Lexus GX 2010+ :: Whine While Coasting Between 55 And 70 Mph
Oct 2, 2012
New 2012 GX 460 in 01/2012. While GX is coasting between 55 mph and 70 mph, noticeable "whine" from vehicle. (Sounds like the whine from snow tires, but that happens all of the time in a previous vehicle.) Noise disappears when the accelerator is engaged. Been like this from day #1 and now at 10k miles. Dealer seems perplexed; has said at delivery and at 5k service that it is the tires. Bridgestone dealer says "not our tires."
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I have noticed something about my 2010 Prius. Lately when I am driving the car for about an hour, the engine slowly reduces RPMs (based on sound) when I take my foot off the gas. The MPG indicator slowly goes from near zero to 100. Like VERY slowly. And that is just street driving below 45 mph. The car has almost 60k miles. Tires are correct and in very good shape.
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So I've noticed something on my 2015 Elantra that I haven't noticed on my previous car (Corolla). When I'm coasting at low speed (i.e. when I see a stop sign/red light I'll just coast until I'm closer and then press the brakes) it feels as though the brakes are sometimes being pressed when I'm not actually pressing them. Is this normal? Why does it do that? I'd like it to not do that as it's kinda annoying. Sometimes it "brakes" enough that I actually have to press the gas again otherwise the car is going too slow, which defeats the purpose of why I'm coasting in the first place as I do it to save some gas.
My Elantra has an automatic transmission if that matters.
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I just had an oil change done on our 2010. Also of note, I've just switched the winter tires over to summer tires - done myself. So here's the issue. When coasting, particularly at low speeds, a rubbing noise can be heard issuing from the front right somewhere. The noise goes as the rpms go and seems to go away when either braking or accelerating. I'm not sure if it's present at high speeds due to road noise which would overwhelm it.
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This is on a 2010 GTI with 20K km.
I've noticed a buzzing noise coming from the front of the car whenever I coast downhill. Almost sounds like an off-tune radio. Noise gets louder as the car picks up speed, and becomes quieter as I brake. What can it be? I think I was in 3rd gear.
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Noticed the barely audible (with good ears) high-pitched sound that emanates from the car when you let off the throttle enough to prevent any charge or discharge bar from showing? It goes away if you completely release the throttle or if you press the throttle a tad bit more.
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Why my 2010 auto trans 4cyl Camry often feels like someone is applying the foot brake when I take my foot off the accelerator? Is it the auto trans downshifting? When I feel it occur and slip it into neutral, it releases and I coast freely again. It's really annoying sometimes especially as I've been driving a 1995 Camry auto for the past 15 years which does not do this.
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Does coasting in neutral (to save fuel) cause any damage or wear when shifting the gear lever into Drive while moving?
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Last week as I was returning home I had a strange event in my Prius. I was coasting at about 30 mph when I heard a very faint pop sound a bit like a balloon breaking. It sounded like it came from the right rear area of the car. Afterwards I thought I detected a very faint chemical smell. Could this have been something involving the HV battery?
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Experiencing a noisy engine....especially when braking or coasting to a stop?
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I just took delivery about 2 weeks ago of a 2011 LS 460L AWD with less than 30k miles. I have a very annoying issue that happens every time I let off the accelerator. There is a consistent vibration that seems to be coming from the drive train. It's really annoying to me. This occurs when driving about 50 mph or greater, nothing when driving at slower speeds. There is a 30 day exchange policy where I bought the car from, hope I don't need to use it.
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During an extended drive of the new ride today, we noticed an intermittent vibration when coasting downhill around 60MPH. I popped it in neutral and the vibration disappeared completely. Also, it stayed vibration-free when placed back in Drive, without touching the gas. But as soon as throttle is applied and then you coast again, the vibration reappears.
This points to a condition that only happens when the torque converter is locked, which could be a vibration originating within the transfer case that once coupled to the engine via the locked torque converter uses the engine as a tuning fork, resulting in the vibration. The L-SB-0013-12 AWD Vibration TSB mentions an ECM recalibration, which likely changes the torque converter to unlock whenever you lift off the gas pedal. Is this correct?
