Chevrolet - Silverado1500 :: 2000 - Buzzing / Whining Sound Coming From Under The Hood
Apr 29, 2013
I recently replaced the fuel pump and afterward started noticing a buzzing/whining sound coming from under the hood. The noise goes away when I remove the vacuum line from the fuel pressure regulator and after the car has been driven for 1/2 to 1 hour. Sometimes it comes back, sometime not, but it always is there at a cold start. Had the shop take a look and they said the fuel pump is ok and recommended replacing the fuel pressure regulator. I did but that but it did not solve it. I suppose I should check the fuel pressure. 2000 Silverado 5.3L ...
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So I have a 2008 Chevy Impala LS that hasn't given me any real problems. I had some battery troubles recently that were the result of me leaving the parking/security lights on for 10 consecutive hours, but overnight-charged the battery and was good-to-go after that. But it seems like RIGHT after that was when the whining noise started.
It seems to be related to my power-steering system. I know this since the whining seems to pick up with acceleration and turning. However, I checked my power steering fluid and it did not appear to be depleted at all. I did notice, however, that it seems to be a light greenish color...which from doing a google search, I've gotten the impression that it's probably not supposed to be that color.
What exactly is going on here?
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My left headlight has been going off periodically, so to confirm that it's the bulb, tonight I switched the bulbs from left to right/right to left.
The job went very smoothly. It took me about 20 minutes, but I took my time. I buttoned everything back up and turned on the lights. Both sides came on, but I immediately noticed a very loud buzzing/whining sound coming from both headlamps. It is very loud and I know I would have noticed it before at some point over the course of the last three years that I've owned the car. Obviously, this is not normal, but I can't for the life of me figure out what I could have done wrong, if anything.
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I'm having several problems, and I'm wondering if they are related: Sometimes the heat/ac/vent blows on the windshield instead of where they are supposed to be. Occaisionally it works at first, and then changes after a few minutes to blow onto the windshield.
Sometimes I get a buzzing sound under the hood. Usually when I'm stopped, but sometimes while moving. The car idles high when this happens. If I tap the accelerator, this usually stops the noise and the idle drops to normal.
This morning, the brake warning light kept coming on while using the brake. The fluid level and pedal are OK, and the car stops OK. Then the buzzing sound came on, the engine light came on, and the brake warning light went out at the same time. The brake light hasn't come on since. The scanner tool indicates the IAC was running too fast.
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The whistling sound is fairly straightforward but there are little details that are weird.
I noticed maybe 1 or 2 weeks ago that the car would make a whistling sound, not a high pitched one but a fairly middle-high sort of tone. It would make this sound when I put the car and drive and maybe just start to gas it but NOT all of the time. By the time I am at a regular speed it has gone.
But sometimes when I slow down the sound will return and go away when the car has come to a complete stop. But this is not a constant pattern. It is on and off. Only recently could I say it has become more frequent but even then I hesitate.
Also the sound seems to definitely be coming from under the hood possibly from the back of the car but I think front may be more likely.
I read briefly on a few car/car repair forums that it could be anything from an AC compressor going out, a vacuum leak, fan belt, bad water pump, among others. I tried turning the AC on, which I have kept off for pretty much the entirety of the Summer and I heard the sound only once when I resumed driving. BUT, when I revved, the engine seemed noticeably louder; almost like it was laboring though the car drove just fine.
One other thing. Before it sounded as if the origin of the whistle was coming from the passenger side of the car. Just as of today it sounded as though it originated from the driver's side. So I'm really confused now. The car seems to drive just fine and the engine the day before sounded good if not great. I'm hoping it is nothing related to the engine.
*Few Notes:The oil was changed in June. The tires were replaced recently. Though the sound started before this. I was however driving on a really bad passenger side tire for a while.There is a short on the panel that contains the left turn signal. The bad bulb was changed and I plan to find a new panel as soon as Monday.
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I have a 2000 Chevy Silverado pickup, V8, A/C, 105,000 miles, which drives like a top.
However, about a year ago, the TWO brake lights on the dash started coming on together, randomly. Sometimes the lights came on right after I started the first time, other times, they came on later in a trip after the truck warmed up.
The brakes worked perfectly, as far as I could tell. I took the pickup to the dealer, left it 2 days, and they checked the brakes, belts, tried everything (they said) including trying to get error codes on the computer. Trouble is, the lights had mysteriously gone out and refused to come back on.
