Toyota - Rav4 :: 2011 - Fluttering Noise Coming From Engine Compartment

I have a 2011 RAV4 with 122,000 miles. For the last few months I have heard a fluttering noise coming from the engine compartment, usually at in-town speeds when I step on the accelerator gently, for example to maintain speed on an incline.What could this be?

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Toyota - RAV4 :: Medium Pitched Whirring Noise From Passenger Side Of Engine Compartment

So my girlfriends Toyota RAV4 (2005) is making a medium pitched whirring noise from the passenger side of the engine compartment. (Same area where the serpentine belt and the alternator and all those goods are located.) The battery warning light is on, solid. I have not had a chance to take my DMM and check voltage but I suspect this is going to be a bad alternator since it is a noise consistent with the RPM of the vehicle and visual inspection of the belt is that it is still in one piece, not frayed, flexible, etc. I didn't rev the engine because I didn't want to freak her (the gf) out. My plan is to test voltage before she does anything rash like take it to the dealership which she is already planning on doing but the noise concerns me since noises tend to come from things that move which is probably an indication of some sort of mechanical failure and that tends to cost money. Luckily it's her car.

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Toyota - Rav4 :: 2008 - Constant Squeaking Noise Coming From Front End

I just had new pads and rotors puton and I have a constant squeaking noise coming from the front end where the parts were put.

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Toyota - 4runner :: 2007 - Low Rumbling Noise Coming From The Engine Compartment

So, I have 100K miles on a 2007 4Runner (V6) and after having my radiator flushed at the Toyota dealership service dept, I get my car back and now hear a low rumbling noise coming from the engine compartment. I hear this noise every time I turn on the air conditioner, and sometimes even when it's off.

I took my car to Toyota today and after getting the service advisor to acknowledge the noise, I get a call 2 hours later saying, a) that no noise was identified by the technician; b) nothing wrong with my car; and c) I can come pick it up.

It ain't my imagination. Clearly, something is wrong. What it is? Should I take it to another service department? This kind of thing makes me crazy!

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Toyota - Sienna :: 1999 - Whirring Noise Coming From Center Engine Compartment?

I own a 1999 Toyota sienna that has 112,000 miles. For the past few months there has been a whirring noise that seems to be coming from the center engine compartment. It started quietly and now has increased in volume. It reminds me of a speedometer cable that is beginning to fail. I have taken it to my trusted mechanic for a diagnosis and he thought it was metal on metal noise from the transmission. I have owned cars for 40 plus years and have'nt heard of this type of tranny noise. What could be causing this? It makes this noise under power and when I release the accelerator the noise almost disappears. Also there is a clunking noise coming from the passenger front wheel after releasing the brake pedal when I come to a stop. I have replaced the strut,ball joint,and lower control arm bushing trying to remedy this. I cannot find anything else that is loose.

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Toyota - Rav4 :: 2006 - Loud Noise Coming From Rear Side

I have a 2006 Rav4 and every time I drive my car after it's been sitting for a while there is a very loud noise coming from the rear of the car, the noise usually lasts about 10 to 20 seconds and only happens when I press on the accelerator, and is always when I go forward, never in reverse. The noise is usually louder when it is humid or it is raining.

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Toyota - Rav4 :: 1999 - Knocking Noise From Front Passenger Wheel While Accelerating Around Corners

A couple weeks ago I started noticing a knocking noise coming from my front passenger wheel. It only happens in drive, while accelerating around corners. I checked the CV joints, all are fine, no cracked boots, moved the boots around and can hear the grease in there and no sign of a leak. The strut boot has broken however. Im thinking bad strut bearings? Since the boot is pretty much non existent it might be corrosion build up?

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Toyota - RAV4 :: 2000 - Engine Noise That Only Shows Up When A/C Is On

My 2000 Rav4 has 120,000 miles on it- engine timing belt and everything with done at 60,000 miles. About a year after this work, i noticed an engine noise that only shows up when the A/C is on, or the engine is under lots of stress, and only sporadically. It sounds just like a thin metal blade being stuck in a fan- and it's very loud. It disappears immediately after I let up off the gas, and does not always reappear when I reapply the gas.

It is consistent though in that it starts close to the 3000 rpm range. I've checked for interference on anything with the belts and cooling fans, but don't see anything there. Other than the noise, engine has been working great. Also checked the motor mounts, they seem okay. The only conclusion I can draw is that something is interfering with a rotating part, maybe by the flex of the engine under stress, but I can't point a finger to anything.

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Toyota - Rav4 :: Groaning Or Grunt Noise Right After Engine Turns Over

I am hearing a really strange "groaning" or grunt noise right after the engine turns over. The colder is the louder it is. It only lasts about a second. It's only when the engine is cold.

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Prius (Gen 2) :: Noise Coming From Engine Compartment After Shut Off

I started noticing some strange sounds coming from the engine compartment after shutting off the car ( a 2007 with 90K miles). It's different from the hum for several seconds that I often hear after switching off the car. This one is a squeaky rough sound like a small motor wearing out. I think it's from the driver side of the engine compartment. Is that where the inverter pump is? This car didn't have any record of needing the inverter pump changed for the recall as far as I could tell.

