How To Quiet Differential Whine

Just wanted to share my experience with my transmission recently. Truck has the locking rear diff (which got alot of use in this winter's snow so far). Land Rover LR2 Rear Differential Repair Kit. It just got louder now. The differential is a key component of the F-150s, F-250s, or any other truck's driveline. Mine did/does it as you describe. There can be a lot of clunks, squeaks or hums that can indicate a wide variety of other problems, but a whining power steering pump us usually very distinctive. I never did anything about the noise, and just got used to it. The noise started with the colder weather. This seems like a good time to address any front differential problems. If a differential doesn't chatter or make noise in turns then it is not needed and the modifier has no benefit. One of the symptoms that is most commonly associated with bad or failing differential or gear oil is a noisy transmission or differential. Whining noise from the rear differential when driving. I can hear some differential whine in my Touring non-LSD when driving slowly and decelerating under engine braking. Pitch varies with road speed. We found that most of the noise was coming from the center diff. The same with the diff housing, just a little sweating. The whine increases with speed, sitting still no whine, the New Honda is very quiet just revving the engine, whine doesn't change with pavement conditions, The MT kit and bike are new, hopefully the people up at MotorTrike put fluid in the rear end. Go 10 MPH higher and lower and the noise almost completely disappears. Strange (whining) noise while driving Hey guys, I just recently picked up a "new" 2004 5 door golf tdi 5 speed and loving it. Is a whining noise while accelerating, disturbing your peaceful meditative state at the driving wheel? It's time you did something about it and investigated the mystery. I've got new bearings, new pinion seal, new diff cover gasket. The motor is running strong and the noise doesn't happen if you accelerate hard; it only happens at RPM's 1,000 or below; parking lot speeds. That sounds distinctly like rear differential whine. i just recently changed the diff fluid and added the additive as well. While there is no help for our singing, we can help you diagnose the sounds coming from a differential gone bad. I think the auto trany diff. If the gears have been quiet and begin to howl, they are probably worn or wearing. This could be due to worn bearings in the diff case or just that the gears were never set up with the right mesh pattern. diff is set to after that little test so the question is, is my central diff rooted? I chcked the power steering fluid it seems fine, some other people made comments about rotors etc. The noise originates from the center of the vehicle. Its got 42,000 miles so its not high mileage. The noise does not increase when turning the wheels at a stop. The car was not overloaded or abused or use for towing. Under acceleration, I can hear a whining noise from the rear of the car. Water will make the fluid look milky. Banana Peel In Diff -----SOME gimp told me that if you put a Banana peel in ya diff the whine noise will go away. Re: Drivetrain Noise/Whine at Speed. How to Troubleshoot Rear Differential Problems by Kevin Freeman If you suspect a problem with your vehicle's rear differential, the information outlined in this article may save you time and money in the diagnosis and repair phases. I confirmed the noise when I was in between a drive thru and another building and its definitely something that wasnt there before. You could even pull the diff cover and inspect the wear pattern. The whining noise was there before my bearings were replaced and remained there after my bearings were replaced. It increases in whine as i accelerate until the car changes gears. Now its quite loud, replaced rear pinion seal and pinion bearing to see if a quick fix would do it but no luck. If the fluid level in NOT low, then the diff and or bearking need attention. Also, you mentioned mud, so you need to check your diffs. The whine will be constantly present, but may change pitch or intensity. The whine is much better, however there is still lots of gearbox and diff noise at speed. Some symptoms of a bad differential on a Mercedes-Benz are whine, rumbling, humming, growling, noise while turning, vibration, loud clanks or grinding at low. I changed the diff oil and tranny fluid this weekend to see if that would help-didn't. There's kind of a hum or whine while in motion and under acceleration. I've found very similar with mine, the 1st BMW diff was replaced under warranty, not because I was expecting a Caterham to be quiet, but because the diff whine at anything above 50mph was so. 10s (which it also had). Gear Noise