Prius (Gen 2) :: Unusual Grinding Noise When Accelerating From Dead Stop
Jun 22, 2013
I'm experiencing an unusual grinding noise when accelerating from a dead stop but only in this specific situation.
1. When battery is at a low state of charge and the AC is on, therefore, whenever I slightly step on the gas the engine will immediately start.
2. Only under this condition, when I slightly press on the gas and the engine will start to charge the battery and propel the car at the same, there is a slight grinding noise coming from the front of the car. I don't know what this noise is, it sounds like gears grinding, it's very light though.
I know it's not the brake accumulator noise, because that's a whole different sound, and also this only happens under the condition I described above. When battery is low and ac is on, and the engine will need to start right away even when gas peddle is slightly depressed.
The best way to describe the sound is if you were to take a soda can and cut it in half and rub the two halves together (the edges) it sounds like that.
Also, there are no lights on the dash. It's a 2009 with about 73,400 miles.
The transaxle oil has already been changed maybe 10,000 miles ago.
The noise started recently, at least I only noticed it recently since it's summer and I have the ac on much more. There are no drivability issues, but the thing is, this noise was not there before, I know I'm not hearing things. You know when you drove a car for quite some time you will naturally know what sounds are normal and what sounds are new.
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I have a 98 Audi A6. Immediately when I hit the accelerator from a dead stop I hear a slight bang that seems to come from under the car in the area under the front drivers seat. It only happens when I hit the gas and the car starts forward. I'm not putting the pedal to the floor either, just a nice gradually start from a dead stop. This is the only time that I hear this noise, nothing while driving or making turns. The noise sounds like when you might squeeze and empty tin box! that distinct bang you hear. What might this be?
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Here's the details. The car is an automatic for starters. The noise mainly happens when accelerating from a dead stop. I'll be at a red light and when it turns green, I let the brake go and gently step on the gas and click...there is the noise. Its just a single click, loud enough to annoy me and loud enough that I could hear it when the radio volume is set to 12 or so.
It has also happened mid driving when I release the gas pedal to slow down without using the brakes. Right when I release it, I hear the click...once again a single click.
Now I have taken it to the dealer as a concern because that click wasn't there when I bought the car. They told me it was normal and after waiting 2 hours for a simple oil change to be completed I wasn't ready to argue with them. But I am getting to that point that I'm ready to argue with them, considering the car is so new and still under the warranty.
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I am going to buy a cheap 2004 CRV from work. They think it needs a wheel bearing, and it might.. However I think the sounds we are hearing is a bad motor mount. When accelerating from a dead stop it makes an odd noise that sounds like a wheel bearing, but it is quiet at speed and while jerking the wheel.. There is no weerrweerwerrr... In Drive if you have your foot on the brake, and hit the gas the motor rocks back further than I think it should. After looking at the mounts themselves though, the only one that looks bad is the driver’s side trans mount (near the air box). It looks like the rubber is broken.. So If that is my bad mount would the motor still rock, or could I have another bad one somewhere??
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This auto has 143,000 miles on it. I recenty noticed a creaking noise from the left front when accelerating from a dead stop. The shop I have used for 15 years said that the motor mounts are deteriorating and should be replaced. I trust the guy but would like to avoid the $1,400 repair. There are no symptoms other than the ocassional noise.
What is the downside of ignoring his recommendation? What other symptoms can I expect if I delay the repair? Can this be a serious safety issue? I plan to keep the car for another two years unless I bite the dust first or the engine falls out.
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I have a2007 Camry SE and this morning it was quite cold and when i started it it was making a unusual humming noise. my girlfriend said it contined to make the noise while accelerating. Just started the first time today.
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I recall some folks (with certain VIN#s) getting a TSP for correcting the lag when accelerating from a dead stop. I asked my dealer about it during routine service several months ago, but no fix at that time.
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Our 2015 es350 with 2,500 miles hesitates when accelerating from a dead stop, such as from a stop light. We are told this is to be expected with this vehicle. The dealership test-drove the car and say there's no problem. But this hesitation is unlike any other car we've experienced.
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I have a 2001 Camry LE, 4 cyl, 2.2 liter, automatic transmission, 163Kmiles on it.
I'm hearing what sounds to me rather like a grindy sound at around 1400-1600 RPM. Initially the Camry seemed to do it only after getting into 2nd gear at about 10MPH, but now i see that it is associated with RPM and not the gear so much (the noise is less frequent and less loud in 2nd and 3rd gear- not noticing it ever at above that). I should say that the Camry has been making lots of noises since a new exhaust was put in by a cheap Bosnian shop.
It seems to only make that particular grindy noise when starting from a dead stop, but not if i was already coasting at all. So far as i can tell it seems to only happen about half the time- if I'm accelerating very slowly it doesn't seem to happen much. If i start climbing a hill after a dead stop it seems to come on fairly reliably.
