Prius (2004-09) :: High Pitch Squeak / Whistle While Accelerating And Braking
Jun 16, 2011
My 2007 Prius Touring creates high pitch Squeak/Whistle sound while accelerating and braking, But if I put the car on neutral then the sound completely goes away. I have all the holes covered on the both side mirrors and this still occurs. The sound is constant for as long as I accelerate and Brake and the intensity varies with how hard I accelerate or brake, It also does that during regen braking when I leave the accelerator.
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My 2007 Prius Touring creates high pitch Squeak/Whistle sound while accelerating and braking, But if I put the car on neutral then the sound completely goes away. I have all the holes covered on the both side mirrors and this still occurs. The sound is constant for as long as I accelerate and Brake and the intensity varies with how hard I accelerate or brake, It also does that during regen braking when I leave the accelerator. What could be wrong?
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My girlfriend has a 2001 Ford Escape 3L, 6cyl. When accelerating there is a loud high pitch whistle/whirling sound. The sound varies with the amount of throttle you give it. More throttle = louder whine. Doesn't seem to do it when idling or coasting. What that could be? I'm about to remove the belt and take a look at the drive belt tensioner and other pulleys.
Just checked pulleys and tensioner and the tensioner seems fine, a/c pulley spins smooth and free no play, alternator spins smooth no play. The belt needs to be replaced. I wouldn't think this would cause such a load whistle under acceleration. I would expect it to do it all the time if it was the belt. I'm looking at the water pump pulley and belt too and they seem ok as well.
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My 2003 Tacoma Pre-Runner V6 has started whistling at nearly a constant pitch which stops only when braking or after it has sat (not-running) for along period (hours). The whistle starts after the engine has been running for some time (10min +). I have been able to narrow down the whistle to the drivers side of the engine compartment but not any part in particular. I have checked the vacuum hose connected to the brake booster but is appears to be okay based on visual inspection. I have also briefly disconnected the vacuum hose (while pinching it shut) from the brake booster while the engine was running but the whistle persisted. When I stop the engine the whistle persists for about 20seconds before slowly fading and with my head under the hood I have heard a faint psst sound after it dies out. I have had not problems braking but do not want to start having braking issues. Any thoughts on troubleshooting this whistle?
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During around town driving I am experiencing a faint high pitch whine when braking. This sound is not mechanical, but more electrical coming from the dash-engine area. It is very noticeable when slowing between 40 mph to 20mph.
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Recently upgraded from an 05 Prius to a 13 Persona Prius. Loving it! The 13 was used and it had about 17k miles. What I have noticed, and still learning all the new stuff on this gen 3, but while testing out power mode driving in town, occasionally I will get a high pitch whistle while accelerating after its reached maybe 5mph.
The high pitch sound lasts only a few seconds and if I take my foot off accelerator it immediately stops. Sometimes it does it again when I tap the accelerator again but stops after just a couple of seconds and speeds are up past maybe 15mph.
Weird? Never heard anything like on my 05 ever.
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My Civic started to make high pitch noise when turning right or left, and also when accelerating. It makes more noise when I keep the wheels turning but ceases the noise when I let the handle go and go straight. When accelerating, it ceases the noise as it reaches 30 mph or so. It has got 93000 miles on it. It started the noise about 10 months ago and I feel like it increased the noise over the time. I don't drive everyday and I try to drive my wife's Prius when I drive since it has better gas milage. But this noise is quite annoying and wonder what it is.
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My girlfriend has a 2008 with around 120k miles on it. It's been pretty flawless but yesterday the RPMs started surging while idle and made kind of a high pitch humming noise when accelerating.
Today on her way to work she said the radio was going in and out, the battery light lit up and then the rest of the dash lights came on, and the speedometer stopped working.
What could be the problem? Could it just be the battery?
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For a while now, I have been hearing a very high pitch whistle noise from the turbo/exhaust area. Everybody told me it was an exhaust leak, but I never could pin point the leak. While I was under the truck last weekend I found the flex joint on the passenger side up pipe was broken a leaking.
I ordered a Dorman replacement pipe that comes with a new gasket and hardware.
I will be the first to admit, I am not a fan of Dorman parts... BUT, this pipe is really nice. It looks identical to the pipe being sold on Dieselsite.com, it doesn't have the scoop inside to direct exhaust gas to the EGR cooler and it comes with all the mounting hardware.
[URL] ....
Once I got the turbo down pipe out of the way and soaked the bolts with penetrating oil, I had the broken up pipe off in 30 minutes.
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According to the manual the high pitch sound is to let driver know that the pads are worn out but i checked and my pad still very thick after 15k miles.?
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I've been noticing some new noises in my Elantra in the last couple of months.
First, there's a clunking noise that sounds like it's coming from the steering area. It usually happens when I back up and rotate the steering wheel, like when I back out of my parking spot. More often it's in the morning.
Second, when I turn the fan on there is a high pitched squeal. If you turn the fan off you can hear the squeal more clearly for a moment as the fans die down. This one only started happening in the last couple of weeks.
I guess I'll have to take it in and get them to take a look. Last year it was a squeaking in the pano roof which only happened when it was hot out. They seemed to have lessened it but it wasn't gone completely.