Upon Deceleration Need Help (Updated) O. NOTE REFER TO THE "DIFFERENTIAL RING AND PINION" IN-VEHICLE REPAIR PROCEDURE IN THE ONLINE WORKSHOP MANUAL SECTION 205-00, FOR THE LATEST AXLE DIAGNOSIS AND REPAIR PROCEDURES. The differential is the gear in the back of the truck that transfers the drive to the wheels. Audi Q5: How to Replace Wheel Hub and Bearings After enough miles your wheel bearings will probably have worn out, and they can be expensive to fix at a shop. The most recently reported issues are listed below. I drive an MY07 S3 which is totally standard. To make matters worse, you can't seem to figure out which part of the engine it's coming from. Recently, the loud roaring noise I thought was a problem with the tires has been diagnosed by two mechanics, one at the dealership and one a trusted independent, as a "problem" with the rear differential. Pepper or egg white in the radiator. Question about Driveline/Rear Differential Whine So I've been reading threads all over the Toyota/4Runner forums about driveline noise, whining, whirring, grinding, humming etc. No whine from the rear tire but I do get tranny/diff noise. BMW 135i Differential Hum/Whine from BMW Ihaveone on Vimeo. Rumbling or whirring at speeds over about 20 mph can be caused by worn carrier bearings. The noise is louder decelerating in 4th or coasting in neutral. It is actually challenging to find the root cause of whining noise when accelerating but these common causes will give you the heads-up. com has the best Synthetic Gear Lubes available like the AMSOIL Severe Gear® Gear Lube for your differential which Offers Superior Gear and Bearing Protection. Noticed a whine/howl sound @50 to 55 mph for the past week coming from the rear diff. Any difference in tire diameters or rolling resitance causes the transfer case on AWD systems to partially engage, which causes a rumbling, whining, or sometimes a whistling noise in second gear, but it could occur in other gears as well, and sometimes in all gears depending on how engaged the transfer case is. Average failure mileage is 3,300 miles. it is not the actual diff making the noise, it is the nut on the pinion gear. Usually a differential whine will change or get worse as you drive 30MPH, then let off the gas (whine noise changes or gets better) then reapply the gas (whine noise comes back). Use a stethascope or a scrrewdriver to narrow the noise to the center or left or right side of the rear end. Pepper or egg white in the radiator. However, you may be able to quiet the diff, to some degree. The noise is indeed from the rear. In talking to a Nissan tech, he reported seeing failures happening around 60K. While all wheels are off the ground place the car in Drive and get the wheels spinning. FIX - Rear Differential Coupling Growl (Whine) Noise Hey Everyone. Ive got a 2010 Xterra SE, AT,with almost 100k on the clock, and there is a whining noise coming from the rear differential, while keeping speed or accelerating. Some of the folks that were bothered by it switched out the rear-end gear oil and said the noise is less using RP 75W-140 Synthetic Gear Oil or Wolf's Head 85W-140 Gear Oil. I bought a 4 year old Lincoln Convertible off a car lot. It appears that Ford motor company is aware of this problem but are not willing to repair this issue for free. I fear the gears are not set correctly or a bearing is going out. If it whines when you're on the gas but goes away when you let off the gas, definitely sounds like a rear diff noise to me. The noise is wheel speed dependent, not engine rpm, and it happens when driving at a constant speed within that 75-85km/h range. However, the subtle difference between the two can be identified, as tire noise varies with the kind of surface you are driving on, but rear differential noise doesn't change. Some customers may complain about an abnormal noise from the rear of the vehicle that increases in volume as vehicle speed increases. A smart monkey would do both wheel bears and 4 diff bears and be done with it. help with whistle/whining noise I have a 3. Pitch varies with road speed. Will thicker oils make for a quieter gearbox/drivetrain? I was contemplating gearbox, transfer, diff and overdrive oils. Audi A6 C5: What Is This Front End Rotating Grinding Noise? Hearing a grinding noise can be very worrying, and there are a lot of potential reasons for it. i think this is an aluminum or Magnesium case on the differential. So if you have a noise coming from the rear of your AWD Honda, change the differential fluid with the correct Honda fluid and see if the noise goes away. It's not a "buzz" or a "whine" - it's more like a very specific resonating frequency, like a tuning fork or something. That's as much detail as they both have given me. In this time we have had the rear