Using a bad lubricant or due to lack of lubrication. If when you press the gas pedal a humming noise is heard, then, most likely, the release bearing is damaged and needs to be replaced. Tires that are cupped or scalloped have uneven tread wear across the tire. Rust in the exhaust system is caused by moisture obtained from the chemical reactions and rain. Checking it requires you to be under the car and some mechanical skills. A skilled mechanic for quality results can replace your muffler and oxygen sensor. chevyguy8893 said: If the wheel has play when it is lifted up it will make narrowing the problem down really easy. His previous avatars include an automotive professional, photographer, and journalist, and you will certainly experience the roundness of experience in his piece on this site. A humming sound heard at idle has to be something that moves even while the car doesnt. Slow or hanging shifts. Youre looking to change your Sonics load balance from one side to the other. 2014 1.4 L turbo Chevy sonic squeaky squealing obnoxious sound diagnosis. Low Transmission Fluid Low transmission fluid in the engine can cause humming noises when driving. Sometimes it can take longer if the wheel hub is stuck, it then requires a lot of hammering or use of different tools and techniques to remove the hub. 2008-2012 GMC Acadia. Software glitch. Low oil level in transmission whether your car has a manual or automatic transmission can cause a humming noise when driving. And regularly check the oil levels to ensure it of the right level and condition. Theyre generally normal wear items that will wear as the car ages. Humming noise is a symptom of an underlying problem with your Sonic, which must be resolved urgently for your safety and driving comfort. Estimate. GM 3100 V6, CAI router to drivers side wheel well with S&B filter, Tenzo T-R exhaust, Bosch spark plug wires, NGK spark plugs, Mobil 1 synthetic oil, front and rear strut braces, 54mm TB, Falken high performance tires (forgot specs), green coolant swap. So, after starting the car you will hear the hum for 2-3 minutes because the pump tries to pump thick liquid. Often you can hear the hum when starting the car after when cold because the oil thickens at low temperatures. Heres what a bad wheel bearing sounds like: A bad wheel bearing can cause a humming sound. Another simple method of checking if you have a bad wheel bearing is by jacking up the car. Low fluid levels cause friction in the transmission, causing them to overheat and generate the hum. In general, it is advisable to change the second bearing on the same axle even if there is only one defective wheel bearing in your Chevy Sonic. It is possible the humming noise youre hearing while driving your Chevy Sonic may not be due to a defect, but because of the type of tires youre using, especially if you started hearing the noise after installing new tires on the rims. This is the most common cause of why you will hear humming noise in the car when driving. However these noises can also occur due to faults in suspension or steering system components, therefore you should consider a bad wheel bearing if the vehicle presents other system as well, like humming or grinding noise and play in the wheel. Poor road conditions. Like in the case of a damaged wheel bearing and low transmission oil level, the sound is louder. In most cases, leaking is the leading cause of low transmission fluid levels. Alexanders Import Auto Repair All these cause CV joint noise when accelerating in motion or making sharp turns. Worn or damaged shafts. Home Troubleshooting Chevy Sonic bad wheel bearings symptoms, causes and diagnosis. You can jack up the front end and see if there's play in the bearing, grab the tire at the 6 and 12 o'clock and the 3 and 9 o'clock positions and rock the wheel. Next, well bring the car into the shop and elevate the entire car. Whining when starting can be frustrating to diagnose since you constantly have to start and restart your Chevy Sonic to duplicate the conditions that caused the sound to begin with. While you can go a thousand more miles, it can turn dangerous for everyone on the road. Usually it doesn't happen unless the car has been driven some distance and is completely warmed up, with or without the a/c having been used. - 2011-2016 CHEVROLET SONIC / CRUZE HOW TO REPLACE ENGINE MOUNT 4 STEPSHey guys in this video we show you how we fixed the loud vibration noise that was rattling all over our car! Impacts of all kinds are much more damaging to bearings than the high loads. The one good thing to always stay on top of is normal scheduled maintenance. 