Ok, it turns out the whining noise is coming from the transfer case- indie put car up on lift and ran it. In the forum you will find an informative tech area, a place for Member’s journals, Vendors with special Members pricing, and more!. The noise sounds like it is coming from the front differential. 3gdi awd htrac 2018 model. Hope that pesky rear end noise is gone for good!! :judge: IMHO well worth the time and money!. SYMPTOM/CONDITION: The customer or technician may hear a whining noise coming from the rear axle area. If it's there on acceleration, you're likely looking at worn ring and pinion. Rear Differential Noise vs Wheel Bearing Noise Because bearings are incorporated in each wheel and also in differential, most of the times it's very tricky to discover if the the noise that is produced is a rear differential. i have a 2016 Movano MWB that has done 30k miles i have had from new. When the drive line is not in there is no noise. I own genesis g80 3. I appreciate the old 'TATHS' responses when it comes to the last Ford diffs so I wondered if anyone had tried tackling the issue by fitting sound deadening to the boot area and / or the panel that sits behind the seats. Jack up the rear end and support if correctly with jack stands. Usually it is axle bearings, differential bearings, and pinion bearings that will generate a howling or whining noise. Once you are sure its not the tyres, drive it at 60kph and swerve from side to side fairly violently. Noisy BMW 3 series E90 rear diff and axle whine posted on 10 May 2014 | posted in BMW Differential and axle noise The common rear axle noise found on the BMW E90 3 series cars is caused by bearing failure in the differential unit. Explorer sport trac rear end whine. The car must be moving and it seems to appear in all gears. The noise can't be heard at idle, but you can start to hear it after bumping up the throttle a bit and gets a little louder the higher the rpms. The most recently reported issues are listed below. What causes limited slip differential noise? Chatter and vibration are symptoms of a worn or damaged internal components. SYMPTOM/CONDITION: The customer or technician may hear a whining noise coming from the rear axle area. The whining noise was there before my bearings were replaced and remained there after my bearings were replaced. Sometimes a differential, but often tires. all you gurus I need suggestions. My differential was making a howling noise when i accelerated, started at about 65,000 miles and got a lot worse by 70,000. Putting my LSD in, 2 new pinion bearing, a new pinion seal and new oil only cost me $350. The techs confirmed the sound is coming from the diff and contacted Toyota. The sound level can bring minor annoyance, or foretell serious part failure. I am experiencing a knocking type noise at low speeds (1st/2nd gear speeds) which seems to be coming from the area of the rear axle/differential. The most effective approach to reduce the noise radiation from a gearbox is to perform a. The 2002 Ford Explorer has 31 problems reported for differential whine. Power steering pump noise is one of the most identifiable sounds your car can make when it is broken. The whine noise is really loud and still looking for a way to quiet it down. 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. But when I engage four wheel drive it stops, could this be the front diff on its way out?. the chassis using U bolts. - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. While there I mentioned that there is a mild whining noise in the drivetrain when driving at around 75-85km/h. Clunk noise in rear end; Diff Fluid Question, reference aftermarket oils. I have a E class W211 with 75,000 Km (47,00 miles) and the Differential Drive Gear Box is giving a whining noise. When I picked her up over 10 months ago the rear diff was very quiet. You may try to swap front and rear tires to see if the noise stays or moves to the front. The main cause of the whine you can hear in your 1 series BMW rear axle is caused by the pinion bearings failing. I noticed a speed-dependent whining sound coming from the rear of the car over the last week. Diagnosing Differential Noise. 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. A bad axle bearing is usually the main reason for. That gets to be very labor-intensive and costly so it's much more common to just get a used axle assembly from a salvage yard. also the vehicle was not greased on the drive shafts so I had to give those a shot of grease. A worn out power steering hose might've bled fluid out over time to the point where the system is struggling. How to rebuild your BMW differential and stop it being noisy November 18, 2014 · My BMW M3 E90 rear differential makes a "whining" noise at between 40 mph and 50 mph in any gear. 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. Having posted on Benzworld several times about an annoying whining noise coming from the rear, I finally got up the courage and replaced the rear Differential. The noise can't be heard at idle, but you can start to hear it after bumping up the throttle a bit and gets a little louder the higher the rpms. • Regular “clunking”. Reducing gear whine noise to an acceptable level is a big challenge, especially for complex gearboxes like the modern planetary automatic transmission. I replaced the rear diff fluid (prior was Amsoil full synthetic), but same whine. Where as a wheel bearing will not change noise wise. I own genesis g80 3. Alternator whine is almost always caused by a ground loop. im sure the bearing is fine only the gearbox is making noise especially when i rev up to 50 mph. I just changed my diff and t-56 to royal purple. Hello, I have a whining noise coming from the rear of the truck. Had it replaced at 5200 miles with the newest part number, but it did not clear the issue - the new one whines, too. Most common cause of rear diff whine is internal gear damage, if that's the case you are looking at a rebuild or replacement of the rear diff. 