Prius (Gen 2) :: 2009 Touring - Loud Thump Sound On Acceleration
Apr 16, 2016
Purchased an 09 Touring and so far enjoying the driving experience. Getting 42/43MPG with mostly short trips. However, I have noticed one thing unusual. Not sure if I should be concerned or if this is a normal thing. I am a rideshare driver, and whenever a group of people get out and I accelerate away from them, I hear a pretty loud thump sound. This happens usually when a group of 3 or more exits and often does not happen when one or two people exit the vehicle.
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I'm a rideshare driver who drives about 1000 miles/week. I currently have a Gen 2 which I love, but I'm looking to upgrade to a Gen 4 pretty soon.
-Does the Gen 4 have the same kind of under-trunk storage area in the hatch/cargo area? This is important for me on the Gen 2 because it allows me to carry equipment while having an empty hatch space for passengers luggage. Does it depend on if you have a spare tire or not?
-Real-world MPG in extended city driving with A/C on?
-Where are the 12v outlets? And extend one into the hatch area?
-Is there a notable difference in comfort for touring vs non touring models?
-Does the driver's seat with lumbar support make a significant difference in comfort?
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I just picked up a used 2009 LS 460 AWD last week with 45K miles. I have put about 1000 miles on it so far myself.
When I hit any small depression in the road at 10-45 mph I hear a thump in the rear. The bigger the depression and the more weight in the backseat, the louder the thump noise and even an occasional bottoming out feeling occurs. It hasn't happened at highway speeds so far.
The bottoming out feel occurs only with a medium to large depression. I am not talking about a pot hole, just pavement depressions where two sections are not of equal height or you are transitioning from a primary road to a side street and the is a depression to allow for water run off, etc.
If I have someone sitting in the passenger seat and the backseat and accelerate quickly from a dead stop, I get a similar rear thump and even a bottoming out feel. This occasionally occurs even without a without a depression in the road. With no one in the back seat it does not do it unless there is a big depression in the road.
Finally, when cornering on a 270 degree off ramp at 40 to 50 MPH the rear end will start to hop and bounce. If I slow down to 15-20 mph it goes away. Still, it is irritating and embarrassing. I have tried all comfort settings and get the same results.
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On the way to work this morning in stop-and-go traffic, I noticed a new, weird noise from my week-old 2012 GTI with less than 500 miles on it.
The noise happens when letting of the gas in gear. Doesn't matter what gear you're in or what the engine speed is. Around a second after getting of the gas, there is a loud, depp bass thump, almost like a subwoofer hit from a close-by car. That's what I originally thought it was, but later determined it's something from my car.
What it could be? An exhaust noise? Something hitting? Is this a common noise on the new GTIs?
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Our excursion usually sits unless we are towing or need to haul a group of people. The past three days my wife has been using it as a commuter. Yesterday she told me that two times at start-up she has heard a loud clunk/thump sound coming from the rear of the vehicle. At first she thought it was happening when she engaged the brake to put it in drive. Today she called me and told me the sound came just after start-up while the vehicle was warming up before the brake was applied. What this could be? I wish I would have observed it so I could give more details.
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I have a 2008 Prius with 111,000 miles on it and lately, I hear a loud chirping, whining sound that is louder under acceleration and seems to vary only according to acceleration or deceleration. Acceleration makes a louder sound. The noise does not occur when vehicle is cold and first driven. It's only after it's driven for awhile and things are warmed up but then again, it doesn't always do it even though it's warmed up. Not sure I could reproduce the sound if I brought it to a dealer for service. When the noise does start up, it's very apparent and loud and then, after awhile, it goes away temporarily only to start up again.
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I just bought a 2012 C- 3 ... Today it's been very cold here (Chicago) the first day it's been this cold since I bought the car last month. Anyway as I'm driving every now and then there's a very loud thump on the roof like the wind is pushing the roof in. It seems to happen as bursts of wind hit the car.