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There are also a lot of moving parts that need to be removed and then properly reinstalled to complete the task. 1. The Fora platform includes forum software by XenForo. It would be obvious when looking at the issue. Thats a great indication that it is probably the power steering pump making noise. Did the sound change as you moved the wheel? The one good thing to always stay on top of is normal. It is important to know exactly where the humming sound comes from because this can indicate a serious problem with the car that needs proper repairs. But, you can quickly know by steering the wheel to either side, like when changing lanes. You can tell that the transmission is overheating if you notice a burning smell. The most common symptoms of a bad wheel bearing in Chevy Sonic are grinding or humming noise, knocking or clunking noise when cornering, shaking steering wheel, body vibration, uneven or abnormal tire wear, play in wheel, and vehicle pulls to one side when driving in a straight line. These sounds become louder when accelerating. A good place to start would be to check the transmission fluid. Glad I posted here, for some reason it didn't even dawn on me that they were covered under the power train warranty. When we turned the car on it shakes everything! Rotated both front tires to rear Inspected the tires while rotating and saw nothing out of ordinary Here are the most common causes of whining noises when accelerating: If your Chevy Sonics alternator is going bad, itll often begin to put out a high-pitched whining sound. The humming noise also intensifies when you accelerate. Or does it not change with engine speed? You can test all four wheel bearings when the car is stationary. Clunking or rattling. A bent or wobbling pulley can cause the serpentine belt to make noise. Jack up each wheel and spin it freely. If there is, youre usually looking at a worn wheel bearing and not a bad tire. It helps provide additional brake assist during low engine rpm. You can easily know you have a failing wheel bearing because as you increase the speed the hum becomes much higher in intensity and under a variety of conditions: on a straight road, when turning when driving on roads with different surfaces. The humming noise can also appear in the hoses of the power steering hoses because of their improper placement, and this symptom can be heard when the engine is idle. While there , Your email address will not be published. $99.99. When the belt becomes loosened, accelerating the car creates a humming sound. Also, if you hear vibrating sounds coming from the driveshaft, know that the differential is failing, and you need to have them detailed. If it gets too low on fluid, itll whine a lot. But its more likely your Chevy Sonic has a suspension problem. If you want to extend the differential life, you should regularly service it. Uneven roads with potholes, bumps, and dirt tracks often affect wheel bearing. It leads to poor performance of the engine, and it may eventually shut down. With uneven tire wear, you may also notice: If your Sonics wheels are not correctly balanced, it can cause a humming noise when driving. Brakes make a crunching or thumping noise when pressed when I start driving and takes a while to stop. If your car tires are unbalanced, the strain you put on the wheel bearings will take a toll on them. You can usually tell if a wheel weight fell off. This could be a drive belt or one of the components driven by the drive belt, such as the power steering pump, air conditioning compressor, water pump, or one of the idlers that hold the belt in place. Knowing where and when the noise happens can make quick work of diagnosing a whining noise coming from the Chevy Sonic. When driving, the speed creates additional forces. Then, soak the inside of the converter using a spray bottle. Symptoms Grinding or humming noise Its not a breakdown risk, but you can still end up stranded if the wheel bearing or suspension component causing the hum fails. Generations 5 & 6 Malibu, Years 1997- 2007, Gen 5 & 6 Problems/Service Issues/Troubleshooting. If one sounds gritty, that wheel bearing will likely need replacing. This is achieved with a grease filling that ensures adequate lubrication of the rolling elements over the entire service life of the wheel bearing. Had transmission rebuilt (Pro).My problem is that when it gets around 35, 8L90E Specs, Performance, and Identification, TH400 Transmission Specs, ID, and Common Problems, other serpentine belt section of this article, Chevy Silverado Whining Sound: Identification + How to Fix, Chevy Spark Whining Sound: Identification + How to Fix, Mazda 6 P0320: Meaning, Causes, & Diagnosis, Should stop a few seconds after cranking the vehicle over. Only the power steering pump will change with RPM or the steering wheel. While the vehicle was parked, the ignition would inadvertently start and the rpms increased violently. RECALLS! With that in mind, this page is divided by when you hear the whining noise and common causes under those conditions. Everything I read says check for play in the wheel from 12 to 6 o'clock, any other suggestions to find which wheel bearing it might be, or anything else to check? Why Do Blower Motors Fail? Failure to install the