Subaru - Outback :: Low Humming Noise Started At Around 40 MPH Or So - Front Engine Cowling
I noticed a low humming noise lately on my wife's 2007 Outback which started at around 40 MPH or so. I thought it might be something with the added roof rack attachment or tires which are Michellen Rain Force tires installed about a year ago. It sounds like an aerodynamic issue to me. Nothing has changed on the roof racks and the tires show no sings at all of unusual wear.
I looked in front of the vehicle and underneath to see if I could see something and noticed the cowling immediately under the exhaust manifold and where I removed the small door for frequent oil changes is bowed down in the rear creating a scoop which I think is the humming noise. I am trying to find the darn door in the garage so I can re-install it, but it got me thinking, is the whole cowling even necessary to have under there?
I know it can prevent rocks and things from hitting the underside of the engine, but is it really more for simply aerodynamics? It is a pain sometimes working underneath because it blocks access to everything. I was thinking of simply removing the entire contraption.
Prius (Gen 2) :: 2007 - Front Wheel Bearing Started Humming
I have a 2007 the front wheel bearing started humming real bad, changed it out. Can't seem to get the right front brake bled good. Did it three times. No air. Today locked up the left wheel upon putting on the brake, the right one ain't working. Is there any thing I can do other than bleed the left front again, check fluid?
View 2 RepliesLexus GX 2004-09 :: RPMs Started Surging While Idle And High Pitch Humming Noise When Accelerating
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?
Prius (2004-09) :: Humming Noise Starting At About 45 Mph - Brake Pedal Clink / Pop Noise
Two things I have just noticed on my '09 with aprox. 120,000 miles.
Starting at about 45 mph, I am getting a humming noise
Doesn't get louder as speed goes up either, stays the same 45-75 mph
Have Bridgestone Ecopia EP422 tires, did rotation, noise did not change location
Noise does go away gradually when slowing down to a stop (after I have reached 45)
I am deaf on my left side, this is hard to tell where it is coming from
Second is this really odd brake pedal clink / pop noise. When brake pedal is depressed fully to the floor, car ON or OFF, there is a clunk
See attached links to the noise.....
Brake pads / rotors are like new, plenty of life on them. I did have the inverter pump replaced per the recall (I read somewhere this could be related?)
Car OFF -
Car ON -
Prius (Gen 2) :: 2007 Humming Noise Begins At Less Than 20 Mph
My 2007 Prius Hybrid (92k miles) has developed a loud humming noise. It seems to be coming from in front of the driver side under the hood.
The hum begins at less than 20 mph and changes "pitch" with speed. It sounds like a tire with low air (not the problem). It also changes when the car is turned from side to side. No change in performance or MPG otherwise.
Wheel bearing is what most are saying along with a fluid situation with the transaxle.
Prius C :: Humming Noise After Parked For 4 Hours
My new prius c two has been parked in the garage for 4 hours since getting home from work. I walked out a minute ago to take out the trash and it was making a humming noise, like electric humming.
View 4 RepliesPrius (2004-09) :: Humming Noise Under The Hood
I loved my 2009 Prius until this weekend. I just turned over 31,000 miles and now a loud humming noise has developed under the hood while driving. It has not been cold here and this doesn't start until I reach around 24 mph. It remains while the gas engine is running or I'm coasting with the engine off. The humming is there in D or in N and there no sound while turning. When I am under 24 mph the noise is gone. I have set up an appointment with my Toyota dealer for this week, but wanted to know ahead of time if any other Prius owners have had this issue.
View 5 RepliesPrius (Gen 3) :: Buzzing / Humming Noise From AC Fans - Is It Normal?
Was the warmest/hottest day of the year here so far and my black Prius had been parked in the sun all day. When I came to drive the car the a/c came on full power to lower the cabin temperature.
However, from the front of the car the two fans were making a really weird buzzing, humming noise (but were both spinning at high speed). Now I know a/c fans work flat out sometimes but I have never heard a noise like this before on a cars a/c. It almost sounded like the noise a jammed lawnmower makes, or some of the old lifts/elevators doors make. Almost an electrical buzzing noise of a solanoid but it was coming from the two fans.
Is this normal? Was it the fans or maybe the compressor or both? The a/c was working fine and was ice cold. When the cabin temperature reduced the noise reduced a disappeared with it. However, I did manage to repeat it by turning the a/c internal fan speed to full on a low temp setting.
Prius (2004-09) :: Humming Noise From The Front Occasionally?
I can hear a strange noise from the front occasionally, independent to my operation. It sound like rolling a cassette tape in a old driver. The sound repeats every several minutes, and lasts about 5 seconds each time.
When I standing outside the car, it hears louder from under the bonnet.