A few days later, they came back on for me!! I could turn the truck off, wait a few moments, restart it, and the lights would go off, say, 80% of the time. Only to come back on later. So, I took it to a local Goodyear Tire store (while getting new tires) and they saw the lights, did a diagnosis on a computer, and got NO codes.
Now, I'm worried very much - you see, the brakes on this truck have never been changed! I've had them checked many times, always with the answer that they are still in great shape - last time, they had 30% left! I waited until the lights were ON, and drove all the way to the dealer; parked the truck running; and waited until a technician could come out and do the computer test. NO codes.
Now, I have noticed a possible pattern: when the weather is hot, as it has been most of last year here, the lights come on; when it's cold, as it's been lately, the do NOT come on. Just today, the weather warmed up into the 70s and, zap, the lights came on today.
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I have a 2002 Accent that has this clicking sound coming from what sounds to be the left hand side under the hood. The click sounds like two marbles colliding. The car runs ok otherwise, but I would like to know about that sound.
I took a video, but its kind of hard to hear it. But if you listen close enough, you can hear it.
2002 Hyundai Accent click noise in engine - YouTube ...
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I have a 2000 Echo, Automatic, and I have a grinding sound that appears to be coming from the passenger side of the vehicle, under the hood. I had my A/C replaced, and new drive and power steering belts put in, 1,400 miles ago. I have noticed the sound is bad in park or neutral, seems to quiet down if I put it in Drive or Reverse while the engine is cool, and is particularly bad at highway speeds. I live 10 miles from my mechanic, on a highway, and am hesitant to drive it to them as it is all highway or rural roads (45 mph plus).
I drove it about 15 miles from when sound started (barely noticeable) to when I stopped and had it towed home. Belt deflection appears to be only about .3 in, manual I have calls for .43 to .51, but I may not be measuring it right....
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Over the last several days I've noticed a faint whining noise coming from the engine when I pull into the garage. Sounds similar to the noise you hear when you keep an elevator door open for too long.
This is the first turbo engine that I've had so I'm not really familiar with the sounds it may or may not produce, and whether this is normal behavior.
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This might just be car engine in general regardless of make or model, but upon a cold start, my GTI engine whines or buzzes for approximately 1 second before it stops. I had a 2009 Toyota Corolla that also did this, but I had it fixed with a TSB due to the oil not reaching the VVT-I gears or something in time. It's not the same noise in my GTI, but I was wondering about same sound almost every time upon a cold start?
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A few months ago, my car started making a loud whining/buzzing sound when I started it. The sound is distinctly coming through the speakers in the car, but turning the radio volume knob doesn't make it quieter or louder (though turning the radio completely off makes the sound stop). The sound persists until the car warms up, then the buzzing sound slowly fades away, and the voice/song on the radio slowly comes back until the buzzing sound is completely gone.
I recently took my car to a mechanic to have the timing belt and head gasket replaced, and the mechanic couldn't figure out what the problem was. What could be the root of this problem? 2006 Subaru Impreza 2.5 ...
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I'll be driving along, and when I make a relatively hard right turn, I'll hear a buzzing coming from under the hood from that point until my destination. If the car is stopped (usually about 10-20 mins) I'll start it back up and no buzzing.
I've tried pulling over and stopping/starting the car with no luck. I've shifted gears, including into park and neutral, with no luck. I"ve even tried a hard left turn (no luck)!
The buzz is not terribly loud, but rises and falls perfectly with engine RPMs. At idle it's not noticeable, but increases in pitch with the RPMs. It sounds like the engine sounds on a really cold day before it warms up. If I put it in park I can rev the engine and reproduce the same effect as when driving. It doesn't go away at a certain point i.e. I don't think it's resonance.
This is a 1998 Nissan 200SX with about 90K miles.
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I have been getting a buzzing sound under my hood, usually in cold weather that lasts a few seconds, happens after I go about 1-2 miles from my house, did online research and it might be my IAC valve getting internally dirty.
Could replace it for $50.00, some You Tube videos show people cleaning theirs on other brands of cars, can the Ford IAC valve be cleaned up with a little carb cleaner and cotton swabs?
