My guess is it whines in reverse gear under power, but not when you release the accelerator, as well. 8 Differential noise - 97 F150,8. I recently had a side impact to my rear axle. One of the determining factors is the fact that the wheel bearing noise will change with wheel speed but usually will not change with load variations i. 5” 30 spline) differential of my 1990 C1500 truck (GMT400/OB May 17, 2023 · When it comes to rear differential noise in Jeeps, the most common causes are lack of lubrication, worn bearings, and loose bolts or nuts. Around 80,000 miles it developed a whirring sound when decelerating that seems to originate towards the rear of the vehicle. The mechanic/collision center has replaced the differential (including gears) twice now. Chassis ears are small microphones that you can attach to different parts of a bad differential to check for noise. Drivetrain Rear Differential Noise. If however, the backlash is excessive, there is a brief moment during which two gear teeth lose contact with each other before contact between the next two Jul 24, 2023 · Here is a scenario: while driving, you are suddenly alerted to a strange noise at the rear end of your vehicle. Everything about the rear axle assembly including brakes and wheels, is brand new. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Apr 6, 2016 · I've been hearing this rhythmic low frequency rumble noise from the front end for a few months now, but it's getting worse! At first I thought it was a unbalanced or unevenly worn tire, because it's the same noise, but a tire rotation didn't change it. . These noises will gradually change during acceleration, deceleration, or when turning around the corner. acceleration or deceleration but the sound from a wounded rear differential will change with wheel speed and load. The repair should be more than replacing carrier bearings. It was internal gear whine. 2011, CMRW, Pro Comp, Caltrac Traction Bars, 7031's, 35" Nitto Trails, Banks Monster Exhaust, Air Horn, 20% Tint, Auto-Bot, Recon Light Bar, Eclipse Dec 2, 2007 · Just trying to sort out the noise from my diff on the hilux surf I just bought. we also simulated the sound in low speed in the drive way will turning the steer quickly. The company engaged to do the overhaul removed the diff once more only to find metal particles in the housing, a reading was done on the crownwheel Apr 14, 2018 · My specific car is a 63 NOVA with a 350 motor, 3 spd suto (350) trans, and a 12 bolt chevy rear end with 373 gears and a positraction unit. I normally drive with the windows down all the time, so this may have been… Aug 8, 2022 · In this video we show you what a failed differential bearing sounds like and looks like. 006 shim on both sides to preload carrier bearings. While you’re cruising at normal traffic speeds, your ring and pinion gear set might be perfectly happy. The thing that strikes me is that there is no change for 2wd/4wd, Drive or Neutral (It is automatic btw), never a noise on acceleration, only on deceleration. Differential Problems: The differential is responsible for transferring power from the engine to the wheels. Aug 16, 2009 · Deceleration noise I had the same problem on my F250 6. May 29, 2017 · New to the forum, kinda new to Jeeps. I recently put on a AWR diff brace and now the noise is MUCH louder as I assume it's transferring the diff noise and vibration through the mount to the chassis. It does it on both acceleration and deceleration. In conclusion, whining noise during deceleration can be mostly due to fuel system issues which can be fixed easily through replacing a few parts and cleaning them. Also running on low fluid can be the reason. Car's still driving today though, making the same noise, and no issues. Drive shaft had play, now has none what so ever. did any one have this problem and or knows how to fix it Oct 26, 2021 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Oct 26, 2019 · A differential gear whine on decel normally indicates pinion depth is too deep. Nov 7, 2014 · Had my p500 for about 2 months now. Aug 17, 2015 · Noise: Clicking while decelerating from 20 miles per hour to a complete stop Cause: Worn carrier case-side gear bores Noise: Rumble or clicking that gets worse during hard turns Cause: Bad wheel bearings Noise: Driveline squeaking or grinding at any speed Cause: Worn or damaged U-joints Noise: Clunking when depressing the throttle pedal (takeoff) Diagnosing Rear Differential Noise. Sep 1, 2021 · • Driveline Noise: The driveline noise is still there upon deceleration and coasting. 