axle replaced three times for diff whine at various speeds up to 100km/h. The grinding noise is coming from what sounds like the front diff area. Why Does A Car Make Whining Noise When Accelerating? A car that makes such a weird noise at the time of acceleration, will be fine at a set speed. Reduces Gear noise and whine, smooths shifting. My standard fg bushes were gone after 5000kms. Actually I just started noticing it but I do not remember it before. All of these issues require rebuilding in order to fully rectify. The whining or howling is caused by lack. I got a whining noise coming from a differential/ Transmission area on a 6 speed car, I heard is common for early 968's, the transmission has been replaced once before and this unit is much quieter that the first one, is there a way to lower the noise without dismanteling the tranny?, in case of repair is it complex or very expensive and what. 02M Whining noise 12-29-2010 02:05 AM #1 heres the deal, ive been hearing a whining noise out of my 02m during DEACCELERATION throughout all the gears. Im thinking a diff noise but performance wise seems the same except this noise, its starting to annoy me. Steps so far: car is at dealership. I have the same type of whine you are explaining. I don't really hear anything going straight but with the slightest turn of the wheel to the right the rear starts to whine. The 140 oil made the differential a little less noisy than 90 oil. whining noise from rear only on deceleration 2002 xvs 1100 dragstar classic, whining noise on deceleration, checked brakes ok, checked rear wheel bearing ok, sounds like a diff bearing but quite loud and only on deceleration, dip clutch no noise. In this video I show how to change the differential fluid in my 2004 Element. Overfilling it won't solve anything. Off throttle noise/whine is the same thing I heard when my carrier bearing went out. Mine's a D70, a little lighter than what you've got. Pull the cover off the front diff and check for metal shavings or water. I find that the transfer case is shifting into 4WD correctly but the front differential is not engaging the front wheels. In regards to the whine heard on acceleration what I think and also what the generally census is, it's the belt being to tight and so they say after 1500 to 2000 miles belt will stretch some and noise will reside. I drove it from the Bay Area to Los Angeles after that and the noise. Front wheel bearings were replaced three months ago and the old ones were coated in hard-baked grease and ready to disintegrate. I have noticed that my Legend is making a whining noise at about 30-40 mph goes away past 40 mph. With just the pinion spinning there was no noise at all. I had a jeep that made similar noise at higher speeds and it was the rear piñon bearing going but I'm not quit sure on this one. I've had a noticeable (but not loud) whine under load at 50-70 mph for the last 10k miles or so. whining noise from rear only on deceleration 2002 xvs 1100 dragstar classic, whining noise on deceleration, checked brakes ok, checked rear wheel bearing ok, sounds like a diff bearing but quite loud and only on deceleration, dip clutch no noise. Do I have to take apart the trany to gain acess to ajust the diff. No noise in 1st,2nd or 3rd gear accelerating or decelerating in gear. getting robbed never go to the dealer always a rip off they go by a book on pricing call another dealer and see what there want for the job. Rarely on both. That whining noise derives from the viscous coupler, and is normal. The rear pinion seal was leaking about 6 months ago and I had it replaced. If I let off the throttle, it disappears, but then barely tapping the gas it makes the noise again. REAR END NOISE, WHINE - Answered by a verified RV Mechanic We use cookies to give you the best possible experience on our website. when my diff went the noise was soft at 1st but after a day it got so loud i stopped driving the car because i was worried it might explode the diff i have in now does whine a little but i think its fine i have read about a retro fit where they put an insulating strip on the drive shaft bearing to stop a whining noise from the back. Appearently its pretty common in AU series 1's. Dealership says they called the factory and the factory says its not completely abnormal for the mileage and doesn't currently advise a repair/replace. has anyone had same problem if so possible fixes as im running out of ideas Cheers Chris. This is the replacement differential on my truck. If the vehicle is low on transmission fluid, it can also cause a whining sound, accompanied by gear shifting problems and other habitual issues. The commander has strait cut gears in the rear diff and they are notorious for making the wine noise. When I turn right while driving I sometime hear a humming or whining noise. it sounds fairly quiet and can't be heard with the windows down or the music on! I was thinking a bad cv joint or maybe the front diff. Learn more about limited slip differentials, diagnostics, and rear differntial noise heard in the rear unit. when i pick the truck up and give it gas i don't hear it. The dealership mechanic has told me it could range from $1200 to $2K to repair. i was driving it one day and i had my windows down. On the other hand, nobody ever died from a bit of gear whine. If I let off the throttle, it disappears, but then barely tapping the gas it makes the noise again. 