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Camry :: 2003 Toyota LE - Loud Noise From Inside Engine Compartment

2003 Toyota Camry LE 4 cylinder

I am experiencing a loud noise which is getting worse from inside my engine compartment. I took off the heat shield assuming it was coming from the exhaust manifold but it is not. It sounds more like it is coming from the intake manifold. Now I would assume it was the intake manifold issue that has been described in many threads but it is not a vibration or clanging sound. It just sounds like air is escaping from my intake. What baffles me is that the sound is loudest in drive. Then neutral is the next loudest, then reverse there is very little unordinary sound.

I hear it a little bit when I am going like 15-20 MPH in reverse and let off the gas to decelerate. There is a noticeable noise increase just at idle too. I checked and all fluid levels are good. I changed the tranny fluid about a month ago and according to the dipstick it is right on where it should be. The sound is increasing and I am worried about what it may be. It sounds as if it has an exhaust leak but I do not see anything.

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Toyota - Matrix :: 2009 - Intermittent Noise From Engine Compartment When Starting

There is no problem starting the car- it always turns over immediately, but every 1 out of 7 - 10 cold starts includes a strange noise from the engine compartment. Just as I let go from the crank position, I hear a sound similar to that of playing cards being shuffled. The duration of the noise is just a second or two, just like the time it takes to shuffle once.

It never has happened when the car is still warm. I had the Toyota dealer look at it, but they couldn't reproduce the noise- not surprising, since I didn't leave the car overnight, and even if I had, it still would be unlikely to happen when needed. The noise has been happening for a year or so, and it doesn't seem to increase or decrease in frequency due to air temperature or weather.

I did have a lot of corrosion on the battery terminals last summer and had starting problems then, and had the mechanic clean the terminals and check the battery, and the battery was fine, yet the sound continues, but no further starting issues. What might be going on?

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Prius C :: 2004 - Ticking Noise Coming From The Engine Compartment

I have a 2004 Prius that has a ticking noise coming from the engine compartment It speeds up and slows down with the idle of the engine or the pressing of the accelerator. Appears to be coming from the passenger side (US). No diagnostic codes have come up.

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Camry :: 2003 - Thrumming Vibration Noise Coming From Engine Compartment

03 camry 205,000 miles. After first start when backing up, there is a thrumming vibration noise coming from the engine compartment. The noise is less when moving off in drive.

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Pontiac :: Persistent Ticking Noise Coming From Inside The Engine Compartment

I have a 2001 Pontiac Grand Am with about 160K miles on it. Over the last month or two I have noticed a persistent ticking noise coming from inside the engine compartment. It sounds like it might increase in frequency along with the engine speed. It is loudest when I pull up in a drive-thru or next to another car and roll down my window. It is audible when sitting or while moving. Doesn't seem to make a difference if the car is hot or cold. I checked the oil and it appears to be full. It sounds like it's coming directly out of the engine block itself. I get the oil changed every 3,000 miles like clockwork.

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Prius (2004-09) :: Strange Noise Coming From Engine Compartment / AC Unit

I first noticed a strange noise coming from the engine compartment a day ago. I had left the car to sit in the sun for a few hours. When I got in the A/C was set to on and the system was on auto. I tested to see if the noise went away when I turned off the A/C and it did. I turned it back on and it returned. I know the A/C operates at different speeds based upon cooling needs and that it can get sort of noisy but I didn't think that it could/should get this loud. The system seems to begin working quickly and it does seem to put out cold air. If the noise is unusual do you think that it indicates another underlying problem in the A/C system?

Just to clarify, the ICE is not running in the video. The cabin fan is set to low and the temperature is set to low. The person in the car presses the A/C button and the cooling fans in the engine compartment come on as well as the A/C unit. The sound gets louder a few seconds in. Here is the link to the recording I made of the sound.

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Prius (2010-12) :: Noise From The Front Right Of The Engine Compartment Area

I have a 2013 Prius II with 35,000 miles we bought certified used from a dealer 1 year ago. When I turn the AC on, there is sometimes a louder than normal noise from the front right of the engine compartment area. Not right near the surface - seems to be coming from a little deeper in the engine compartment. If it is present, it starts when AC is turned on and stops a half second after the AC is turned off. Can't get it to repeat for dealer service tech yet (of course). I recorded the sound and played it for the tech who told me to check pink coolant levels in both reservoirs and then bring in to dealer. Thought it could be a dry or malfunctioning pump of some kind? Today I smelled a slight burning smell when the AC was turned on. No check engine light, AC seems to be working fine. My wife thinks the noise may have also been there when the heat was turned on but I cannot verify.

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Corolla / Matrix 2009-13 :: Rattling Noise Coming From Engine Compartment When Drive At 60+ Mph

I have a 2009 Toyota Matrix S. There is a rattling noise coming from my engine compartment whenever i drive 60+ mph. It sounds like it's metal on metal. Nothing is loose inside. I took it to the dealer and they told me the water pump bearings were bad and replaced my whole water pump. That didn't resolve my problem. The rattling is still there.

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Prius (Gen 2) :: 2007 Whirling / Vibration Noise Coming From Engine Compartment (with Audio)

I would describe the noise as a whirling/vibration sound that can be heard as soon as the gas engine portion of the car kicks in (even in park) but gets louder and more noticeable as the car is in motion, especially at highway speeds (55 - 65mph). Opening the hood and listening to the engine block, the noise is definitely coming from around the area of the silver-covered portion by the driver's-side, which I believe is the hybrid synergy engine. The noise has gotten to the point where I really get bothered by it driving anywhere, and I have to turn up the radio to try to drown out the noise.

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