6. Nov 25, 2007 · If it at higher speeds then maybe an axle bearing noise since corning puts more weight on the outside bearing, sometimes making it louder if the bearing is rough. If you notice that the howling noise only occurs during deceleration, then it is a good indicator that the pinion-bearing preload has loosened. The rear end that it has now is a ten bolt. This eliminates mechanical noise while at the same time, keeping the gear teeth in contact with each other over the biggest possible contact area if the differential is set up correctly. Feb 24, 2018 · A whine is usually a gear noise. no noise seems to be coming from the steering at all just the differential. Went back under my car to reinstall the OEM RMM because "it needed to be unmodified" for them to chase this noise. Did you check the rear differential level and condition of fluid? Does turning right or left (loading the opposite bearing) have any affect on the noise? Feb 8, 2015 · the rear differential blew on this thing the pin that held the spider gears flew out hit the walls of the differential and blew the carrier case to pieces. Aug 12, 2022 · Help needed with a 2001 LX470 with 116k miles that started making noise during deceleration. Such as the broken water pump or the transmission system. Reproducing the popping clunking with a jack stand lifting one of the wheel hubs. Sounds like dry bearing squeal. My local dealer says that some x3's are having the same thing, but that can am doesn't have a fix. Decelerate and hear the noise, shift from drive to neutral and no change. Mar 27, 2011 · Gear Noise Upon Deceleration Need Help (Updated) O. Loose Pinion Bearing Preload. Forscan is a free Ford Specific Diagnostic Software:Download Here- ht May 11, 2019 · The wife never used the 4WD because she thinks only a sissy uses that where we live (she is from Maine). Oct 12, 2018 · Hi all, I’m new to this forum and I’m seeking help in diagnosing an issue with my AWD 300. Oct 28, 2006 · Clutch, Transmission, Differential, Axle & Transfer Case - 8. I started noticing a whirring or howling noise at highway speeds (45-60 ) if I let off the throttle completely. Sep 22, 2015 · Gear noise from your differential can be worrying. They could be caused by other driveline or axle components. If you hear a metallic whirring noise upon the deceleration of your vehicle, it may be a failing rear differential. Jul 29, 2010 · I took it back to the guy and he fixed it and then off I went. 008 and then I installed a . 6R Limited with SAP, All Weather Mats, Puddle Lights, Remote Start, Body Side Moldings, splash guards, Wheel arch moldings, rear seat back protectors, bug shield and Oct 7, 2021 · This is my brothers 2017 F150 with 5. A howl or whine during acceleration over a small or large speed range is usually caused by worn ring and pinion gears or improper gear set up. Aug 25, 2014 · Noise occurs at 0:18, 0:26, and 0:30. 8 rear differential. He started to notice this noise while he was towing his campe Mar 21, 2014 · 1998 gmc half ton 4×4 z71. 23 and it has Sure-Grip. 8 differential whine,howl,groan,whatever you want to call it. Chenn2389; Apr 30 Apr 14, 2014 · Noise not affected by temperature Cause: Badly worn or broken spider gears Noise: Banging or heavy clicking every two to three feet during acceleration and deceleration Cause: Damaged or broken pinion gear tooth or teeth Noise: Banging or heavy clicking every two to three feet during acceleration or deceleration, but not both Nov 6, 2006 · Excursion - King of SUVs - Deceleration Noise - I have a 2000 Excursion, 2WD, 5. Just like with any mechanical parts, a strange noise is the first sign of a problem and something you would not wish to experience. Aug 21, 2017 · Before that, I had SandCraft try the thing with the differential, purchased their custom carrier bearing, had the prop shaft phased ($600 bucks), and still had the front end that sounded like a giant rock tumbler. Anyone experience this? 2013 3. 0L Rattle noise on deceleration - Hello, I have a 2018 Ford F-150 5. Aug 3, 2011 · If im going down the highway and have the throttle held to where i am not accelerating or decelerating i get this humming noise and I can feel it in the floor. Brg'se more of a rumble/growling noise. Started making like a vibrating noise a few weeks ago, increasing noise. But let off the gas for a bit, and the load, stress, and tension on the pinion, bearings, and races changes—which can exacerbate an underlying problem. Is the decel noise normal to the van and is it differential or transmission related. 