Prius (2010-12) :: Rattling Noise In The Rear Increase With Speed
May 13, 2016
Once in awhile, as in maybe once a month or every few thousand miles, I hear a rattling noise in the rear below the car. It is very audible and everyone in the car notice it.
This happen only when I have been in traffic for awhile during which:
1) when battery is running really low from moving at low speed
2) After which the engine is turned on to charge the battery
3) moving low speed with the engine running.
The vibrating noise increases as my speed increase, getting more audible and vibrating faster. After a certain point (maybe 30 mph) the noise stopped.
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I wanted to know that at the moment my prius does not automatically locks the doors when reaching above 20km/hr as its suppose to.
I went through the manual and tried to turn the power button on and pushing the gear in N and pressing the lock button but it didn't work.
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Is it my wheel bearing, rotors or brake pads?
How do I describe it... well it has this squealing noise and it's proportional to my speed.
Heard this while I had my windows rolled down.
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At idle (car is parked, no load on the engine) the engine runs at about 650 RPM. When I tap the gas - it reacts OK. Engine quickly speeds up.
However, when I want to gently, slowly increase the engine speed - say I want to reach 1000 RPM - it will not respond until a moment when it jumps up to 2500 RPM. Then it might decrease a little, but it is almost impossible to set it at 1000 RPM. I even tried to move the gas pedal with my hand.
It is Elantra HD (2009) with stick shift.
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Are you experience abnormal tire wear? - I'm collecting data or tire wear for the Matrix.
My car is wearing the inner most tread only front and rear tires. And I am getting tire noise that increase with speed - it's annoying to say the least.
My mechanic says this is normal - yeah right!
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About 2 months ago i was driving and heard a clicking noise that would increase the faster i drove, i 1st thought it was something in the tire. after checking my right front tire and saw nothing was there for some reason i figured it was the brake.....so my personal mechanic the next day took off the wheel i told me i had to replace the braking kit because one of the pins was rubbing on the rotor, in the mean time he pulled it to try to realign it into place.....after he did that i realized the steering wheel shuddering when braking at highway speeds....figuring since i needed the braking kit that when replaced, this new problem would b solved.....braking kit replaced problem still there....
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My Santa Fe is doing a pop sound, like a clunk, when I increase or decrease the speed. It is just one time noise every time the speed changes. Like when the "gravity center" changes from the car front to rear or vice-versa.
I notice already that doesn't happen when it's shifting, neither when I go over a speed bump.
It happens in all gears, but is more noticeable up to the 4th gear.
Also, usually I can hear this noise, a little bit lower, when I'm stopped and change the gear from P to R or vice-versa.
My Santa Fe is a 2011 model with 70K kilometres ....
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I have a 2002 GMC Sonoma, 4wd, with about 100,000 miles on it. It recently started making a new noise. When you start it up and drive it, it makes a noise that gets louder as you increase speed. At about 20-25mph, it sounds like an airplane. The noise decreases as you slow down. If you shift into neutral and rev the engine, the noise is not affected, eliminating anything in the engine. When you slow down to stop, you feel a slight sensation in the brake pedal, like the transmission downshifting (this is when you are nearly stopped), and the noise goes away. You can then drive as normal with no noise at all until after the truck is restarted and driven after being shut off and parked. Then you repeat the cycle. The truck is in 2wd when this happens.
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This bad squeaking, loose rattling and (sometimes) banging noise from the left rear started happening about a couple weeks ago. I've removed all interior panels, even the exterior bumper thinking there was something loose and nothing. I suspect as a last resort it has to be the suspension despite the car having only 17k km.
What is strange is the rattle increases in sound volume and occurs more often the longer you drive and also if temperatures get colder.
In other words, if I have the car parked in my garage overnight (slightly above 0 C) and immediately drive next morning into sub-freezing temps and on bumpy roads, you don't hear it. But after 5-10 minutes of driving, you start to hear it and gets louder and more frequent.
Searched other threads and some have reported the shock as the problem for 2010/2011 models, but none had any sound or video to compare.
The video shows how bad it is : [URL] ....