2006-2013 MX-5 vehicles with VINs lower than JM1NC*****233232 (produced before May 29, 2013) Whining noise from the rear differential when driving. In the case of a rear end, the noise can be a humming sound, a growl, or even a knock. No noise when the car was idling. When applied, the gear oil in the differential carries this Engine and Metal Treatment to the asperities of the metals to form a covalent, galvanic bond on it. So if you have a noise coming from the rear of your AWD Honda, change the differential fluid with the correct Honda fluid and see if the noise goes away. The other possibility is a problem with the exhaust system. I can hear some differential whine in my Touring non-LSD when driving slowly and decelerating under engine braking. Isolate the noise. whining noise in rear end ooppps sorry my vehicle is a 03 GMC Envoy SLE. I read some posted remarks on this subject and did read mixed postings. Someone told me I can "shim" it and it would take care of the whining noise and others say that it won't and I will need to rebuild it. My diff was installed in 1 day. I am set to do the front axle service this week. I put it on a buddy's lift to see if we could identify where the noise was coming from and we heard from the transmission case. The whining or howling is caused by lack. We found that most of the noise was coming from the center diff. ” Three! The sound did indeed become louder, until a new deceleration sound developed. Quiet, perfectly quiet now. MG MGB Technical - Rear Axle Noise I'm trying to decide whether to do anything about the noisy rear axle in my BGT. But, that noise isn't good. I have taken good care of the car since I bought it new. It is one of those Teflon-type additives that has worked for me in the past and is, at least, a cheap fix if it works and not a biggy if it doesn't. i just recently changed the diff fluid and added the additive as well. all you gurus I need suggestions. it doesnt bind up on turns drives fine just that whining humming noise at 60mph goes away when i hit 70mph anyone have any ideas?? thanks joe. The whine will be constantly present, but may change pitch or intensity. However, GM has paid little attention to us and not provided us with a fix for this problem. And as far as gear whine, it's impossible for both the tranny and differential to be completely quiet. I recently had new fan belts installed after hearing a high-pitched, whining noise, but that didn’t solve the problem. I'm experiencing a lot a whine out of the rear differential around 40 MPH. The car was not overloaded or abused or use for towing. Truck is a 1995 1500, 4x4, 5. Ever since the CTS-V was introduced in 2004, owners have reported rear differential problems and failures. The humming noise will get slowly converted to a growling sound over time, resulting into large-scale damage. same problem but only at speeds above 25mph for deceleration. However, the subtle difference between the two can be identified, as tire noise varies with the kind of surface you are driving on, but rear differential noise doesn't change. Rarely on both. This video shows a classic example of BMW 1 series diff noise, whining on and off acceleration. One way to quiet it down is to swap the OEM fluid for some sythetic gear fluid like Redline Differential Fluid, that is what I plan to do if it gets worse anyway. drove it from LA to San Diego had a lifter ticking. 3 4907 tmaxx and I have began to notice a whistle/whining noise when accelerating. How to Troubleshoot Rear Differential Problems by Kevin Freeman If you suspect a problem with your vehicle's rear differential, the information outlined in this article may save you time and money in the diagnosis and repair phases. What I had been almost willing to bet was drive train noise, specifically diff noise, proved to be all tire noise. just in case being a awd there might be something in the drive f or rear that is lacking some t. Repeat this process two or three times. i just recently changed the diff fluid and added the additive as well. I had my mechanic take a drive and listen to the noise and he thought it may be coming from the diffential. This was done