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I'm on my 4th passat. Have an 08 Komfort. This by far is my most favorite of the 4 passats I've owned. This is the first VW I have had with satellite radio. I noticed not long after I got it that I could hear a high pitched beep that lasted maybe 3 or 4 seconds while I was listening to the satellite radio. It seemed to just happen at random times. I took it on a 500 mile trip a few weeks ago and I just figured out exactly when this happens............it happens when I hit the brakes while I am listening to sirius only. It doesn't happen while listening to FM or AM (I didn't try a CD). It doesn't do it every time, but at least 50% of the time. It almost always seems to happen if I have the cruise control on and I hit the brakes to disable it. I'm going to mention it to the dealer when I take it in for service.
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I've got a 2006 Prius - yesterday afternoon my wife and I noticed a high pitched whine coming from the front (maybe right hand side) of the car - we don't hear it until we reach about 50mph. It gets louder as we increase speed and then trails off when you step off the accelerator and can't hear it all below 48-45mph.
We bought the car new and are familiar with the various noises the car makes, but this one is new - never heard it before yesterday.
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It's been cold, but I've been driving. When I park and power down, I'm hearing a high-pitch sound...like a fàn...it lasts about 10 seconds.
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I have a 2003 Toyota Prius, that you have to push sooo hard to make it stop, the ABS and brake light are on and there is some aweful chime that is solid and doesn't go away (very high pitch), I just got the car, and got it like this. I think its signs of a BRAKE BOOSTER, but I have been unable to loacted that, I found the Master Cylinder, but looks like you have to remove the Hybrid engine to do... Is there a procedure for this...
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I have a 4 cylinder 2012 Toyota Camry SE. It is 3 months old and has 2,300 miles.
My husband and I notice a high pitch humming noise that happens mainly on the freeway, when you get over 45 mph. We tried ruling out different things like, bluetooth, radio, air conditioner, wind noise etc. We realized that the noise happens with you push on the accelerator pedal. If you hold the pedal to maintain speed, it does not happen. Only when you push the accelerator pedal. The noise was more noticeable when I drove it up in the mountains and had to push on the accelerator pedal off and on to maneuver turns and up hills.
I figure that we can bring it up to our dealer in October at our 5,000 mile service.
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I tried to start my 2005 Prius this morning and a high pitched noise started (the same noise that happens when you hit the power button without having your foot on the brake). The emergency light was locked on as well as a message on the display screen about setting the emergency brake. This has happened one other time an after about two minutes the noise stopped, and I was able to start the car. This time the noise and lock remained for about 20 minutes until we disconnected the battery in the back. We re-attached the battery after we removed the ignition key and after a few moments all the power seemed to be gone. The fob doesn't work at all and the electronic lights and dash flickered and faded out. Our gut instinct is that the battery needs to be replaced. Was it the 12V battery?
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Is this normal for the Camry? When you're flooring the car besides the typical roar I hear like a small high pitch noise, it's gone once I let go of the gas. I tested it & start to hear it at about 4000RPMs I believe. Recorded it on video but you can't hear it at all on video.
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I bought a 2002 accord with 105800 miles 3 weeks ago. I got the timing belt and water pump replaced within a week of that. I have noticed that the car makes a high pitch noise upon accelerating after replacing the belt. It does not happen always, but sometimes. I have noticed it on 3 days in last 2 weeks. A preliminary web search tells me that it could be a tight timing belt.
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I have had this issue with the braking system for about a year now. Most of the time when using the brakes, everything works fine, but once in awhile, it seems like the brakes on one (I think one) wheel seem to just let go, apply full braking power, or both one after the other. When this happens, you hear loud clunking sounds (which I guess it the caliper going from on to full off and back again) and the rear of the car will raise and lower with the instances. There are also times when a high pitched squeak sound comes from the wheel (like when a bus uses their brakes) which will normally happen a second before coming to a full stop. It does not happen at the same time, but I think is related. Going off the sounds and rear of the car moving I tend to think this is focusing around the driver's rear tire. The brake fluid has been changed, the brakes have been changed on all 4 wheels, and so have the all brake lines to the cylinders. There are no leaks anywhere in the system. The car does have ABS.
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I have a 1995 Lexus ES300 with 130,000 miles on it. When I reverse, I get a low-pitch growling and as as soon as I apply the brakes by a high-pitch, ungodly screech. This noise is definitely coming from the rear wheel areas. I'm not sure which tire is the culprit (I hear both sides from while listening from both the inside and outside). It happens frequently but is particularly bad on rainy, snowy, misty, or high humidity days. Two years ago I replaced the pads and rotors. At this point, the pads look to have about 40% life on them yet. This problem started happening about a year ago.
My initial thoughts were that it was just rusting because of the frequency on high moisture days. But both noises are way too loud for that. My second speculation was that the emergency brake was catching, but after examining it I think not. I've taken the entire assembly (brakes, rotors calipers, and emergency brake) at each tire apart and looked for any obvious issues that look incorrect. No luck. I've also applied brake quiet with similar results. Now my thoughts are that the low pitch is the rotors being warped. But that doesn't explain the screech and why it only occurs in reverse.
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