I also remember reading about the other TSB, where the "magic expensive fluid" in the transfer case gets changed 3 times in rapid succession. This would address chattering clutches within the transfer case, eliminating vibration at the source vs. masking it by unlocking the torque converter.
We also noticed a misfiring sensation under light throttle conditions at around 40-50MPH. I'm wondering if this is in fact the transfer case clutch chatter issue also...since the 60k spark plug replacement has already been done.
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I finally got a recording of this, after trying to describe it without much success. Dealer drove the car 2x and claimed they don't hear it.
Video here, turn up your sound... noise happens just as the gas is let off...
As you can hear (if you turn speakers up, recording isn't very sensitive), it's kind of a high pitched whistling sound or whining sound. Happens when coasting (foot off gas) at 60mph. In gear or neutral, same noise. Only around that speed, only when foot off the gas.
What do you think this is? Some have suggested wheel bearing but if you listen this is more of a steady high pitched noise, not a helicopter like sound.
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I am a first time Toyota car owner. I bought a 2010 Toyota Corolla LE this past Saturday. It has only 42,000 miles on it, and I got a pretty decent deal on it! I'm still getting used to how the car drives, but it seems to be running great. The only thing I notice sometimes is that I am coasting downhill (not using the brakes) I notice a bit of a vibration sound coming from what sounds like the back windshield. If it keeps occurring, I might take it to the dealer for them to check it out. With my luck, the issue might not even happen though with them there.
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I have an 08 ES 350 and when driving and coasting between 20 - 60 mph, there is a rubbing, grinding, low frequency sound that I feel coming through the gas pedal. What is causing it?
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I purchased a ES300h in March 2013. Starting end of September I noticed a rattle (pebbles in a tin can tumbling sound) when I went up a slight grade, accelerating from a stop, or accelerating after a brief coasting on the freeway. The first time at the dealer they said stop using Costco gas and use Top Tier. I used Shell and Chevron and there was a 80% improvement but the nuisance still continued, some days more and some days less, meaning when it rained it poured.
On the third visit to the dealer, with two specialists on a ride along of course it does not make that noise, but left it there for them to find the continued problem and they conceded it is engine knock to which there is nothing out of specs with the engine AND say that this is normal. I have never had a car do this, maybe specific to hybrids? The service advisor goes on to tell me that they filled my tank with 91 octane to stop the knock, BUT, the manual says use 87!!!
Some say this can lead to engine damage, some say only blown gasket, the dealer says no problem! A friend of mine has the same car and has no issues.
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Annoyed by the wheezing noise on 2014 ES300H? It only happens when I let go off the gas pedal or breaking. Is there a way to rid of it?
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I assume it's normal but at say 35 MPH or so coasting down a hill when applying the brake the RPM's rise to around 3K. Auto downshift to support braking?
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When I'm driving at Highway speeds, if I let go of the accelerator to coast and then reapply the accelerator, I get a jerking, bucking sensation. It's only at high speeds over 60 mph or so. I'm only coasting for a second or two, not long at all. Otherwise the transmission works well.
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I have had my 2011 Prius for about half a year. Lately, I noticed a louder than normal AC compressor. It is very loud, and I have driven it in hot weather before so I think I know what it normally sounds like.
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Steps to reproduce:
1) Start Car (reproduceable with A/C on & off)
2) Wait for wind-up whine (starts out low, then speeds up, then stops) -
I attached MP3 and Wav files in .zip attached so you can hear the noise - recorded on my phone). posted on Youtube ....
Listen to first six seconds. My sound file has the noise for a slightly longer period.
My car started doing this about a week after purchase. It's been consistently doing this every morning. In high elevation, colder climate the sound is louder and longer. Car's been to service 4 times. Service Trip summary:
1) Returned as cannot reproduce
2) Replaced Starter (even though sound happens After start)
3) Replace belt tensioner
4) Service stop, tech said he would contact his rep - rep said no fix "it's normal- related to component in timing chain". (Huh?)
Service tech said he's heard a few of the 2012 Elantra's with this noise.
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