in my 2011 Commander X: I removed and dissasembled the rear differential, then I saw that the oil level was way too low and I noticed that the oil that came off it had "little pieces of metal" which means. Not the end of the world. What else could be causing the noise? A: There are many potential causes for a noise of this type. Mix it up thin enough to pour. Changing the differential fluid will help and avoid differential costly repairs down the road. Truck is a 1995 1500, 4x4, 5. Any other advice. I see many low mileage diff's for sale but always 3. Using the wrong fluid could result in damage to the differential. com of an additive that you can get from ford that you put in your diff to cut out diff whine. Re: 99 GT rear axle noise I had that happen to a gmc van that i have its sounds like a carrage bearing od maybe your shaft input bearing and for the dealer you are diff. My educated guess would be that you have a faulty front wheel bearingto confirm, jack up the car prop it on axle stands then pin the wheels in turn, you should be able to hear the noise as you spin the wheel, you may even feel a "rough" feeling as you turn the wheel. Some carmakers have come out with semi-synthetic gear lubricants that have a specific life and need to be changed according to schedule. All of this could be the result of improper oil level in the differential. Whining Differential or Transmission One of the symptoms most commonly associated with bad or failing differential or gear oil is a noisy transmission or differential. So I started to wonder about the pinion bearing. We found that most of the noise was coming from the center diff. So I have a 1998 S10 2. The noise is commonly described as a whining, humming, roaring or growling noise. This problem has been exacerbated due to the continual reduction in sounds from other system noise exciters such as motors, engines, and wind. axle assembly to repair an axle whine/hum. found an 03 denali for sale but the ad says there is a "whining sound coming from the front differential". Rear diff burned out and had to be replaced for $3000. The transmission holds power great and shifts perfect/smooth, so hoping its okay, but just not sure as it is mounted to the differential in the rear so I can't isolate the noise to one or other. Land Rover LR2 Rear Differential Repair Kit. It has not gotten worse. I heard a loud noise sounded like metal on metal thought they had messed up my drum brakes I had done a month earlier they said it was the rear differential my question is should I get a second opinion about replacing the whole thing. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and more!. Differential or transmission are whining. I purchased a new one and when it's in I can hear a whining noise coming from the front diff. Why Does A Car Make Whining Noise When Accelerating? A car that makes such a weird noise at the time of acceleration, will be fine at a set speed. Rear Differential Noise - if you hear howling from the rear of your truck or SUV when you're driving, it's possible it's rear differential noise. I would have to pull over, turn off the car then start up and run normal again. Why Does A Car Make Whining Noise When Accelerating? A car that makes such a weird noise at the time of acceleration, will be fine at a set speed. The dealership mechanic has told me it could range from $1200 to $2K to repair. Just wanted to share my experience with my transmission recently. In talking to a Nissan tech, he reported seeing failures happening around 60K. It is easy to confuse this with lubricity but it is not the same thing. The car has 8000km and only the premium gasoline is used. pulled a valve cover and there was a gob of white Grease over one of the rockers. Usually a differential whine will change or get worse as you drive 30MPH, then let off the gas (whine noise changes or gets better) then reapply the gas (whine noise comes back). The same with the diff housing, just a little sweating. May we ask how you eliminated the rear wheel bearings as a source of the noise? Wheel bearing noise can be hard to detect right up to the point of failure. What else could be causing the noise? A: There are many potential causes for a noise of this type. That sounds distinctly like rear differential whine. I have also put an LSD in which i thought might have caused the whine. 