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After engine is up to temperature the engine has a buzzing/whining sound just at idle. Pick up rpms and its gone. They thought it was comeing from the oil filter and changed the filter and it disappeared for a while but its back again.
Very hard to pinpoint the sound even with a styphiscope. Going back to dealer.
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A few weeks ago I started noticing what I would best describe as a whining noise when I accelerate. It's not very high-pitched but definitely noticeable. It seems the more I accelerate, the higher pitched the whine becomes, and I can only hear it when I am accelerating. It is not very loud: if I have the radio or stereo on I can't hear it. I have a 2009 Corolla LE with around 122k miles on it (I drive a lot for work.) A few weeks ago I had the car in for an oil change, and was told that my battery was getting low and will need to be replaced soon, so I'm not sure if that would have anything to do with it. As far as describing the specific location of where it is coming from, the best I can say is that it's coming from somewhere under the hood...I know that's a very vague description, but I can't really pinpoint it to anywhere beyond that.
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Just pu my new 2013 6.7 Diesel with 1300 miles... There is a most annoying whining coming from under the hood and sound like its coming from the secondary filter area or turbo (you can even feel it if you put your hand on the filter lines and housing) and it starts a minute or so after the vehicle has been running and you can her in the cab at 70-mph... At drive through restaurants I have to shut the tk down to place my order and never goes away..
[URL] .....
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My dad recently asked me to find out what is wrong with his A/C unit on his truck. He has a Chevy Silverado 1500 LS. it's a 2002 model. um.... anyway, he usually blasts his A/C around 3 to 5. the a/c setting goes from 1 thru 5, and off. so i was thinking that since he uses the a/c so much that he's gone and broken something.
In the middle of summer so i suspect the heat has something to do with it. some days the a/c works, sometimes it doesn't. although i've ridden in the truck a few times since the problem appeared, I've noticed that the a/c almost always works when we pull out of the garage or when its cool enough. and never works when we come out of a store or somewhere to the truck that's been left out in the heat in the parking lot.
There's one more thing. i haven't noticed it yet but this comes directly from my dad. he says that sometimes he'll just be driving along and he'll hear a 'clunk' noise and the a/c will start working again. How to fix this problem. I assume this is something very common. and would it be easy for me to fix? i know more about computers than i do cars, and I've already taken apart 1 laptop and fixed 2 others. I feel fairly confident taking part of a car apart.... er, truck in this case.
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2001 Chevy impala with 2 problems. First, I get a whining sound that lasts about 1 min after the car has run for about 5 min, and as soon as the noise starts the engine temp goes up (high, but not in the red). It's not the accessory belt, revving the engine doesn't do anything and either does putting the car in neutral. I can get the tone to slightly change by turning the a/c on and off, but it doesn't stop the whining. It sounds like it is coming from the radiator fan and when I tapped the one fan the other day, the noise stopped, not sure if it was just a coincidence. Second, I get a popping noise coming from the front of the car when accelerating. I don't think it's the shocks because I compressed the shocks by bouncing on the hood and got no noise.
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I've got a noise that has me puzzled on my 1995 Chevy C1500 (2wd). I hear a mid to high pitched noise when I'm driving at between 45 and 55 mph (70-90 kph). It varies in pitch depending on the speed I'm going, starts at around 45 and goes away above 55, and also tends to go away if I lift off the gas. The sound occurs in any gear, but always at the same speeds. My leading suspect is the differential, but I haven't ruled out anything yet. I pulled the differential plug and the fluid isn't very dark.
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I've been having this problem for a while now. Specs: 2003 Silverado-1500 with 260,000. New wires, plugs, fuel filter. I clean the Throttle-body and Mass-Air-Flow Sensor every two weeks. I use Techron fuel additive @ every fill-up. I have also tried using Seafoam Motor Treatment in the tank and crank-case. It turns-over but won't start. I have to try 3-4 times before it starts. The only time it starts on the FIRST try is when the gas tank is FULL.
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At 50 MPH and above, a popcorn popping sound occurs - varying fast and slow - only began after car was serviced. Can't find the source. Checked since it started and still nothing found - but new thermostat was installed, new gauge panel (due to car appearing to overheat but it was a faulty gauge), new wiper arms installed (thought they were the cause), running board rubber re-attached (thought it was flapping) - none of these were the cause because it is still occurring.
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