Prius (2004-09) :: Super Loud Whine From Engine Bay For About 10 Minutes
Jan 23, 2014
Yesterday while on an 50 mile I had much more serious whine from the engine bay for about 10 minutes, that I think was from the serpentine belt. I wasn't driving, but my driver (my gf) called and I could certianly hear it on the phone. I could hear it in the cabin, then I could hear it from outside the car. She opened the hood and said it seemed to be coming from the passenger side down by the firewall, engine side. I could hear it while driving and while she was parked and idling.
I'm not familiar with the prius engine bay yet but that area is where the fan belt is i'm guessing if its like my other fwd cars.
It was cold out. She was driving about 55 mph. She had already driven 45 miles when it started. It continued to whine like that while parked and idling, and also while driving. She started and stopped the car and it would start when the car was started. I'm sure she had the heat on the whole time so i can't tell you if it quit when the engine cut out, but i bet it would have.
Then after about 10 minutes it stopped. It started a little bit at start up and then went away. She drove home 50 miles and didn't notice it anymore. I drove it last night in 12 degree city/suburban driving/ highway for 50 miles and never had it come back.
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My wife has said that yesterday morning (and also a couple of weeks ago), she started the car and a constant whine came from the engine area. It went a few minutes later while she was driving.
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For the past few months I've been hearing a loud fan-like buzzing noise coming from the passenger side of the front of the car. I don't know that much about cars, but it almost sounds like the engine is racing or something is spinning too fast. It has gotten increasingly worse, and seems especially loud at high speeds on the highway.
It is not the heating/cooling fan - the noise is present when the heating/cooling system is turned off.
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Ok so a few days ago when I was at an ATM i stopped and revved my engine, i could hear a whining sound like bee/supercharger type. It gets pretty loud when i rev the engine and you could hear it whine down as the rpm drops. Now I put it in Sport mode and on drive and when I hit the gas I could clearly hear the whining noise even in the cabin, specially when I let off the gas and let the Sport mode keep the revs up high.
Pretty sure it has done this since I bought it, but I always have music on so maybe that's why I didn't hear it til now.
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2009 Corolla S 1.8l 85K miles
I have let my wife drive my car over the last couple months because she has a much farther commute to work and needs the A/C since its a more professional job than mine.
I noticed the other day when I drove it that there was a really loud whine coming from the engine. We're both Master's students, so I'm pretty bent on not going to the stealership for anything. Would this be the belts?
Here are the videos I took: [URL] ....
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I have an 05 jetta 2.0 and I had a loud whine on passenger side of engine. I removed serpentine belt and ran engine briefly and noise was still there. Figured it was water pump or tensioner. and when I was changing timing belt, tension, and water pump I found it was the timing belt itself that was whining. It was OEM original belt with 140,000 miles on it. The belt was in very good shape no tears just used looking. Now engine is very quiet.
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My '04 4wd has a pretty loud rear end howl, it is a LS but don't think it's an LS problem, no noises or chattering when turning. Howling is loudest at 50 to 60, but some noise at all speeds. I don't mind tearing into the rear myself, but not sure if I could tell what was wrong just by looking, i suppose bad bearing might be obvious, but not sure how to diagnose gear lash tolerances. It only has 107000 mi. and is an 8.8 rear I believe.
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I own a 2007 GX470. It has suddenly developed a loud whine. We replaced the power steering fluid (which we were told was filthy) but the whine is still there. The mechanic has suggested we drive it for about 500 miles to see if the noise disappears. I'm not crazy about driving it with the loud noise but don't mind. He says the car is safe to drive.
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I have a '99 Chevy Lumina 3100 V6 with 54k miles. There is a loud, high-pitch buzzy whine that changes pitch with engine RPM/transmission speed. The whining noise is only evident while the car is accelerating (forward or reverse), and above 5 mph. I removed the serpentine belt and drove it briefly (500 feet) - the noise is still there without the belt. I figure it's safe to assume it's not the power steering pump, alternator, H20 pump, idler or belt tensioner. The transmission has had regular service, and shifts smoothly in all gears (fluid is clean and level is full). There is only a slight raspy "scraping" noise in park or neutral, which becomes almost undetectable when shifting to drive or reverse with the brake still applied.
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i have an 04 f-150 with a 5.4 motor. about 2000 miles ago the power steering pump started to whine really loud. I sucked out the power steering fluid and started it up and the fluid that back into the tank looked like it was gritty and rusty. I replaced it out a few times and no change. I then did the job of replacing the power steering pump which was about a 5 hour job.
It was quiet for about 5 miles and the new one started whining. Every week I have been sucking out the old fluid and replacing it and it still seems to be gritty. What could I do to quiet it down? the steering works perfect btw. I am looking at selling this truck and buying an 09 or newer ford and want to quiet it down before selling it. The truck has 88,000 miles on it and i am the original owner.
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Last night around 1:00, I was awakened by a noise I think was coming from my car parked below my window. It was plugged in at the time. I heard a loud, high pitched whine, followed by a couple of knocks or thumps, then a sound like R2D2 makes when he turns his head, then a couple more knocks, and another R2D2 noise. I think I may also have seen lights flashing around the the edges of my blackout blinds, but am not sure, since I had just been sound asleep.
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I have the 3.5 LX AWD 2004 Santa Fe 102,000 miles purchased new. My power steering fluid reservoir was leaking from the top a lot. I read here that the screen in it could be clogged. I went to the garage the manager never heard of such a thing he said, and never heard of a PS reservoir having a screen (I gave him the TS. He said if I got the part and wanted it changed they would change it. I did that. It was done 2 weeks ago and now it all dry under there. But, now.. there is a low whine on the passenger side under the hood toward the back, but when I put the A/C on or the heater on defrost (Not when heater is on, only in defrost) there is a loud rumble/hum from the same area. Shut A/C or defroster it goes back to a low buzz/hum again.