73 axle ratio, and 136-145 km/h [85-90 mph] for 3. It happens with the clutch in or out, or with the transmission in neutral. I took it too the dealer 4 times for the same problem. Jan 8, 2022 · We have a 2021 commander xtp 1000 r. and the spider gears all bearings and seals on the differential. almost like a grinding sound coming from the center of the car. Oct 29, 2014 · So I replaced the seals and fluids on both the transmission and differential last week and I started getting a rear end whining noise during deceleration and after searching the web for a while I found that most of the time that will happen when the you have a Loose pinion bearing preload, So if I understand correctly this means the pinion nut is loose and the fix is to tighten the pinion nut Mar 27, 2016 · If there is no noise on acceleration and noticeable whine on deceleration than its most likely the pinion nut not torqued properly and the pinion is getting sucked back into the case when the ring gear drives the pinion. Less than 400 miles so far. 73 regular differential. This puts the gears out of proper mesh and you get the whine. Jan 16, 2017 · Diagnosing Rear Differential Noise There are various situations which can create rear differential noise. Is this normal? May 26, 2021 · The sound is similar. Refer to TIS, applicable model and model year Repair Manual: 2014 / 2015 / 2016 – 2019 4Runner: Drivetrain – Axle/Differential – “Axle and Differential: Rear Differential Carrier Assembly (w/o Differential Lock): Installation” (3) Go to step 7. 6R and when it is cold outside (below 32 degrees Fahrenheit) I heard a subtle whinning noise while decelerating between 30-20 mph. Apr 9, 2010 · I know the STi drivetrain is loud and i really hope i'm not just being paranoid, but today on the drive home from work, under deceleration, the car was making an odd noise. Excessive Noise: A failing differential [both front and rear] will make a whirring noise, whining noise, howling noise, and humming noise. Oct 14, 2010 · I crawled under the truck while my friend turned the wheel in park and it sounded like it was coming from the differential. May 8, 2022 · 2015 - 2020 Ford F150 - 2018 Ford F-150 5. Please evaluate the full driveline including transmission, torque converter (goes off and on in drive with no throttle/sometimes allows car to roll free and sometimes engages and creeps), clutches, transfer case, diffs, etc. First two times were for TSB pcm programming, third time they changed the vct solenoid and the Sep 27, 2011 · Sadly, this is a common problem on an X3. Unless you are under warranty or have the time and $$$'s, it's best to ignore it. The second you get back on the throttle or push the clutch in, it goes away. 25 gears, and a Detroit Truetrac. Oct 30, 2023 · Quieting rear differential noise involves diagnosing the underlying causes of the noise and implementing targeted solutions. This type of noise is commonly caused by a bearing failure in the rear differential. I've rebuild the 9-inch with all new bearings, 3. Sep 18, 2019 · Hey all. Leaks are warning signs too. Jan 23, 2014 · A noise that is heard when the vehicle is taking a turn is usually due to trouble in the axle shaft or a problem inside the differential itself. I can’t tell where it’s coming from but if I had to guess it feels like ujoints , transfer case or differential possible related. This quick guide will … transmission flange and rear driveshaft may experience a boom/hum/moan noise or vibration from the rear while driving. Well, It's been a little under 2k miles since then and now I've developed a whining noise the past few days. This noise goes away when putting power to it or if the engine slows down the machine. i did not change the Aug 28, 2009 · Lets face it, unlikely. I've read through forums and have tried to check the possible causes for the noise, and I think I've more or less isolated the problem to the front differential. Maintained very well and driven normally. On front-wheel-drive vehicles, if noise is isolated to the transaxle, replace the differential carrier assembly and bearings as necessary, referring to Figure 4 , which shows the differential carrier assembly. If the noise is there on either accel or decel but goes away when See full list on bettersoundproofing. It’s possible that the sounds you’re hearing are not differential-related. However, if you are not comfortable doing it yourself, consult a professional. There are various situations which can create rear differential noise. Basically when you lift right off the throttle and coast, it does it. Nov 30, 2021 · And ring and pinion gear noise that occurs only on deceleration is a good example. This is because, without enough lubrication, the moving Feb 16, 2022 · Many people first notice the sound of a failing rear differential. I have a 2004 Rubicon with 101,xxx miles, recently it has developed a howling/growling sound coming from the rear diff, I noticed it a while back but it wasn't bad and thought it was just drivetrain noise, it has gotten worse so I decided to try and figure out where it was coming from, I had changed the fluid on it not too long after I had gotten it almost Jun 30, 2017 · After the overhaul the car was driven and immediately there was a whirring noise coming from the diff, on acceleration, deceleration and cruise speed, the longer we drove the car the worse it got. Oct 16, 2006 · Howling/whirring noise on deceleration at 45-60 mph-DIY axle rebuild Well it may have been inevitable, I'm