I have noticed a loud humming sound coming from the truck when I have the AC on. Also you can feel the vibration as well. I turn off the AC and it goes away. All this happens on an infrequent behavior but does happen daily. what gives?
View 2 RepliesOur recently purchased '04 V8 Touareg is increasingly sounding like a jet turbine engine upon start-up, and especially as winter approaches. We're told it is probably the DC-powered fuel pump. Any way to reduce the aural effect?
View 12 RepliesI noticed today when my Touareg is running but in park, each time I step on the brake I hear a loud clicking noise coming from the shifter. I assume the noise is the safety lock engaging and disengaging that allows you to put the car in gear while the brake pedal is pressed. I never noticed the noise before but usually I have the radio on. Is it normal to be able to hear this noise?
View 2 RepliesI have a problem with my 1986 Toyota 4X4 pickup for over four years now,the problem is a noise from the front end that occurs when hubs are in Locked position a loud humming that comes and goes, I can hit the brakes hard and it goes away for a few seconds, I can hit a bump and it goes away for a few seconds, I can take a sharp turn and it goes away for a few seconds. This woowoowoo or hum only happens when the hubs are locked not when they are in the free position, I cannot shift in 4wd and make it go away for a few seconds, the noise gets worse the faster I go, it also gets worse the colder the weather is. I have replaced the axles twice and the front diff once and still has a noise, I have checked the wheel bearings for play and they are fine, I have repacked the hubs with fresh grease, the sound, sounds like metal to metal friction.
View 5 RepliesOur car is a 2003 2.2L 4 Door. 132,000 miles.
About 3 days ago it started doing this thing where once we hit somewhere between 30-40 mph, it started making a low pitch humming sound. At 40 MPH+ it is very loud. To me it sounds like an airplane, I don't know how else to explain it. There is no shaking, though sometimes I can almost feel the vibration from the humming at my feet. My husband says that the higher the RPM's, the louder and slightly higher pitched the sound is. If we go below 30 MPH it stops.
We were a little late on our oil change and I assumed that was it, but got it changed today and it's still doing it. Other than that, about 2 and a half weeks ago, our rear driver side tire went flat. My husband was in the middle of no where on the way home from work so he used Slime and that fixed it (never went to get it repaired because we didn't have the time and it didn't go flat again).
Could it be that the tires are not balanced correctly because of that, and it is causing the humming?
Also, this may be completely unrelated but: The only other problem we have had/still have with the car is that about 2 years ago we drove from Texas to Nevada, and at one of our stops the coolant dumped out (did not overheat/no other issues). Took it to 2 different shops and they couldn't find anything wrong with it. Drove fine until 6 months ago driving from Nevada to New Mexico, it did it again, but this time it also overheated. The mechanic said it was the water pump. Replacing the water pump (which is expensive!) did not fix it, so without consulting us they also changed the thermostat. Charged us for both, told us it was fixed, and about 2 month ago it did it again, but did not overheat/no other issues again. Hasn't done it since...seems it only happens on long drives. Anyway, I don't think it's related, but I thought I'd mention it.
I am hearing this buzzing sound in my trunk its really loud for ex: those annoying sounds people played as kids that people over "18" cant hear...back to the point its by my rear left tail light inside that area where all the wiring is also kinda hear it where the spare tire is all my lights work I unplugged the light and it still made the sound! It only does it when the car is running. Car is stock aside that it has no radio and the cd changer in the area that noise is coming from idk if its because a few wires that connect to the cd changer or what ever it is are unplugged but its coming from that area of the car its really high pitch and annoying.
View 13 RepliesThis is a question about a Subaru Outback, but probably pertains to many other cars as well. I have a 2006 Subaru Outback with 112K miles. I bought new tires for it in May 2012, and in September 2013 I started to notice a low humming/buzzing sound while driving. I looked online and came up with 2 options - either the wheel bearings or the tires. Because the sound changed pitch depending on the road surface, I thought it must be the tires. I took it in for an oil change and had the mechanics check the bearings. They said the bearings were fine, but the tires were cupping and feathering badly because I hadn't rotated them, and that was the source of the noise.
I had them rotate the tires and do an alignment and went on my way. The sound slowly got worse - it peaks at ~65 MPH and then changes pitch above 70 MPH and is not so bothersome - and I started to lose gas mileage ( 4-5 MPG). On Dec. 30, 2013 I took it in for the next oil change and bought brand new tires - Bridgestone Turanza Serenity designed for quietness - and had them do an alignment, and drove away only to find that the noise is still there and I still have lousy gas mileage.
My next thoughts were the transmission or the catalytic converter, but since the noise doesn't change when I take my foot off the gas or put it in neutral I don't think it is either one of those. The alignment showed that the Caster on both front tires is off, but since both tires are off by roughly equal amounts I was told that this is not something to worry about. I do occasionally notice some vibration while driving or while idling, but it is intermittent and I don't think it has anything to do with the noise.
