noticeable. When driving back home the car performed all the same, accelerated and turned as per usual. But the noise still remains. I don't know what is causing it to make the noise, maybe the Transmission? I'm not too knowledgeable when it comes to cars so that's why I came here.

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Prius Plug-in 2012-15 :: High Frequency Pitch Sound

When I test drive the PIP, I kept hearing a high frequency pitch noise whenever the car was accelerating. It almost sounds like when you lightly touch the trigger on a cordless drill. Sales guy and my wife couldn't hear it, but I do have extremely sensitive hearing.

A quick search didn't reveal anything, so I am wondering if this is a problem, or maybe part of the pedestrian warning system (although it happens at higher speeds as well).

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Prius (2004-09) :: What Is The Frequency For Changing Belts, Hoses And Timing Belt

I have a 2007 Gen II with 133,000 miles and am using Amsoil synthetic oil and an extended life filter, changing oil every 10,000 miles. What is the frequency for changing belts, hoses, and timing belt? Other than a faulty latch on the rear lid, I have experienced ZERO problems with the car and would like to keep it so.

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