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. As I said before I replaced the carrier bearings and axle bearings with no result. So here is an update: The whine went away after a hard rain, but slight grinding noise has started from the same area. MODELS: 2015 - 2016 (LA) Dodge Challenger 2015 - 2016 (LD) Dodge Charger 2015 - 2016 (LX) Chrysler 300. I originally replaced the diff fluid with Amsoil 75w140 and the noise was greatly subdued at some speeds, and eliminated at other speeds. " Three! The sound did indeed become louder, until a new deceleration sound developed. There is a whine coming from the diff. Engine noise makes us more nervous than any other automotive sound because noise can mean expense and inconvenience. 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. I bought all new components for the rear differential. Explorer sport trac rear end whine. It doesn't do it when sitting idle or driving down the road, just when I accelerate. I had the transmission serviced with a new filter and and synthetic fluid, but the whine continues. Remove the fill plug,. In the present work we combine UV and radio observations of the quiet Sun to determine the differential emission measure (DEM) of the average quiet solar atmosphere from the photosphere (5600 K) to the corona. macca33 10-04-2007, 02:04 PM. I droped my car off at ford this morning for the recall job, and they recon that it is not common at all and that there is no additive that they have or can put int. You could even pull the diff cover and inspect the wear pattern. so i have just recently started noticing a whining noise with moderate to higher rpms in first gear, it does go away in the other gears, but its very noticeable in first gear. The clunky sounds have gotten a bit less ever-present, especially when the transmission has warmed up a bit, but it is still pretty much always making a whining or light-grinding noise. 73 not my 4. Not the end of the world. After some reading I decided to check the front diff. Anyone else have a whining rear end and if so, was it corrected and what was problem?” “Yes we had it too. 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?. You let off the gas and it stops and it doesn't do it in neutral or park. Most common cause of rear diff whine is internal gear damage, if that's the case you are looking at a rebuild or replacement of the rear diff. Unfortuneatly, if there are many miles at all on the gearset, they don't like to have their adjustments tweaked. It is easy to confuse this with lubricity but it is not the same thing. Several months ago I noticed a distinctive whining/humming noise coming somewhere from the engine compartment of the car while driving. He also informed me that they were going to do nothing about it as it was not a mechanical failure. They recommended replacement with new for $4,000 (parts+labor). 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. OVERVIEW: This bulletin involves inspecting and replacing the propeller shaft due to a whining noise at high speeds. MODELS: 2015 - 2016 (LA) Dodge Challenger 2015 - 2016 (LD) Dodge Charger 2015 - 2016 (LX) Chrysler 300. Remove the fill plug,. Mine did/does it as you describe. If you try to listen out the window, you can't hear it. It seems to be coming from the diff and maybe since the subframe mounts are old, the noise is being transmitted more effectively to the cabin. Hi All I am all new to this as I have ran out of ideas of what to do next. My diff has always had a bit of a whine at highway speed, nothing serious. The truck has a whininy noise coming from the front of the engine. It would be an expensive fix so the mechanic is telling you to live with it. Rear End Noise - High Pitched Whine - YouTube Thanks!!!-DJ My 2017 Scat Pack makes a resonance at about 85+ mph. You may have to register before you can post: click the register link above to proceed. Low fluid levels are usually the cause of the irregular wear. Once the whine is present, there really isn't much you can do to make it go away short of replacing the differential (which obviously isn't cheap). This video shows a classic example of BMW 1 series diff noise, whining on and off acceleration. In the present work we combine UV and radio observations of the quiet Sun to determine the differential emission measure (DEM) of the average quiet solar atmosphere from the photosphere (5600 K) to the corona. The loudest hydro whine I ever heard was a Bx. Gear whine, bearing noise and clunking are common rear differential noises that should be a concern to vehicle owners. I even brought it back a second time after the bearings were replaced and everything was adjusted to the proper specs. The noise is wheel speed dependent, not engine rpm, and it happens when driving at a constant speed within that 75-85km/h range. You let off the gas and it stops and it doesn't do it in neutral or park. I have a whining noise coming from the transmission. How to Service a Dana Posiloc 9. Maybe I am wrong but the sample will tell me if abnormal