Prius (2010-12) :: Cyclical Engine Noise Every One To Two Seconds
Jul 2, 2010
I have a new 2010 Prius so am getting used to a different driving experience. One thing I have noticed is that between 55-65 miles per hour I hear a cyclical engine noise every one to two seconds. It is a hum followed by another hum. The noise is not constant but has a one or two second delay between hums. But this cycle is constant between these two speeds. Is this a normal engine sound? If so, why do I notice it only between about 55-65 miles per hour? A technician at a Toyota dealership told me that the 2010 Prius has 26 onboard computers to detect any problems. He said that if there was an issue a red triangle would appear on the display to alert me to any type of problem. I am about to make a 3,000 mile round trip in the Prius and need to know if this cyclical engine noise is cause for concern or just a normal part of the electric/gas engines operation.
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My wife's car is a 2010 Camry XLE, 4 cyl/AT,which we bought new and like very much. It gets stellar fuel economy at highway speeds (35 MPG is not unusual if terrain is flat).
It has 52K miles (all the kids live at least 400 miles away...) and I've been bugged by a "whump whump whump" noise from the right rear for about 5K miles. I thought it was an alignment/tire issue (tires have 25K miles, OEM crap tires wore out w/ 26K miles). So.... I had it aligned, though it wasn't terribly out of spec. I had the tires rotated (to see if the noise would move to a different corner of the car to id or eliminate a tire problem) and I'm still getting a cyclical noise from the rear right.
At low speeds it's very noticeable and gets lost in the road noise at higher speeds.
I had an identical problem with a Maxima several years ago and hub/bearing assembly fixed it. Is there something I'm missing? Or, is the consensus a wheel bearing/hub assembly.
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How do you warm up? I turn it on and it might start the engine for a few seconds then shut off... How do I know it's ready and warm?
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Sometimes I have to park my car two blocks away in the afternoon, and later in the evening i need to park my car back to the spots in front of my apartment.
EV mode won't be enough to last the two blocks, even at 7 bars. Or sometimes the car won't let me turn on EV mode, even at 7 bars (battery too cold).
So the engine must run if i want to park my car back near my apartment. But the two block distance will not suffice to completely warm up the engine
So the next morning... (20~ Fahrenheit)
My car knocks for a few seconds the next morning the car starts up...
What is the definition of completing the warm up cycle? 120F? My car will turn off the engine after coolant temp reaches 120F (ECO mode).
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I've had my 2014 Prius II for about a month now and am really happy with the car. I do however have a question. Every time I go the garage and open the driver's door to get in the car, I hear a servo-like noise under the hood lasting for a few seconds. probably 5-6.
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I have a Hyundai Elantra Limited 2012. A few months ago the Short Block was replaced because the engine was noisy. Now it started to do that noise, if I remember it's a little bit similar : Youtube video: [URL] .... Or search youtube for: Hyundai elantra 2012 engine rattle noise
It rattled very loud for 1 or 2 seconds on a cold start the other day too. Noise appears to be coming from the engine. It does it pretty much all the time, at idling, when I accelerate it accelerates too and when I slow down it kinds of do too slowly. Need another new short block or is it something else like the timing chain or a bearing?
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After stepping over gas pedal revving up, when I release the gas pedal I can hear the engine revving up some more instead of slowing down.
When I release the pedal, the engine is still making the noise as if I am stepping on the gas harder for about 3 seconds. when this happened, EV mode will be always not available, and gasoline consumption is increased. Getting lower MPG.
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I have noticed a very mild cyclical humming noise at exactly 70 mph. Initially I thought it was the original Bridgestones but it continued after I had a new set of Michelin PSS mounted. The noise can only be heard if the car is on a smooth road and the radio and AC are off. I was wondering if it may be a wheel bearing or issue with the differential. Not sure. Its not a big deal but would like to get to the bottom of it if possible.
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My 2006 Prius makes this noise - like a groaning sound for about 5 seconds - when I shutdown the engine. Always happens when I am NOT at the dealership. Generally happens when the engine is hot. What this might be?