bearings as per the manufacturers instructions will likely cause problems. When you see that the wheel rotates with ease, you should rotate it by hand as quickly as possible to hear the hummin noise. Air escaping through a leak can also cause a distinct "humming" noise. Determining when the noise is at its worst helps pinpoint which side the failing wheel bearing or other drivetrain component is on. Tires are balanced with wheel weights when a new tire is installed. Mechanic's Assistant: Is it just the ABS light? If it is even a little bit out of alignment, itll be enough to cause a whining noise. And though the leak could be coming from other car fluids, you may know if the low transmission fluid is the cause through these symptoms: Having low transmission fluid can be caused by: If the issue is with the torque converter or a damaged transmission gasket, you should replace them with new ones. Since a bad wheel bearing can affect the alignment of the vehicle, your Sonic will pull to one side when driving in a straight line. Therefore a bad wheel bearing must be replaced as soon as possible when symptoms first appear. If the noise worsens, its probably an issue with wheel bearings. However, the noise resembles more of a crackle and it can also be heard when you are in a turn. 1. Off-road and snow tread tires are notorious for making a loud humming sound. Damaged boot clamps Your CV boots are kept in place by boot clamps. Second sign is that the noise changes when cornering, which varies depending on the steering angle and thereby increases or decreases: a hum when turning left, for example, usually indicates a defective wheel bearing on the right-hand side and vice versa. You can diagnose the hoses by turning the steering wheel in one direction or another. A humming noise can be caused by a number of different systems in your vehicle. The increased heat may break down and eventually expel the lubricant, leading to premature failure of the bearing. A noise you hear at idle and a noise you hear only while driving are two very different problems. If the cupping is on the outside tread, it still could be an alignment issue. Often problems with these hoses were observed in Mercedes-Benz cars with the Active Body Control feature. If the steering system has issues, you will likely hear humming sounds. This could be a small leak in the exhaust system or air intake system. Tires that are cupped or scalloped have uneven tread wear across the tire. We always perform a final test drive after the work is completed to be sure the problem is resolved. Wiggle the steering wheel back and forth. You can suspect fluid leakage and check for a trail underneath the car. A professional mechanic can swiftly diagnose the problem for you. It's when there is no play and the wheel bearing is bad that it is harder to diagnose. Here in Canada the wheel bearings are definately covered by the GM powertrain warranty. Poor installation. The humming sounds coming from your car could indicate a failing differential. Required fields are marked *. Let the cat sit for 20 minutes or longer so the chemicals have time to work. Once a good ground is restored, it should go away. I was thinking maybe jackshaft bearing where axle goes into jackshaft it feels warm on . Other factors can also contribute to premature bearing failure on your Sonic, like driving with unbalanced tires or poor wheel alignment. I gained a lot of experience in this field and I like to share important tips and tricks. 2010-2012 GMC Terrain. Tire cupping or scalloping is a type of uneven wear that is known to cause humming noise at high speeds, and is often mistaken for a bad wheel bearing. As I go down the freeway, around 40-70 mph, I get a hum hum hum hum sound coming from the front, maybe the drivers side. If it did, your car likely has a faulty wheel bearing. Wear in these components will cause a humming noise as theyre moving. Thanks. It is simple. Sometimes other symptoms may also appear, a knocking noise when cornering, and vibrations in the steering wheel or the whole body. 2007-2010 Pontiac G5. If it didnt change, its likely a tire-related problem. In most cases, leaking is the leading cause of low transmission fluid levels. If there is noticeable grinding or droning noise inside the cabin of your Chevy Sonic when driving, you should definitely consider bad wheel bearings. Been burned doing that but it works much more often than not. The most common reasons a Chevrolet Sonic engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak. See the wheel weight above? When these parts wear they will make noise. Bad wheel bearings and bad tires have a similar sound. SEE, I think it's a 15 pin plug and two wires change on the plug fro 95 to. Grinding or low-pitched humming sounds can be a sign of wear and failing parts. If it did, your car likely has a faulty wheel bearing. These sounds become louder when accelerating.
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