I had the power steering pump replaced at the dealer about 2 years ago, its not old. The noise is NOT any louder when I crank the steering wheel all the way to either side. The fluid since replacing the Power steering fluid reservoir is staying at the same level, full, no leaking. When I put everything on, lights heat only (No defroster), radio, lights the noise doesn't get any louder either, I tested that. The other night after driving about a half hour to and from a place I went to u-turn in a parking lot and that whine was louder for a minute and while driving forward slowly out of the parking lot getting up to speed.
When I asked about the PS fluid reservoir, I had also, asked the repair shop manager his opinion, of that loud hum/rumble when I put the A/C on (At the time I thought it only happened with the A/C when the compress popped on). He listened said "That's the A/C compressor it's going and its going and cost more to replace it then its worth on your 2004." So, that's the background.
Questions: 1. Just wondering if you think it is the A/C compressor that is the loud noise when on, would the A/C compressor even go on when the defroster is on, the A/C is off, and the heat on and there for still make that loud rumble??? Or does that defroster fact kind of mean its not the A/C compressor??
2. What is your opinion of the low buzz/whine noise now (When heat/AC off)? I can't pin point it totally in park when listening, its very low (Except that one point where it was loud for a few minutes driving out of the parking lot.) (The motor sounds a bit louder in it in front too just side observation)
I almost worried if the low buzz was the Transmission as its fluid hasn't been changed in a few years (Because the mechanic said sometimes changing the fluid when its been a lot of miles between can actually cause problems to the transmission) It was done at the dealer around 45,000 miles and now my Santa Fe has 102,000 miles.
Could the power steering pump be going bad in only 2 years from what I've described? Or could the PS fluid reservoir having been spitting PS fluid from the top for a couple of weeks have caused damage to the PS pump now?
The fluid never got lower then full when it was coming out of the top and only when driving, I kept checking it. The mechanic who put the PS fluid reservoir in said he had no idea if it leaked from the top due to the screen as he felt the screen had only minor debris that was not blocking a lot of the screen since its a big screen (He didn't look too hard though), and it was possible even a small crack in the reservoir could cause that same fluid coming out at the top. He said it could be either he didn't notice a crack either.
Or are these two noises possibly not related even though possibly from the same area on the passenger side under hood.
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Slowed down to turn a corner and the strangest, loudest, noise - a loud screaming whine that lastest like 5 seconds. Also perhaps a spin noise and a little bit of a thump like going back in gear. Went out to drive it again, and again it did it but only once. I then drove it hard, fast and slow, in 4 wheel drive, out of 4 wheel drive, stop and go and it has not done it again.
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You know the ticking noise that is normal for our engines? Well, below 25 degrees F, it is the most worst noise ever. It sounds like the valve train is going to explode. Just keep in mind I've driven many cars. The ticking noise shouldn't be outrageously loud.
But my main problem that is worrying me is this WHOMP-WHOMP-WHOMP noise. The higher the RPM the faster the noise. Doesn't matter if the car is moving or not and I know it's coming from the engine. I hope it's not related to the loud ticking. It only happens for approximately 5 minutes. After that, there's no WHOMP sound and the ticking goes back to normal sound levels.
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@75000 miles my first check engine light. Here are my symptoms......
~After i shut the car off the fan keeps on blowing at a very high rate as if the car is over heating, its currently 45-50 degrees.
~On cold morning when i start the car up and turn the steering wheel I hear a very loud whining sound, but after driving for about 20 min and the car has warmed up the sound goes away.
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We bought a 2006 Prius for my college student son to drive with a engine noise. It runs fine but has a loud tapping on the top of the engine. We decided to do a whole engine swap due to the mileage on the original car.
We got a engine with 80xxx miles on it and are beginning the swap in the morning. I have read a few threads on swaps and are trying to make like a checklist of things to disconnect etc to make sure we don't damage any wires or other components on removal.
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Yesterday afternoon after warming up (car still in park) the engine shut down was very rough. I heard a quick string of maybe 5 or 8 loud bangs under the hood. Sounds like something got loose and banging inside the engine compartment and ready to fall off at any moment. This morning it was just a bit rough but not nearly as scary. Other than that the car seems to work fine.
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i started my '04 prius (~110k miles) this morning, went back into the house to grab a few things, & then I started hearing a loud rattling sound from the engine for a few seconds before the engine died.
The dash and MFD lite up with these symbols in the attached images.
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To make a long story short, after replacing the timing chains, guides, and tensioners, the right side cylinder head began running very loud. Think of the usual chatter associated with these engines and multiply it. It was constant, from start up to shut down, and it increased with rpm. Thought at first it may be caused by debris in the oil clogging the lifter(s). After changing the oil multiple times along with different additives and driving roughly 600 miles, the noise persisted. Taking a look down the oil filler tube with a flashlight and with the engine running, the head looked dry. Safe to say at this point I was starving the head of oil.
Removed the valve cover. Removed the rearmost camshaft cap. Sure enough, the oil passage was completely blocked. Inspected everything and there was signs of running dry (minor discoloration, dried oil spots... but no real damage and no play anywhere. Put it all back together and the truck runs quieter than the day a bought it.
Here's the camshaft cap:
This is exactly what it looked like after removal. The material blocking the passage is hard and bridle like plastic.
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