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2001 Prius. Within 15 seconds of starting the engine, I captured the screeching sound from the engine bay. Noise went away after about 20 seconds. New serpentine belt and new 12v battery installed. Pass dealer 27-point check. Transmission fluid, inverter fluid, high voltage battery were replaced about 18,000 miles ago. Current mileage 174,000.
Noise is not from the serpentine belt. I attached a mp3 file of the sound. "2001 Prius Noise.MP3" ..... Which component is making this noise?
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It was -35 degrees Celsius (-31 Fahrenheit) this morning. My Prius v was parked in the driveway. When I started my car the engine produced a grinding sound. The sound lasted between 30 seconds to a minute, then it went away. I was able to capture this in a video:
I have an inclined driveway, I'm not sure if this matters or not.
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Recently, when I start the engine (cold or even warm starts) I hear a subtle knocking noise that doesn't last too long but a few seconds. I figured that maybe it's because our area may still be using winter mix gasoline... but I'm not sure. Also, there's a rattle underneath the car when the engine switches into generating electricity with MG1.
This only happens after a start-up procedure (cold or warm). It stops when I push the gas pedal down a little bit (while still in park) then it goes into charging again, and by that time, it's stopped. I figured it may be a heat shield on the exhaust. It sounds more up in the front.
Also, when I start the car, the engine starts smoothly but then 1-2 seconds later goes into spinning MG1 which makes the car kinda sound like "vrrrrrrr---VRRRRRRRRrrrrrrrrrr...." .
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I definitely thought this was because my fob batteries were low, because 2010 Prius started beeping three beeps while driving last week, but while parked in the garage (OFF), with both fobs very far away from the car, it's beeping three beeps every 20 seconds. I even locked it using the fob, and it's still beeping every 20 seconds.
I've got two new fob batteries on order, but I worry the 12v is working overtime. What else could it be??? My sister's 2009 Prius is also parked in the driveway..
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I have a 2013 elantra with about 26,000 miles on it. I usually don't use it on weekends and on Monday's it makes a noise that lasts about 3 seconds. I believe the noise comes from a pulley that is not turning.
When this first happened, pulley had a couple of lines where paint peeled off and now the pulley has almost no black paint left. Took the car to dealer, explained how the noise only happens after not using the car for a couple of days, and they have not been able to repeat the problem, they indicate that they can't replace the pulley for this reason and that the wear on the pulley is normal.
What is causing the issue?
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What is that little noise coming from the engine bay when you unlock and open the drivers door?
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On my 2010 Prius ll when the engine kicks in, is it normal for the engine to sound noisy, almost like a diesel. It's embarrassing because the car is noted for bring quiet. Is it not? It was like that when I got it, and I took it back and they checked it out, but apparently they thought it was ok. I'm thinking of taking it back again. Just a little over 4000 miles on it.
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There is a chirping sound coming from the engine of my 2010 Prius. It sounds like a really fast bird chirping and my guess is its probably the serpentine belt. It is there as soon as I start car and the engine is running. 80k miles.
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At first it was leaking coolant very slowly,then making the rattling engine noise at low rpm then a part flew off while on the highway gushing out oil. Time for a new used engine. Planning on diy if all else fails off the junker. 230,000 miles on odo.
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When I unlock my car using the fob key, it automatically locks again after around 30 seconds. Is this a common thing and can it be changed?
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My 2010 prius began having gas tank filling issues a week or two ago. When filling, it clicks off every few seconds. Pulling the nozzle out further doesn't work. Now, today, my check engine light is on.
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I bought a used Certified Prius with 49k miles on it. I noticed when accelerating (and the display shows that I am using the ICE but not so much that it shoots up into the "Power" portion on the far right) that the there is a clicking noise coming from the front passenger side of the car.
It sounds very much like this:
I don't hear it when only the electric motor is running, and I don't hear it when I really punch it and the power meter is completely filled up. Its more when the power meter is in the middle of the display and the ICE kicks in and I am slowly accelerating.
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