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Since I got Prius I've noticed that driving at 50mph returns 80+mpg , 90+mpg if I let it gently glide at -1mph per 1 mile. As it gradually slows down, the mileage starts to decrease. By the time I get down to 45 mph the mileage shows around 70mpg,
I get down to 40mph, I'm only getting 50mpg. When I keep my speed between 40 and 45 I get about 52-55 mpg for the day. If I keep my speed between 45 and 50, I get 55-60mpg for the day.
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I have Toyota aqua 2012 model imported from Japan mileage about 82000 Km.
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I'm sensing a light steering wheel shaking when reaching 70mph. Also during the process of increasing the speed from 25-30mph and above I can hear a sort of beating noise which becomes more consistent when increasing the speed. Car goes straight (no left - right wandering). Now I'm assuming it may be something related with the bearings, but I guess the only way to find out is by sending it to a repair shop to understand if the noise come from one or two bearings and from front or the rear bearings?!
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I'm looking at a dirt cheap Explorer 4.0, has been sitting for 2 years. Runs nice, with a double "knock" noise but quieter than a rod knock. Idles smooth at 600 rpm, "knock" is consistent, but increases as engine increases speed. Has 2 year old oil, and 2 year old gas. Would a tune up support it, and revitalize it, or is the engine almost dead. Still drives, didn't push it to hard. Interior is 9/10, exterior is 10/10. I have him down to 600. 4x4 works, and feels good.
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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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2013 Prius 3 making a squealing or rattling noise when accelerating after car is warmed up. It only does it when the car is up to temperature and when you accelerate slightly harder, like going up a hill or something. It sounds like a pulley or something squealing. It has been to the dealer and of course they couldn't duplicate the noise or see anything wrong. Not to sound funny, but it actually sounds like a hamster running on a wheel. It is very annoying. It is not a constant noise, it only happens under load. It gets louder when the ac is on as well. If you let off the accelerator when it starts the noise goes away. I don't know of it matters but our car has the forged 17" wheels on it from the factory, and the car has 8600 miles on it.
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I have a 2010 Prius 2 with 58K. A few weeks ago, mainly when turning right, my car makes a strange sound on the driver side (never on the passenger side). This noise is not very loud and almost sounds like two chains hitting. It usually makes this noise when I turn, but not every time I turn, and it usually happens when I first start driving.
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One thing that brought me here is the noise of my liftgate when being closed. When the liftgate contacts the latch it makes a rattle-y/loose sound. The trunk is locked and secure however the sound is very off-putting. I bought my 2010 Prius II as a CPO last year and never really thought much about the noise, only that it didn't sound very pretty.
However, I was recently sideswiped and was put in a 2013 Prius II and the liftgate closes with a solid thunk with no loose rattles. What could be causing this squeaky/rattle sound? I thought it could be my license plate frame since rentals typically don't use frames, but it seems really unlikely.
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I got in the car today and started it... I was waiting a few seconds for someone to get in the car (it was in the garage) and as soon as the engine kicked on there was a very very large long rattle noise i immediately turned the car off. Waited again and turned it on same noise.. the only thing I found was a cover under the car towards the front was really loose. ( I haven't hit bottom or anything while driving) but I did have the lighted door sills just installed the other day. But it never made that noise..
btw i have 1100 miles on it..I looked under it and is the black dust protector thing supposed to be loose like if I push on it I can make it rattle..
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Slightly shaking engine and rattling noise on acceleration,it happens when the car is hot and especially when the battery level is very low ,I guess is when as more load . If I accelerate and keep it steady at 20mph I can feel a constant vibration but goes away once accelerating more....like if you're driving on a rippled surface ....that is only when engine is on , doesn't happen on electric only.
The noise it sound like a tapping coming from the engine when slowly accelerating from 0 that goes away as soon I give more gas ,is annoying wile in the traffic.? Can the sparks plugs be the problem?they been changed 120k ago.....,I cleaned the egv pipe but problem still there. Like I said is only when the engine is up to running temperature.
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Noticed a weird metallic rattling noise coming from the transmission when switched to N with the engine running and the car is stationary? Almost like the gears are rattling inside while in N position. I took it to the dealer and their Prius guru said this is normal characteristic of eCVT....
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What kind of mpg increase one would see if they were to increase the tire pressures from recommended (35 F/33 R psi) to max (44 F/ 42 R). Any stats of tracked?
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