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Just noticed a sound of air sucking sound under the hood on heavy acceleration only, the harder I push the louder it gets. Either sucking or hissing sound. I feel no difference in driving. No loss of power or anything else. Just the sound of air coming out like a leaking air line. I will check later this afternoon if its affecting my turbo boost. I have 235000 klms on the clock
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When I fuel up I hear a loud thump in the back of my vehicle, I then hear the gas pump nozzle click off after about another half gallon is pumped in. Without understanding the design of a tank or the gauge float etc. I am guessing that something is getting stuck and releasing under pressure once the tank fills up. Of course this has me more than somewhat concerned from a safety perspective. Note that this vehicle was brought in under warranty for the fuel sensor issue and the part was replaced, would this be related to that? Will the repair still be cover as a part of that work even though my vehicle is now out of warranty?
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I recently put an accidental extra 4 quarts, and I know hear a low thump ie like a piston but the engine runs fine and there is no power loss, just a simple draining off the pain I hope. The engine runs fine just notice this small metallic rhythmic thump on acceleration, and deceleration.
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2007 Camry LE 4cyl 125XXX miles ... The car sounds horrible at idle, but its not rough/shaky, just loud with a constant "thump, thump, thump" sound. It also whines with RPM increases, not just acceleration, but also while in park or neutral. Took it to Auto Zone and it tested with a bad voltage regulator in the alternator. In the process of calling around to different shops, they all seem puzzled that the alternator is bad, even though I replaced the battery 10 days ago and the battery light still flashes off/on while driving. So, before I go sinking a few hundred bucks into a new alternator, should I be looking at something else?
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I have a '74 Dodge B-100 van, 318 V-8, with a 3-speed A727 TorqueFlite tranmission (which was totally rebuilt about 20,000 miles ago). Overall, this old baby that we call "Blue Thunder" is in almost pristine condition. It starts well, runs great, and over the years has been highly reliable. It's been in the family for almost 38 years and is special to all of us. I've maintained it extremely well from day one.
Here is the big problem.....under very light acceleration at the 2-3 upshift, it makes a loud-sounding and aggressive-feeling "clunk" or heavy sounding "thump". Under hard acceleration, or accelerating on an upgrade (hill), it does not make this sound at all and I do not feel or hear it at all. There are no other accompanying symptoms such as whines, roars or vibrations. I recently took it to a reputable (in business for 35 years) transmission shop recently with the above problem description. He checked the fluid and adjusted the kickdown band. This same shop had serviced the transmission a year earlier. He recommended that I let him him take it to a general auto repair shop down down the street for a diagnosis on the "loud clunk" ....as he did not think it was a transmission problem.
I agreed for him to do so since, the shop "down the street" is also known for quality repair work. The written problem description was sent aong with the van. In a week or so, the auto repair shop called and said all they could find was a little wear in the spider gears in the rear differential. I gave them permission, since the differential was already open. to replace anything that looked like it needed to be replaced. It took a while to get the parts, but they replaced the spider gears, both side bearing cups, and 1 of the differential bearing adjusters. Of course the work included new gear oil and gasket for the differential cover. It was an onerous bill, but I didn't complain, thinking that the terrible "clunk" would be gone. I picked up the van and immediately noticed no difference at all. The loud "clunk" was still there under the exact same conditions.
I took it back and asked the owner to ride with me where upon I easily recreated the "clunk" by accelerating very lightly. He said, "Oh, that's in the transmission, because it's only makes the sound when it shifts from 2nd to 3rd gear". I called the transmission shop back and they want nothing to do with it....saying that a noise like that one is practically impossible to pinpoint. He said even if the transmission were rebuilt, he cannot guarantee the noise would not be there. Both shops say the U-joints, yokes, engine mounts, and transmission mount all look OK.
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Not sure if normal or a malfunction. Twice over the winter here in MN I have been accelerating and when I hit a icy patch the car made a loud thump/clunk noise loud enough to make be think something broke or that I ran over something like an ice block.
I had it looked at by the dealer and everything is suppose to be working normal. I tried to replicate ite on some ice but the traction control kicks in like normal with the flashing and all. I don't normally accelerate hard so it's rare I get traction control to activate.
Car is TDI SE
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The other day, I was coming home from work. After dropping off co worker, an old man pulled out infront of me. I applied the brakes. As car came to stop I heard a loud thump come from rear. Sounded like i was either bumped by a car, or maybe my entire rear end slid up 5 inches. But that's kinda what it was like. Then after the thump, I put my foot on gas pedal, and instead of car moving forward, the engine just revved. No movement, revved to like 3 grand. I let foot off gas pedal. And tried again. Car moved as normal. Then on the way home i attempted the same combo of rather quick brake and then gas. Same kinda thing happened. Not so hard of a thump. But noise from rear followed by the car no moving, just revving up till i stop and then try again. So even tho my story may suck n my explanation my suck more, whats going on? I just picked this wagon up. 01 glx 65k.