22 reviews of San Francisco Differential Repair "I purchased an 09 Infiniti G37 convertible with an open differential. • A "howl or whine" during acceleration over a small or large speedrange is usually caused by worn ring and pinion gears or improper gear set up. ” Three! The sound did indeed become louder, until a new deceleration sound developed. It also helps to quiet noise and reduce vibration that may develop in differentials and limited slip rear axles, thereby extending the life of the differential and axle before replacement or rebuilding is needed. WE BOUGHT a VY automatic V8 Holden Crewman last year and have covered 10,000km. After driving the vehicle in the air and listening to the drive train with a stethoscope, the rear differential pinion bearing (the bearing that supports the main driving gear inside the rear differential) was failing. However, the subtle difference between the two can be identified, as tire noise varies with the kind of surface you are driving on, but rear differential noise doesn't change. In this Tech Tip video you'll learn about why your rear end or front end differential may be making noise upon deceleration, and what can be done. No noise below or above that speed. Tranny feels good, easier shifts far as i can tell. Open up the top plug on your diff case and funnel this stuff in. Sounds like the differential - you know - that gear whining noise. Its a faint whine, If it was a gearbox related issue, would the noise still happen out of gear with the clutch down?. Rebuilding Mercedes Front Differential. But tires can make the same noise when cupped or scalloped. drove it from LA to San Diego had a lifter ticking. Ive got a 2010 Xterra SE, AT,with almost 100k on the clock, and there is a whining noise coming from the rear differential, while keeping speed or accelerating. They drove it, checked the fluid level and did what they called a diagnostic check. I have changed the Axles, changed the fluid( I even tried synthetic fluid to see if that would help) the wheel bearings, brakes, seals in diff, (supposedly) the bearings in the diff as well. What is Alternator Noise? Alternator noise is a high pitched whine caused by the car's electrical system. Often used by dodgy used car dealers to shut the diff up for a short while before the car is sold. Spider gears make a LOT of noise when the car is on stands and you turn one wheel. I need help with a whining noise when turning right in the Nitro. which I don't get bent about because even though they don't look perfect they are always quiet!! and that's what I'm after, no whine. In this Tech Tip video you'll learn about why your rear end or front end differential may be making noise upon deceleration, and what can be done. We are seeing a few 2019 Toyota Tacoma's with a whining noise in the differential. Normally more of a light drone noise as opposed to a whining. I don't hear it if it's at parked and I'm revving the engine and pressing accelerator. Is the whine noise present mostly between 0 - 40 mph? • YES - Continue to step 2. Go 10 MPH higher and lower and the noise almost completely disappears. Whine after diff fluid change do not know if it is the transmission or the transfer case but the whine goes. Why at such low milage the Differential is giving problem already? The noise just don't start now but at about 60,000 Km (37,500 miles). Abstract BACKGROUND– Eye pain, periorbital and retro-orbital pain, and headache or facial pain referred to the orbital region are common presenting complaints. I guess it is time to pull the whole thing out and rebuild it. It is actually challenging to find the root cause of whining noise when accelerating but these common causes will give you the heads-up. If it's there on acceleration, you're likely looking at worn ring and pinion. The whining noise is there all the time. The whining is constant as you maintain a constant speed but it has "dips" in the frequency like if the noise comes from something that isn't 100% even. The noise is wheel speed dependent, not engine rpm, and it happens when driving at a constant speed within that 75-85km/h range. all AWD cars regardless of manufacturer produce some normal gear whine. Re: Rubbing or whining noise when turning If the "rubbing noise " is coming from the rear and is NOT evident when going Straight, it's probbably an issue with the rear differential clutches. It sounds like a differential going -- like when my old 3 series bmw rear diff went 15 years ago. Coming off the trottle the noise is gone. Any difference in tire diameters or rolling resitance causes the transfer case on AWD systems to partially engage, which causes a rumbling, whining, or sometimes a whistling noise in second gear, but it could occur in other gears as well, and sometimes in all gears depending on how engaged the transfer case is. So that tells me its something in the driveline. Re: Diff whine and oil change interval rowan194, are you sure it's the diff? does the noise change whether it's power on or power off? does it change if the car is in neutral? because i have a whine at 92-96kmh. And its not the CVT, when I replaced my clutch I started it up with the CVT cover off to look at the clutches operate and there was