finally having a suspected problem from the D35. Noise: Howl while decelerating (gears previously quiet) Cause: Loose pinion bearing preload Jun 3, 2012 · It was like faint whining,so with music it's possible you won't hear it. when i say forever I mean I had the rear end rebuilt like two years ago and just finally got everything put back together. Other wheel bearings can cause similar noise as well. 10 axle ratio, 121-128 km/h [75-80 mph] for 3. Basically, its a very loud humming/howling sound which only occurs on deceleration. The case is a 489, gears are 3. Apr 13, 2008 · Dyno tuner had noticed that there was a whine coming from the diff when the car is decelerating under load. . Insufficient differential fluid; An overload when towing; Bad pinion May 1, 2017 · Your noise sounds like gear lash, it happens on decel/coasting because the ring gear loads the trailing edge of the pinion and there's a meshing mis-match or trailing edge wear. i replaced the carries case. It has started making noise when front diff is engaged. This is the original post: I have a '15 diesel with 5600 miles on it. A growling noise may be noticed on deceleration from higher speeds. When you are in between coasting and putting power to the engine, you can hear a clunking noise coming from the rear differential. It's there slightly when accelerating but when I let go of the gas at any speed, in any gear (and this becomes more pronounced at lower speeds), there's a low pitched whirring noise that can clearly be heard inside the car. Lack of Lubrication: If your Jeep isn’t properly lubricated, the components that make up the differential can start to wear down and cause noise. What I've noticed is a whine that seems to be coming from the differential upon deceleration at certain speeds. Leaks. 8 3:55 open differential,129k miles I've got the typical 8. Poor meshing gears = bad friction (as well as various other physics properties) = energy which transfers into noise/heat. e. I would only happen at initial acceration @ about 800 RMPs and deceleration. As far as the noise on accel and decel, it sounds like gear noise since it is quiet on transition between coast and cruise. Assembly (w/o Differential Lock): Removal” (2) Install the NEW rear differential. Nov 13, 2016 · Noise: Clicking while decelerating from 20 miles per hour to a complete stop Cause: Worn carrier case-side gear bores Noise: Rumble or clicking that gets worse during hard turns Cause: Bad wheel bearings Noise: Driveline squeaking or grinding at any speed Cause: Worn or damaged U-joints Noise: Clunking when depressing the throttle pedal (takeoff) Apr 21, 2024 · A low transmission fluid level, broken gears, or worn bearings can all contribute to this noise. Using better quality transmission fluids and flushes seemed to quiet it down a little bit but it never went away. Now it makes a clanking noise when deceleration. It has a 3. But understanding the kind of noise can be very helpful in determining the cause of the problem. It sounds like my truck has big mudder tires on it between 20-50 mph. If the loose pinion nut was letting the pinion gear walk back and forth even slightly that changes the gear pattern and will build in a whine that you may not get rid of without changing the crown and pinion. I am going to take it to a mechanics buddy either this weekend or the next and try to get the plug loose. It keeps making a whirring noise at certain speeds it is more pronounced and it has an obvious deceleration noise as well. Ok Im wondering if the whine is there on decel because im at the low end of the spectrum in Nov 6, 2012 · - Deceleration noise persists even though shifting has improved. Has anyone had this issue before? Mar 11, 2013 · Solid differential mounts will transmit more sound frequencies than rubber as well as driveline lash. Jul 13, 2022 · These trucks use a known good quality differential, so if there is some sort of perpetual issue it's just bad luck and hopefully Nissan eventually just swaps a new one in for you. The transmission Nov 29, 2023 · Possible causes of rear differential noise in the 2008 BMW X3 include worn gears, lack of lubrication, misalignment, and faulty U-joints or drive shaft. My final backlash setting was . If the noise changes if you on the gas or not I would look there first. Even under warranty, most dealers will claim that the noise is normal, and will try to dismiss it. They replaced rear differential assembly on GMPP and now the whine is gone. 4 L, Automatic transmission with 91,000 miles. Mine is only noticeable when letting off the throttle at 70mph down to 65mph and then it's gone. 31 Feb 4, 2024 · Differential Noise On Deceleration. Noticed a noise coming from the rear differential. Nov 6, 2010 · In all seriousness, it sounds like you are on the right track. Apr 2, 2024 · It was noticable but just sounded like some road