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Very loud very violent thump while driving at all speeds. Becomes more often and not as loud while accelerating. Decelerating becomes loud and violent again. Tranny fluid is fine and doesn't smell burnt. I haven't owned the vehicle very long but my family enjoys it.
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Today my car made a pretty loud thump when I put it in reverse and slowly let go of the brake. I haven't driven the car in 2 weeks. Afterwards, every time I brake there is a soft thumping sound that I can feel through the steering wheel, and the sound slows down with the speed of the car. I think I can also hear a very slight grinding noise while driving slowly in a quiet area.
I read in this forum to use the parking brake in an empty lot to see if its coming from the back tires. My question is, what was that loud thump in the beginning? Also, is it safe to drive to the mechanic (or can I fix it myself..)?
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On my way home from work tonight cruising on the highway, heard a loud thump followed by continuous thumps thereafter. Knowing this wasn't good pulled over to find a nice big nail in my passenger side front tire, great. thought I could make it home, I was about 6 exits away...one exit later nail flew out and tire was loosing air.
- luckily for me, I had a friend who lived nearby the exit the nail flew off and put on the spare.... now my question is I noticed some camber wear on the tire.. 15,200 miles to be exact on the stock oem bridgestones.
- I know these tires are complete crap but... is this camber wear normal? I've seen other posts about it but, is it the tires? or something to do with the car? I am pretty sure my alignment is fine. If I buy a new set of tires eventually will this end up happening again? Trying to gain some knowledge for the future.
Also is it true that with AWD cars, if you change one tire you have to change all 4? because it might mess up the drivetrain or something, at least that's what I was told.
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What can I do about my car it's not shifting, it's stuck in high gear and when I go from park to reverse it makes a loud thump. The check engine light came on and the codes are transmission control module it's a 2006 and only has 30,000 miles on it. It's hard to believe it's the brain so we changed the fluid and cleaned the sylinoids but then when I drove it around the block I put it in reverse it didn't make the loud noise and it shifted fine for a minute before I got around the block and almost home it made a loud banging noise and went back to not shifting again. What the problem could be.
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I bought a 2009 F-150 King Ranch a few months back. It has 125k miles on it and the only aftermarket thing on it is some larger tires. I love the truck but twice now (at two totally different driving instances) I have started hearing this bad sounding tap in the engine. The majority of the time it has ONLY been when I am in drive or reverse. I can especially hear it if I am going through a drive through. Anyways as I was backing into a parking space today it started making an even louder tapping sound. I recorded it and have provided the link to youtube..
It continued to make this terrible sound until I revved it slightly and then it went back to normal idle. This all started as I was in reverse backing up but this is the first time it has continued even into neutral. Really hoping for not terrible news on this. Ive read about the cam phaser issue and nothing has been done to those yet. It is the 5.4L and a 4x4. How to fix this and not have a clunker for a truck...
Here is the link to the youtube video of the truck running... it was too large to be uploaded on here : [URL] .....
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My 2005 Prius with 86K miles regularly got 48 around town and 49 to 53 on long trips. I sold it to my son and his wife, they are also getting the same mileage. I bought the 2007 touring used with 41K miles and have never gotten over 41 mpg highway, and around town is 38 to 39 mpg.
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I bought a used 2010 corolla and notice a loud humming sound at the rear when it reaches 40 mph. I figured it was the rear hub bearing assembly. I already bought a pair of Beck/Arnley 051-6262 hub assembly. I found two threads here about the removal/installation but did not say the torque of the 4 bolts behind the hub assembly. I read on the Toyota Manual that it is 74 ft-lbs. Do you think that this is too tight for a 10 mm back plate. The wheel/rims bolt torque is 76 ft-lbs but the nut is about an inch length. It is almost the same torque for an inch nut compared to 10 mm back plate. Is 74 ft-lbs right especially for an aftermarket beck/arnley brand? On the Toyota Manual, the 2003-2008 Corolla 4 bolt torque is 45 ft-lbs. The 2010 is 74 ft-lbs???
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