It does not seem to make the noise when passing down through 1600 RPM while slowing down or revving down.
When i started the Camry up today, the noise cropped up well before i got to 8MPH (where it typically shifts into 2nd gear). Which is to say the noise appeared before it even started to shift out of 1st gear.
If i stay in Drive or Reverse and apply the brake so as to not go anywhere, the noise generally starts around 1600RPM. Since the car isn't moving, i think this might rule out the transmission. I hope.
However when in Neutral or Park and i bring the engine up to 1600RPM and beyond, the noise does not appear. So that's perhaps not so good. Of course my car idles a lot better/smoother in N and P than it does in D or R. It's rather rough idling in D and R.
I'm hoping maybe it's a vibration issue- something like harmonic amplification- where something only rattles in a certain frequency range. I pulled up next to a brick wall, kept on the brake, went into D and got up near 1600RPM and the reflected noise does strike me more now as maybe being less a grindy noise and more of a rattly vibration.
The Bosnian shop who fixed up my exhaust were too quick to dismiss the noises i heard after they worked on it. I think maybe something is loose. I hope. (I could feel air leaving the flexpipe's woven area itself but don't know if this is normal.)
Going up hills increases the likelihood of the noise appearing (so i take this to be suggestive that it IS the transmission).
However on a flat road if i hit the gas to quickly get up to 1600RPM before I'm any where near auto shifting out of 1st gear, the noise also usually appears (so i take this to be suggestive that this is not the transmission). I've also gotten the noise to not appear until well into 2nd gear.
The fairly-repeatable noise appearing in the 1600RPM zone regardless of my gear position gives me some hope that the xmission is not the source of the noise. So on balance, i think there's some indication it's the transmission, but there's also evidence that the source is other than the transmission.
The noise does not occur in Neutral or Park while revving up to 1600RPM. But then too, the engine, exhaust and vibrations always seem considerably less in N or P, as opposed to being in Drive (or Reverse). Why my Camry is quieter and more smooth in N and P as opposed to D or R? In the latter two modes, i imagine the transmission is engaged? And that the transmission is unengaged in P and N? And would that make the car louder or vibrate more, at least under certain conditions? Is the engine under less load in P and N?
And are noises at certain RPMs in D or R, but not in P or N indicative of Transmission problems? I notice the shop overfilled the transmission fluid every time i've had it changed.
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When I put on the emergency brake, the brake pedal or when I put the car in park or take it out of park and put it in D, it makes a "chuck chuck chuck" sound, not high pitched, but not a low sound either. It seems to be coming from under the hood on the left side. It sounds something like a belt slipping or a pump with a squeak maybe?
It does not appear to make this noise when simply depressing the brake while driving, so I'm not sure it's the same abs actuator issue.
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My wife was driving this morning and the car stalled when she was accelerating from a stop light. Battery light came on and she could not restart the car no power. When I got there she was able to start the car again. I drove 10 feet when the car stalled again. Noticed that the EPC came on smelled rotten eggs or sulfur from the exhaust.
Used jump cables and car started, battery light gone but EPC light came on and stays on, no blinking. I drove back home about 13 miles and no problem. Took battery to test and did not hold charge, I will replace battery. Car was at the dealer for two weeks to get the CAM, cam follower and high p fuel pump replace. Is just a battery issue or another issue for the EPC light?
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I noticed while driving my car there was a unusual rumble or grinding sound coming from my drivers side front wheel well. I get out and look I see a bunch of Fluid all over my wheel well. I look around turn my wheel around and see this fluids all on my rotors and suspension. Ive noticed couple weeks back the boots on the struts were ripped in two pieces from deteriorating or dry rotting (this was on both sides) and ive also been hearing some odd squeaking sound for over 15k miles every once in a while going over big bumps or train tracks. Struts go out at only 80k miles on their corolla? Yeah struts do usually lose their life around 60-80k miles but I've never seen them leak around that many miles. Is this a common issue?
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My car just started making a grinding noise when accelerating. It does not make it while maintaining a constant speed or revving the engine in neutral. I never had this problem before and I am at a loss to explain it. Car is 1995 Camry for what that is worth.
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I drive a 2001 Chevy Prizm with 90,000 miles on it. Lately, when I'm accelerating over about 30 to 40 mph, my engine starts to make a grinding noise, that gets worse the faster I go, or the more pressure I apply. The noise also happens when I'm going up hill. What's causing this noise, so I don't look like an idiot when I take it in to my mechanic?
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Just started the other day. Ecuador codes at p030p035p0411. The noise only happens while accelerating past 10% throttle in any gear.
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My 2007 Hyundai Elantra SE (Automatic, 69,400 miles) makes a grinding noise when I start to accelerate from 40 mph. I sometimes hear a noise that sounds like an airplane wheel being activated when I'm driving at lower speeds driving around town. Could this be the transmission? Who should I take the car to?
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