Prius (2001-03) :: Humming Noise From Rear At Highway Speeds
Aug 28, 2013
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).
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I picked up a 2012 2.5L SE w/ Sunroof and Nav over the Christmas holiday.
I have been driving back and forth between Dallas and Kansas for work and I've notice an "odd" noise at highway speeds. When I have the cruise control set for the upper 70's and the car is in 6th, I can hear, for lack of a better word, a hum from the rear of the car. If I switch the Tiptronic down to 5th the hum goes away. As soon as I shift back to 6th, it returns.
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A very odd hum from the rear (2005 f150 4.2) that occurs at all speeds. Low speed it occurs regardless of load on the drive line. At higher speeds it only happens when i have considerable load on the drive line. All bearings in the diff were replaced less than a year ago when the main pinion bearing went and the diff gears were in pretty dam good condition. Wheel bearings are not getting warm to indicate a wheel bearing. And when i let off the throttle it hums for a few seconds and dissipates as the tension on the drive line goes away. I even looked at the carrier bearing assy and it seems to be in good working order. I live pretty dam far from any type of service so i was just curious before i start trying to trouble shoot this any further.
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I have a 2009 Jeep Grand Cherokee 4x4 Laredo. For approximately the past 7 months there has been a noise coming from the left rear of the vehicle at speeds above approximately 60 mph. The sound is not metallic in nature, it sounds more like a seat belt flapping against something. The frequency is approximately 2 Hz and is very consistent at highway speeds. The driver can seldom hear it apparently due to interior acoustics, but the someone in the passenger seat or the back seat hears it plainly, over a period of time it is very annoying.
In addition, if you touch the left rear interior side panel (in the cargo area) it seems like you can feel a small vibration that matches the sound. I have had the vehicle inspected by Jeep, they find nothing. I have had the left rear interior panel removed to see if there was a problem with the sound system cable bundle that runs through there, but it was OK. We thought it might be the metal gas tank door vibrating in the wind stream, so we taped the door down, but the sound was not affected. What the source of this sound might be?
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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.
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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.
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It feels like its catching, or its off and then comes back on ?? No codes, none.
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Car suddenly started a high pitched whistling noise/metal on metal sound at highway speeds. It is intermittent, no noticeable pattern w/acceleration or braking. Similar sound at lower volume when the shock/spring is depressed (pushing down on that corner of the car). Louder at low speeds.
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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?
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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?
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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.
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Happened to go down to garage to get something from pip about 3 hours after charge was complete and noticed loud hum coming from right rear wheel well area.
We had not had any lightning storms, electrical interruptions or anything odd; house is on whole house surge protection, and 240v evse has been working fine.
Hum disappeared when car was booted up in ev for a moment and then turned off. Hasn't come back on in an hour.
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For the past few weeks, I've noticed am occasional humming noise while driving. It seems to happen more frequently at lower speeds (around 15-30 mph, though it has also happened at around 45 mph), and it stops as soon as I apply the break. Turning the A/C on and off does not appear to have an effect, nor does opening/closing the windows (in case the humming noise was just air at a certain vibration), nor does the radio.
I took it to a mechanic, but it didn't happen when he drove it around the block, so he said that it's probably due to tire pressure imbalance, adjusted the pressures, and told me to bring it back if it happens again.
What this is, or what other things I should look for?
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I have been feeling a vibration in my right rear at highway speeds (70+mph) At first i thought that maybe it was a wheel bearing but that would constantly be vibration and it wouldn't be off and on like it is. The car is on coils and a friend mentioned to check and make sure my right height is the same all around. I checked just by comparing the fender well gaps and it does seem as if the right rear is a bit lower. If this is the case, can ur car being a little lower on one side cause this vibration? if so, how?
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I have a 2002 Malibu and we have had the car about 3 years and since we purchased the car it has what a humming noise from the front when changing lanes on the highway or when making curves on the highway only when turning left.
Being an avid Car Talk listener, I decided this was probably being caused by wheel bearings and I decided to tackle the job myself and changed both left and right front wheel hubs and the noise did not change, it is still there exactly as before ! I also replaced the brake pads and rotors while it was apart.
