Prius (2004-09) :: Noise At 27 - 28 MPH
Oct 6, 2015
2006 Prius, 115,000 Miles, Start battery just replaced after 9 years, drive battery original. Noticed a new noise, like a chirping noise, similar to the brake noise when you press the brake peddle hard and they chirp. Was told this is normal and was some pump noise.
This moving noise appears at 27-28 MPH. It appears generally on almost flat roads. It appears with the engine is running @ 1184 RPM + or -, 0 RPM when the electric motor is moving the Prius/Gas engine off, cruise control on or off.
Appears to be coming from the front of the car. I thought it might be a nail in the tires, or wheel bearings, but no nails are found and the tries are balanced and rotated every 5,000 Miles.
Just had a Toyota mechanic take a ride, and he thought it sounds like the HV system trying to maintain the speed, sort of adding and reducing tork. At least that was what I gathered from his comments, but said its safe to drive. Another noise, like engine noises associated with the Prius that we all have accepted as part of this type Hybrid system.
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Two things I have just noticed on my '09 with aprox. 120,000 miles.
Starting at about 45 mph, I am getting a humming noise
Doesn't get louder as speed goes up either, stays the same 45-75 mph
Have Bridgestone Ecopia EP422 tires, did rotation, noise did not change location
Noise does go away gradually when slowing down to a stop (after I have reached 45)
I am deaf on my left side, this is hard to tell where it is coming from
Second is this really odd brake pedal clink / pop noise. When brake pedal is depressed fully to the floor, car ON or OFF, there is a clunk
See attached links to the noise.....
Brake pads / rotors are like new, plenty of life on them. I did have the inverter pump replaced per the recall (I read somewhere this could be related?)
Car OFF -
Car ON -
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Dealership says engine knocking means I need a new engine. I have put 3000 miles since last dealership visit. No change in engine. Could this be a catalytic converter or other problem? Do not hear the noise at 70 mph only at 0-40 mph.
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I believe this is where the noise is coming from. I get a delayed tap noise when I hit the brakes. If I lift my foot off the brake and hit it again I might not get the noise. It seems forward momentum is need to "reset" whatever is making the noise.
Also.... Right turns at 25 mphs I can hear a rhythmic woob woob woob.
Accept for the tap noise the woob woob woob is hard to hear unless I have a passenger, more so if the passenger is in the rear.
I can't run this Prius into a dealer like I can in the states. I've had this Prius in the Republic of Panama since 2007. They just started selling IV models. This is possibly the 1st Prius in Panama
I had the pads replaced about 25,000 miles ago. There's 106,000 miles on the car.
I step on the rear bumper and bounce the car. The suspension sees stiff/normal. I don't hear any that might be loose.
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I loved my 2009 Prius until this weekend. I just turned over 31,000 miles and now a loud humming noise has developed under the hood while driving. It has not been cold here and this doesn't start until I reach around 24 mph. It remains while the gas engine is running or I'm coasting with the engine off. The humming is there in D or in N and there no sound while turning. When I am under 24 mph the noise is gone. I have set up an appointment with my Toyota dealer for this week, but wanted to know ahead of time if any other Prius owners have had this issue.
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I bought a 2007 Prius with 198,000 miles on it. Since then I've got it up to 200,000 ish. The previous owners took very good care of it, and did not encountered any severe issues.
I recently took it in to a toyota dealership for the free inspection, and they said it was in remarkably good shape. I asked about the engine noise, and they took it for a drive and said everything sounded pretty normal, at least compared to the prius with 130,000 miles on it that they had apparently just serviced before me. I went ahead and lifted up the hood, set my phone recording at the front of the car, and started it. I let it run for a few seconds, then shut it off.
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So after doing some troubleshooting and researching in trying to find out on my 87K 2008 Prius Std "Noise in the engine while accelerating", "Approximately 10% reduction in fuel efficiency, due to lack of power from engine" & "Glide seems to be degrading over time", here is what I have observed.
1) When I push the gas when the car is parked the engine does not seem to rev in a stream, it goes up for about 3 seconds then goes down for 1 second, then again goes up and then down and this keeps happening until the gas pedal is kept press. In conventional cars the rev should be streaming continuously and proportionately to the pressure applied on gas pedal. This almost seems like a misfire, but from the drivers seat I do not hear any blasts, I have never tried this before so I don't know if Prius's are suppose to be like this. Also no Alarms on the MFD.
2) After using the 5.25 oz fuel injector cleaner in back to back half tanks I saw the engine regaining power and hence bettering the fuel efficiency. Does that mean I should get a Fuel Injector cleaning done by Toyota?
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2004 Prius base
191K miles
There is a squeaking (for lack of a better term) noise from behind the dash..
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So recently (since Thursday morning last week) I noticed the exhaust noise of my prius has been louder. Today I experimented a bit and I'm pretty sure it's exhaust related. The car is pretty loud if there is any load on the engine, although still mostly quiet if it's idling. There are no errors presenting and mileage is still great.
Otherwise, it's loud and resonates at a few different rpm points, and I found that when the engine spins under breaking (foot-off coasting over 42mph or in B mode) it also makes noticeable exhaust noise of the same type.
I'm guessing the exhaust is leaking (the sound seems to be coming almost from the left rear seat area? Behind me when I'm driving at least).