noise before. Even tho I don't have the LS,will Jul 20, 2013 · Right after that, I began getting noise and feeling a knock from somewhere underneath when decelerating. The rate of the "knock" is proportional to the speed at which I'm moving. The differential fluid may also be leaking Aug 9, 2014 · 4) Based on your original symptom, the grinding noise usually comes from broken spider gear set. But I don't have any experience working on differentials, so I don't really know anything. Accurately diagnosing rear differential noise involves a thorough inspection of the differential components, including the U-joints and drive shaft. Before the differential swap, Polaris had the dealer replace the gears in the differential to no avail. 0 and 6 speed automatic. Its not super bad but bad enough. While accelerating no sound, when letting off it makes noise. My immediate reaction was gtfo I blew the differential. 81k miles, stock differential, daily driver, 6 speed. Differential noise on deceleration can be caused by a number of factors, but some of the most common culprits include: 1. Jan 22, 2007 · I have a 95 M3 and there's a odd whirring noise coming from the back of the car upon deceleration. com Mar 24, 2022 · If you only hear noise when accelerating or decelerating, you may have bad ring and pinion gears. Listen with Your Eyes. That's just the info that I'm finding online. if the noise goes away then you know its the motor making the noise. 0L and I’m experiencing a rattle noise on deceleration. If you’re unsure about what might be wrong with your car’s rear differential or just want more information on how it works, take a look at our “common causes of rear differential noise, troubleshooting, and how to fix it” blog post! Causes of rear differential noise. The guide below will help you match up the noise you’re hearing with the differential or axle component making it—or at least get you in the ballpark. to trace down this noise and Dec 21, 2023 · If the fuel pump fails or clogs, it can cause low fuel pressure and a whining noise when the car slows down. At the slightest touch of the Jun 11, 2004 · like the subject line says im getting whine on deceleration. Dec 24, 2016 · The car is a 2011 Mustang. If I'm stopped, there is no noise at all, it's only when I'm moving. The mechanic found that the metal plate under the truck across the frame was bent up enough that at certain rpms it would rub against the exhaust and cause the noise/vibration. But in most cases, the culprit seems to be the pinion bearing. This noise or vibration is most prevalent at highway speeds (112-121 km/h [70–75 mph] for 4. There is a sweet spot for gear setup that involves pinion depth and mesh clearance between the ring and pinion. My van 2006 high roof 158 has a significant what sounds like gear noise from the rear differential on deceleration or when letting off the accelerator. Jul 9, 2019 · Just checking to see if anyone has experienced any noise coming from the rear of the machine either the differential or the transmission while at cruising speed not sure what speed, but while maintaining an engine speed at 3800 to 4200 rpms while gently accelerating or slowly decelerating noticed it on my first real ride up northern maine very flat dirt roads. I checked and the nut is still torqued, but it's kinda difficult to spin the driveshaft/yoke by hand. The pinion bearing is responsible for supporting the pinion gear, which transmits power from the driveshaft to the ring gear. May 11, 2022 · The differential is mounted in a vise to check backlash and run a gear pattern test to look at the pinion depth setting. i kept the ring gear and the driveshaft gear from the old carrier case. A price we must pay to keep the differential's cover in 1 piece. 5) After repairing, the noise became whine, which is usually caused by ring and pinion gears backlash which should be within 5/1000 - 12/1000 inch. Replacement of the rear differential is often necessary to correct this problem. And once you’ve heard a clunk, howl, whine, or vibration, you’ll want to diagnose it. all you gurus I need suggestions. The noise is often described as a whining or howling noise that increases with acceleration. Jan 15, 2014 · I have a 2013 3. I've completely re-done my rear axle and suspension and it has taken me FOREVER to get it all back in the car due to lack of time. Currently I still cannot get the rear differential screws to budge. In this Tech Tip video you'll learn about why your rear end or front end differential may be making noise May 29, 2008 · Sometimes, the noise is not differential-related, but is caused by other driveline or axle components. It’s slightly quieter than the last time they replaced it but still noisy. If they were properly set-up, whether or not you did a break in, probably wouldnt have mattered at this point. Apr 29, 2020 · A “whirring” noise: A whirring noise while decelerating at different speeds can be caused by the pinion bearings being bad, or a loose pinion bearing preload. U-joints don’t look bad, but I’m going to install new ones anyways. Honestly, no. The total with no GMPP would be >$2500. Most likely coming from the transfer case, drive-line, or rear differential. Pinion bearings usually make noise when they are under load, when you are on the gas. The rear axle / differential were removed for a complete overhaul about 2 years (~1500 miles) ago due to excessive play and leaking seals. Apr 26, 2020 · The deceleration howl from the differential is much more pronounced after it leaking for over a month without my knowledge. It seems like noises/vibrations that occur when decelerating are usually related to U-Joints and/or the rear end. It has the 8. 0L and it was driving me crazy. Drivetrain – Axle/Differential – “Axle and Differential: Rear Differential Carrier Assembly (for Torque Vectoring Differential): Reassembly” ONLY steps 17 – 18 and 25 – 28 2019 – 2020 RAV4: Drivetrain – –Axle/Differential “Axle and Differential: Rear Differential Carrier Assembly Jan 25, 2015 · The new differential, at least so far, is very quiet at speeds and loads that would have elicited a whine from my previous differential. It will generally be a long and uphill battle. I did a search on the various Subaru forums and the deceleration noise seems like a common problem on the 5 Here are some of the symptoms of a differential going bad. Upon deceleration I experience a clunk and slamming noise and feeing in the car. K. A bad axle bearing is usually the main reason for Jan 22, 2016 · A howling differential is one of the worst sounds any car guy (or girl) can hear. To sort out a bad fuel pump, replace it with a new one. 2022 Frontier Pro4x Glacier White Pro Premium : Nismo Front/Rear Suspension and UCAs - Z1 Shackles - Nismo wheels with Wildpeak AT3Ws - Nismo Exhaust - AFE Intake May 7, 2023 · Based on what I've read/heard, the pinion bearing would make noise during deceleration or all the time, whereas gear noise occurs when load is being applied. Apr 3, 2017 · Bought this beauty 2007 AWD last tuesday, drove it home (250km), parked it for the night, worked my night shift, slept most of Wednesday, hopped in it Wednesday evening to take it for a spin and noticed a quiet sound on deceleration which got louder and louder fast. Dec 1, 2008 · A ticking noise on deceleration from about 20 mph (32 km/h) to a stop may be caused by the differential ring gear. The van has about 240k on it. Jan 17, 2022 · Hi all, So I've been doing some work on my 66 Galaxie over the winter months and got her back on the road the other day. Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears. Sep 24, 2005 · Differential noise One thing to look at would be your pinion bearings. Step 4: You can use chassis ears in place of a car diagnostic stethoscope to check for noise in your differential. It is similar to a rumble strip. The pump is trying to compensate for inadequate pressure by working harder. The noise may also be accompanied by poor acceleration, rough idling, stalling, or difficulty starting. It happened on the way back from a 275 mile trip with the atv's. Metallic Noises. Chalk me up for another that has a slight whine on decel. Apr 12, 2013 · Question is is the noise coming from the motor or the differential to figure this out drive the vehical and while it is humming shift it in to neutral if the humming noise is still present then it would be part of the drivetrain. Before I had replaced also motor mount and differential bushings. The noise is only on deceleration off throttle/coasting, nothing while acceleration or under load. The sound seems characteristic of a Aug 10, 2022 · So what’s the reason behind the noise when decelerating? Noise when decelerating can be a cause of damaged parts. This video chronicles what I went through to diagnose a whining noise coming from the 10 bolt (8. Noise\excess heat comes from the gears contacting eachother incorrectly. For example, howling of gears is a sure sign of wearing. Any one know anything about this ? Sep 9, 2019 · Whirring noise only while decelerating at any or all speeds is most likely caused by bad pinion bearings or loose pinion bearing preload, and almost never by bad ring and pinion gears. If the gears inside the differential are damaged or worn, this can result in a whining noise, especially when decelerating. From checking fluid levels and replacing worn components to adjusting gear lash and addressing differential backlash, each step plays a crucial role in minimizing noise disruption and promoting a quieter driving experience. That doesn't necessarily mean there is a disorder or that you'll suffer a gear longevity problem. This is usually diagnosed as a bad ring and pinion gear. hf rb uj qc ob ab sn re ct tp