Remembering other car talk conversations, I decided next that it must be the tires, I replaced the tires which were due for replacement anyway and guess what ? The noise is still there exactly as before !
Out of ideas, I took it to a mechanic and he said that he ran the car on the lift and was able to reproduce the noise on the lift and he felt it was coming from the differential within the transmission. While it was at the shop I had him do a wheel alignment as well to eliminate any sort of suspension issue.
My question, does this make any sense ? To me when the car is on the lift, the differential really isn't doing anything, the wheels aren't turning at different speeds because they aren't touching anything therefore to me, the diagnosis of differential doesn't hold water.
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Layely with my 2011 SE I've been getting a low pitch humming noise while traveling at low speeds, mainly going into a stop sign or light and searching for a parking spot. It happens with the AC off as well, not so much a vibration just a low pitch hum, also does it with foot off brake too as I just let it coast. Kind of annoying and want to make sure its good.
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I own a 98 Deville with 125k miles and bad upper rear knuckle bushings, seems common. At highway speeds, the rear of the car floats noticeably and on a rainy road, it is down right dangerous to drive. My logic is that it is a BUSHING! They make all different sizes and surely there is bushing that is the size I need and a way to press out the old and press in the new. I have the right rear off the car now and will pay a visit to my local mom and pop automotive machine shop to see what can be done. Even if they need to bore out the inside diameter of the knuckle to accept an over sized bushing, there has got to be a way.
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My '04 Santa Fe (135K miles) has been doing this for a little while.
Between 65 - 75 MPH on the highway, under acceleration, I experience what I can only describe as a "shudder".
I don't believe it's a wheel balance issue, because if I'm coasting or maintaining that speed everything is stable.
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We have an '03 Santa Fe (2.4L). We are the original owners.
About 18 months ago, one of our Ignition Coils cracked and caused a misfire when then engine was under load. I replaced the coil, wires, and plugs myself at that time.
Since that time, we have experienced intermittent engine jerking while at highway speeds. There does not seem to be any pattern, and it does not happen every time we drive it.
I took it to the dealer who diagnosed a valve cover leak. They replaced the gasket, one ignition coil, wires and plugs. The problem still happened intermittently after that. I brought it back to the dealer, who diagnosed a valve guide/seat leak. Oil is getting into the cylinder and fouling the plug they say.
I could not afford the fix (and was very dissatisfied by the service I received) so the dealer recommended to change the plugs every 3 - 5K miles to get me through. I was told this on 03/31/09 (125695 miles). I replaced the plugs, wires, and BOTH coils again at that time.
Last week @ 130K miles the engine jerked again. I replaced all four plugs again Sunday morning, but the ones that I pulled were NOT look oil fouled. I showed them to a mechanic friend and the guy at the auto parts store. Both agreed that the spark plugs looked almost new. Sunday evening, while driving on the freeway, the car jerked again!
Since this happened again SO soon after changing the plugs, I really have a hard time believing the valve guide diagnosis. Some possibilities I have seen/heard:
- Crank position sensor or camshaft sensor (This was replaced at 78K miles along with the all of the belts)
- Clogged fuel filter
- Bad O2 sensor
- Vacuum leak from the hose that is between the throttle body and the engine casing
- The dealer's valve seat suggestion
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I have a 1998 Ford Explorer 4X4 two owner and only 63K miles. All service records including tranny flush. Tranny shifts fine, there are no "clunks" when shifting out of Park.The only symptom is an occasional bump or thud ( maybe more like a jolt )coming from underneath at the rear at highway speeds. Sometimes it is more pronounced than others. I don't believe RPMs change when this happens. Around town is fine and only at constant speeds above 55 which makes it difficult to recreate. I have checked for anything loose underneath ( incl spare tire ) and can't find anything.
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I have 18k miles on my IS350 AWD Fsport. Brought it in for shake at highway speeds around 70-80. Dealer called and said steel belts are showing on REAR tires on my ALL Wheel Drive. My mileage is 2/3 highway. Went Hankook Ventus V12s on my 2IS and fronts would wear much faster...
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