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120K (64 by me & 56 by prior owner during first 6 1/2 yrs) I was having a groaning noise when going around corners especially when headed down hill and hitting the brakes at the same time. I also had a rattle or popping going over bumps. I couldn't isolate the noise and nothing felt loose in the front end when I jacked it up. The dealer said the lower control arm bushings and ball joints needed to be replaced for $1545. I asked about front struts and was told that the control arm bushing and ball joints had to be replaced first before the struts could be examined.
I replaced the control arm assemblies (had to lower front cross member while supporting engine w/large jack and removing lower engine dog bone), ball joints, stabilizer bars and stabilizer bushings myself. Ball joints required removing axles and steering knuckle assembly to remove metal CV dust shield on back side of steering knuckle. (will post procedure later). Had lined up and the noise changed (groaning on corners left and rattle became pronounced on all bumps like the front end was about to fall out). By the way no cracks or excessive wear on any of the rubber components as I have always seen on the Subaru and other cars I had.
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However, our other 04 that we still have is starting to make a not so nice cracking (only way I can describe it) noise when turning the wheel while dipping into a dip. Or even while turning into our driveway before we go up it. Somewhere I heard the steering rack, which can cost over $2,000 (supposedly)
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2008 Touring model. When I encounter relatively small bumps, like, sealant over cracks on asphalt pavement, expansion joints, etc. there is a bumping noise from the front, seemingly the left, which I can feel through the steering wheel. The car handles and rides fine thus I am suspicious that it is a shock/strut issue, but I take note replacement is recommended at 60K miles. Mine has almost 120K.
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Quick back story, bought the car a year ago, seller told me it was in an accident and the radiator was replaced. He let me know that the discharge AC hose was missing and that the other hose was disconnected. I also noticed that the low pressure cap is missing. I recently ordered and installed the discharge hose with the intention of filling the system later.
I have always noticed a noise/vibration coming from the passenger side when braking at low speeds. I havent noticed at higher speeds but maybe there is more road noise. The best I can describe the noise is that is sounds like a compressor running. I have a hunch it's the AC compressor and might be related to the regenerative braking, but I am no expert.
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My Prius has developed a disturbing noise over the past 2 weeks. I believe the noise is coming from the front, driver's side. The faster I go, the louder the noise. It begins shortly after accelerating and doesn't stop until I stop the car.
I didn't think it was a mechanical noise, but now I'm not sure. I feel a slight vibration in the accelerator pedal while the car is making the noise. I'm wondering if this is something in the axle, wheel bearing, transmission, or what.
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Basically I have two problems which will be looked at by Toyota on Friday. But I need to arm myself with ammunition in case I have a debate with the service/repair guy.
Firstly my gen 2 decided not to start for about 10 minutes and gave me the red triangle with an exclamation mark before everything went back to normal again. The car starts every time now but the triangle appears briefly at the start which I don't think was there before. Could this be the 12V battery?
Another thing is grinding noise on full lock to both left and right. What could this be?
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I have a 2007 with 87000 miles on it. Over the past two months, it's developed a clicking noise from the rear of the car. At first I thought it was a loose hatch, but it seems to be shutting snugly. It only happens on slight bumps and not on actual potholes. It sounds exactly like the sway bar links on my old volvo would sound when they were going (which was often), but there are no sway bars on the prius. A suspension noise doesn't surprise me after the winter. The other odd thing is that it occasionally disappears completely for a day or two.
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I have a 2008 Toyota Prius with 23k mileage. Whenever I drive over 30mph, I get a noise that comes from the front of the car. The noise gets louder as I drive faster. I just got the tires replaced, and that did not resolve the issue. I want to know what the problem is? Is it normal for Prius's to make this noise?
I just went to my mechanic and he told me that its the front wheel bearings. Can that possibly be the problem with my car.
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My Prius makes a noise (maybe a pump noise?) after shutting down car. I shut down and it makes the noise as I'm getting out - it lasts maybe 5-10 seconds. It sounds like a pump is running and a bearing is going bad. Attached, zipped video is about 1.5MB, 10sec long.
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Just picked up a 05 with 99500 on it. Drives fantastic and previous to this I used to have an 05 way back that I drove new to 64k. Anyway I test drove it in the rain and with chatter between my wife and I with the sales rep I didn't notice it but now I found that there is a whining noise coming from the timing chain area of the motor. Its only when the car is on and it gets louder as you go towards the passenger side and away from the hybrid components. Here is the sound from my iphone near the motor.
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2004 Prius with 109,000 miles. It's been in an accident before (and you can tell, the front right fender is a bit misaligned and the doors have a paint covering abrasions).
However, the car is making a ticking noise every minutes or so. The sound is originating in the Hybrid Synergy Drive converter inverter box and about every minute for about 5 or 7 seconds or so there will be a ticking or clicking noise. This happens when the car is idling, driving, and even a minute or two after car was shut off. The mechanic next door to the dealer didn't know what it is and the dealer is giving me a 30 day. What could this clicking be?
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I have a big red triangle on the pump is making noises not loud noises sounds like it's operating correctly there is no turbulence in reservoir and when I squeeze the hose the level in the reservoir goes up-and-down which leads me to believe there is no blockage in the pipe coming out of out of the pump.
My handheld scanner and torque on my android tablet only gave me my oxygen sensor code which I know about and I'm going to replace when the weather gets hot I am wondering if the coolant pump would throw a code that these devices would be able to pick up or do I need to go to the dealer or find a shop which is capable of reading the HYbrid codes?
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