very little noise from the two clutches. I already purchased a used diff from ebay and still have the same problem. There is noise in 4th gear but not crazy. And the noise pitch followers my speed. The whine you hear is probably from the differential and is fairly common on high performance GM vehicles. A common problem with the factory pinion bearing on the rear diff is that it loses the hard facing and develops a whine like you have described. Using the wrong fluid could result in damage to the differential. Download Some vehicles may exhibit an axle whine or hum during acceleration, deceleration and/or cruise. If you are starting to see a second mark in the gears, the mesh has changed. I recently had new fan belts installed after hearing a high-pitched, whining noise, but that didn’t solve the problem. Given the above information, I was pretty sure that the right rear wheel bearing. The whining noise is there all the time. 2006 cadillac cts with 3. Will the use of a thicker/heavier grade of oil, if such a thing exists, or alternatively oil additives that thicken your oil, make the drivetrain better and quieter?. In this Tech Tip video you'll learn about why your rear end or front end differential may be making noise upon deceleration, and what can be done. diff whine - Ford Modifications Website. Some days I hear it, other days I don't. 62 diff never whined and the 3. Water will make the fluid look milky. The 2013 Nissan Frontier has 2 problems reported for rear differential whine. I had my mechanic take a drive and listen to the noise and he thought it may be coming from the diffential. The most recently reported issues are listed below. today and determined that it is gear noise. But this time with no clunking. Noise: Howl while decelerating (gears previously quiet) Cause: Loose pinion bearing preload. There's kind of a hum or whine while in motion and under acceleration. Putting my LSD in, 2 new pinion bearing, a new pinion seal and new oil only cost me $350. The number 1 cause of a whiny rear is not breaking in properly. I have noticed that my Legend is making a whining noise at about 30-40 mph goes away past 40 mph. when i say forever I mean I had the rear end rebuilt like two years ago and just finally got everything put back together. It's not a whine but a drone that comes in quite noticeably just below 40mph (as you are leaving the 30mph speed limit) and I reckon is eventually drowned out by the tyre and wind noise by 70mph but, it seems that the noise, all of it, is less noticeable at 80mph and the whole car is very smooth at that speed. Follow the repair procedure in this TSB to diagnose and repair this condition. i told them to drive it to hear the whine, but they heard nothing, so as soon as i drove away and heard it i went back. Ive got a 2010 Xterra SE, AT,with almost 100k on the clock, and there is a whining noise coming from the rear differential, while keeping speed or accelerating. help with whistle/whining noise I have a 3. [Archive] Z3 differential whining noise E36/7 Z3 (1996-2002) Very common problem. If the gear oil runs low, or becomes excessively dirty, it can cause the gears to whine or howl as they turn. Can't be looked at until after tax refund next year, what's the best stuff (weight/brand) I could put in there to tone it down until then?. Truck has the locking rear diff (which got alot of use in this winter's snow so far). I have taken good care of the car since I bought it new. Better to use a tone-to-noise ratio? Note the trade-off: higher tooth numbers will give higher gear contact ratios which is better for noise but gear order increases and we move further away from the masking region. The most common bearing whine noises comes from the roller bearings that support the drive and driven sprockets which the drive chain rides on. M3 rear diff whine and grinding So just bought my 02 m3 and it's gorgeous. However, there is no documentation. today and determined that it is gear noise. Low fluid levels are usually the cause of the irregular wear. However, the subtle difference between the two can be identified, as tire noise varies with the kind of surface you are driving on, but rear differential noise doesn't change. Turned out to be a loose guard above the drive shaft. Gear noise from your differential can be worrying. Also gears that are not meshing properly can make a whining sound. So after they pulled the cover and found a lot of ferrous material, they are going to change the pinion and ring gear. The most recently reported issues are listed below. A qualified automotive technician can locate the source of whining sounds and diagnose contributory mechanical issues. My car's on 100,000 miles with an inspection II coming up soon. NOTE FOR 1999 AND PRIOR MODEL YEAR VEHICLES, USE THE 2000.