Prius (2010-12) :: Low Humming Noise From The Front While Driving
Just got recently used prius 2010 and noticing low humming noise while driving.. every couple of minutes at slow speeds.. not sure how it is at higher speeds. Sounds that noise coming from somewhere front.. and remind like air conditioner in older car moving some parts when you switch from hot to cold . is that normal? sounds happen when ac is on and off.
View 7 RepliesPrius (2004-09) :: Transmission Noise / Humming That Follows The Speed Of Car
I've noticed about the last 4 weeks my 2008 touring Prius (85k miles) seems be running louder than it always used to. There is a sort of humming noise that follows the speed of the car, whether the engine is running or not, in neutral or drive. No warning indicators on the dash. No change in mileage observed. Seems slower to accelerate too, though I'm not entirely sure. I'll probably bring it in to get checked.
View 14 RepliesPrius (Gen 3) :: 2012 - Humming Noise From Rear Of Car When Parked In Garage
Got home from work the other day, shut down my 2012 Prius 4 and went into the house. A couple of hours later went into the garage to drop a trash bag and heard a humming/whirling sound from the garage. Walked around the Prius and isolated it coming from the bottom rear of the car. Went and got key, turned the car on, then off again and the noise ceased. What that was? Fuel pump maybe? And why did this occur?
View 2 RepliesPrius (2010-12) :: Humming / Moaning Noise Today At Very Low Speeds
2013 prius V. Noticed a humming/moaning noise today at very low speeds. Don't think it was the electric motor, as it didn't indicate that it was charging.
View 6 RepliesPrius (2001-03) :: Transmission Malfunction - Whining / Humming Noise
I began hearing a whining/humming sound just a couple of days ago esp when hitting 45mph and then would notice as I took my foot off of gas. I had hoped it was either tire or bearing related, but Toyota tried for over an hour and finally determined it was transmission related..a new transaxle assy etc would cost a total of 6500$. However, they said they did not think I had to do anything right now as everything is well lubricated..they even thought it could remain the way it is for a year to two. My Prius has 180,000miles on it. Should I attempt to find a salvage transaxle and risk having it put in? Or should I cut my losses and given up?
View 1 RepliesPrius C :: 2013 - Whirring / Humming Noise At High Speeds
I noticed it a little after driving for days on very snowy/slushy/gritty roads where I had to plow some parking spots with my little 2013 C3. Tonight I was driving into Vancouver and back at 100+kph and noticed like a whirring sound or like a higher pitched humming sound possibly from drivers side front tire?? A little vibration felt through the wheel.
View 7 RepliesPrius (2004-09) :: 2008 - Airplane / Humming Noise In 50 - 60 Mph Range?
I have a 2008 Prius, and I have a couple noises, one of which is related to the airplane noise. I've noticed recently mine starts to make that humming noise in the 50-60mph range (less so at higher or lower speeds). There is 44,000 miles on the car.
View 3 RepliesPrius (2001-03) :: Humming Noise From Rear At Highway Speeds
I have a 2001 w/94k. New tires and alignment (3k). Recently I have been hearing a humming noise which can start to be heard around 45mph which gets increasingly loud up to 65mph, and then seems to quiet down if I go above 70mph. From the driver's seat it sounds like it's coming from the driver's side rear of the car and from the passenger seat it sounds like it's coming from the passenger side rear of the car. So it definitely sounds like it's coming from the rear of the car. Bringing my car in to get looked at it is difficult with my work schedule, so I thought I would try here first. Around the city there is no noticeable sound and there has been no loss in MPG that I can tell (44-47).
View 8 RepliesPrius (2001-03) :: Humming Noise At About 35 Mph - Stuck In Battery Charge Mode?
I have noticed a mid-pitched humming noise in my '02. I first noticed it about a week after getting four new tires put on it. It is speed dependent, and is most noticeable at about 35 mph.
Somehow I have gotten it in my head that the car might be stuck in "battery charge" mode. I can't tell easily because my car has a permanent power steering problem so I don't have the charge/power car diagram on my dash. I can still feel a difference when I shift into "B" when going downhill.
Prius V :: 2012 Makes A Humming Noise / High And Low Pitch But No Longer Than 2 Minutes
My Pruis v makes a humming noise. Sometimes. Doesn't happen all the time. Don't know when it will happen. When it does happen, the car makes a humming noise. High pitch and low pitch-no longer than 2 minutes. Seems to be coming from the right side of the vehicle. It is embarassing when we have friends in the car, the noise comes on , and the friend asks, 'what's that noise' and i shrug my shoulders-i don't know.Took it to service. Manager said he has to hear it to determine what/where it is coming from. If it isn't making the noise, he can't tell me where it is coming from. Took it back today and now we have a loaner so he can drive it for a couple of days to try to hear the noise.
View 7 Replies