B6 manual, after 20k miles with Dunlop Sport Maxx 235-40-18 tires (still pleny of tread left, even on fronts) a moderately loud humming noise has developed, loudest at 35 mph but even heard at 10mph, with an irritating resonance of subwoofer-type. Noise changes somewhat with road surface, but not much. Not related to engine speed, gearbox, or radio. My next step will be to swap wheels.
For now, any thoughts as to the cause?
For a few months, when the AC is running for a little while, it would hum loudly. If I turned the AC off, after a few minutes, it would stop. When I turned it back on, a few minutes after running again, it would start that loud humming again. While driving down the freeway this evening, my AC stopped blowing. When the car is in idle and the AC is turned on, you can hear something trying to "run", but no air comes out. What this could be?
View 4 RepliesIn January I purchased a front wheel drive 2010 Toyota Highlander with 23,000 miles. When driving just over 60 mph, there is a fairly loud humming sound at the back of the car (seems to be more toward the right rear). The dealership replaced the LEFT rear wheel bearing (they said the right bearing was fine) and performed road force balancing on the new Yokohama Geolander tires I purchased with the car. Unfortunately, the annoying humming sound has not gone away.
View 8 Repliesbrought my treg in for my 5k service and also got the AC humming noise fixed. not sure if everyone has the same symptoms. but for me, the humming usually starts when the AC is over 70 degrees and you hear a humming noise that sounds like it's from the left side of the dash.
turns out that it's the vibration of the secondary water heater (located on the front left fender) that's causing all the funky "humming" noise. tech fixed it by modifying and moving the bracket for the water heater to prevent further vibration. so far i haven't heard any humming noise. and I hope that's the solution for it.
[URL]
I have a 1981 240 Wagon with 182K miles on it. When I reach 45-55 MPH on the highway the car starts to hum and roar. It is not horrible by any means but it has gotten louder over time and now the car kind of vibrates. At 60mph it stops and quiets down. Now I am unsure if I have a turbo or not and I feel like that could just be the turbo mechanism kicking in but I am not sure.
View 4 RepliesNot sure if my 13' rx350 is haunted. Went in the garage (car had been sitting for hrs) and heard this pound humming. Checked everything in the garage and kneel down near driver side /passenger door and could hear the humming coming from under the car. Checked to see if the radiator fan was running ..nope. This has occurred on 2 occasions that I know as it seems to be random so I am concerned if I take it to dealer I'll get the "can't duplicate"...
View 6 RepliesWhen I am in reverse sometimes the left rear makes a loud humming sound like the brakes are rubbing or something. What do you think this is???
View 3 RepliesHave this issue during full stops or at slow speeds?
View 4 RepliesMy 2011 malibu has approx. 20,000 miles, it makes a loud humming noise that is very annoying, can't even hear someone talking and must turn up the radio. It gets much worse when you get up to 55mph and above. I thought it might be the tires but they look good, but could it still be the tires?
View 5 RepliesI thought it was the tired due to the cold weather. But now it is warmer the noise is still there. Bareknuckes previously mentioned wheel bearings as a potential problem. The car is driving (sound-wise) like I have some huge mud-bogger tires on or like crossing a cattle-guard continuously. so loud (in the cabin) that sometime I forget to shift because I hear the humming rather than the engine.
View 2 RepliesII had the vibration/hum for the first time when you reach 70mph and I need to know if it is safe to drive for about a week. I have looked but can't seem to find the answer.
View 8 RepliesMy father and I have an '05 W12 Phaeton with 54k miles. It's developed a peculiar humming noise (very harmonic like a resonance) that is present any time the car is running. My father insists on taking the car to an independent European car repair facility instead of the dealership (much to my displeasure).
The shop first said it was transmission related and advised a fluid change. This did nothing to fix the issue and I'm not even confident that they have the ability to do such a thing correctly without dealer specific tools. Car never left the shop as that obviously did nothing.
Next, they claim there resonance was felt / heard through an oil line. They changed oil and filter thinking bad oil filter (crazy, I know). This also did nothing.
Now, they say that they attempted bypassing the oil cooler and this made the noise go away. The are advising replacement of the oil cooler assembly.
Problem that developed after our 03 xle got whacked by a Harley in the right front wheel. The repair shop changed out the spindle and wheel but we got it back with a loud humming noise over 40 mph. The shop said it was the axle shaft bearing and not related. I argued and the insurance company reluctantly agreed to replace the shaft,bearing, and housing. Got the car back and again, the same humming only less faint and obviously coming from the trans. Everyone is dodging responsibility and it looks like we are left to sort things out on our own. Figures. This car road perfectly prior to the accident. I can't find any online diagrams of the trans to see what the shaft fits into. Supposedly the shop is holding on to the old shaft, I was going to go and look at the end splines, I believe that's what it has.
View 2 Replies2005 Jetta. The car makes a loud deep humming noise once I hit about 75mph, and goes away once I get to about 82 or so. I've taken it out of gear and matched the rpm I get at those speeds, and I don't hear the noise at all. It's only when I'm in gear. What this could be?
View 4 Replies