wear is happening. Sprinter Differential Noise - Axle Replacement Posted on by One of the fleet of Sprinters I maintain had developed over time a noticeable rear end wine/noise type vibration that changed note on overrun, there was a high likelihood there was some issue with the differential and further investigation revealed the pinion had worn allowing the. 6 quarts in the rear end/no FM, 4. How about:-> exhaust drone, or exhaust viberation 10 year old rig less than 10,000 miles exhaust could be rusting out. You should take. I thought that it most likely is the diff since I get a fairly similar sound on my Lotus, which is fitted with an aftermarket Qaife LSD. Replace Ring and Pinion with Axle Kit and Components. I am in the camp that says most of the whine was the differential and some gets eliminated in the new driveshaft design they did. To sum it up, I had some strange whining noises coming from the tranny, and subaru quoted me 3500 to fix. I replaced the rear wheel bearings and oil seals for both rear axles, but it did not stop the noise. That was a few years ago, now the our new diff just groaned!!! Going to print and take these bulletins to the dealer and hope they can fix the problem before it costs another $3000. RE: Whining noise - rear differential IP: Logged Message: Go to the Dodge dealer parts department, get two of the bottles of friction modifier. Hi All, my AU2 (beam axle) has developed a whine noise at 65000k's. The whine is noticeable to me but can be drowned out by the radio volume. This seems like a very common problem with these cars. Pepper or egg white in the radiator. if you hear the noise while you accelerate and get of the petrol it's usually a gear backlash or worn gear issue. If someone could clear this up:the noise happens in and out of gear, mainly at around 40-45 mph the noise comes. How to rebuild Mercedes-Benz differential. Transmission Making a Whining Noise. i would check and change the oil first, i would bet the oil in the diff has never been changed. I have read on here and on Fordforums. New bearings, new carrier, new spider gears, new axle gears, new ring gear and pinion. After some reading I decided to check the front diff. they claim the rear diff can make that noise if the breather tube has an issue of the diff oil is almost gone. A simple thorough inspection of the transmission, differential and power steering system will reveal if there are any bad bearings. 0 ghz which made no whine noise at all, but decided to overclock to 4. Various experts, including miata specific techs and a diff guru have told me that it's normal for a slightly worn torsen to be a little noisy and it's completely ok, but I am just slightly worried. Sometimes, people confuse this with tire noise and ignore it. Sounds like a power steering pump, but the pump has been replaced twice, along with the idler pulley and the tensioner pulley, but it still is making the same noise. Q7 Discussion - 2014 Q7 Front Differential Fluid Change - My car has 25k miles and when I accelerate and turn from a stop I could feel a knocking in the steering. I honestly thought it was a bad center support bearing,but I replaced it along with all the u-joints(with American made parts!). The differential serves a key function, which is to prevent wheel hop during tight turns while still delivering the engine's power to the wheels. Appearently its pretty common in AU series 1's. The grinding noise when you tightened the bolts again suggests a bad throwout bearing or possibly the input shaft bearings are going also. 6 quarts in the rear end/no FM, 4. but if its a constant noise its most likely to be a bearing problem. Refer to the Repair. And, sometimes engine noise is nothing more than a normal dynamic of the engine. i have a 2016 Movano MWB that has done 30k miles i have had from new. The jeep is the quadra-trac with all time 4wheel drive. remove the differential cover and drain the differential. The best way to describe what it sounds like is when you have a set of loud tires that when you are driving down the hyway, make a high humming noise. It really hasn't gotten any louder/worse during that time (more or less a year). Jack up the rear end and support if correctly with jack stands. I would be very happy about a rating with 5 stars over the star bar at the top of the page, without this rating the site operator does not pay us experts. That sounds distinctly like rear differential whine. The fluid can also leak into your drums so look at the tires on the insides for wetness, sign of diff leak, or brake fluid leak. Any other advice. The higher in Mhz a device works the more prone it is to Oscillating, producing an audible whine or sequel the human ear can sense. Putting my LSD in, 2 new pinion bearing, a new pinion seal and new oil only cost me $350. Well, it's definitely a noticeable whine which really spoils the otherwise quiet freeway ride. whining noise in rear end ooppps sorry my vehicle is a 03 GMC Envoy SLE. This guide 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. and when i let off my foot on gas pedal, i didn't hear any whining noise and when i let my foot on the gas pedal again, i can hear that noise again. If the fluid level in NOT low, then the diff and or bearking need attention. Usually covered in grey oily crude to a depth of about 3 to 4mm. If I release my foot from the gas pedal on the highway, this noise goes. I absolutely love the car apart from one thing and that is a whining noise from what I have being told by a Audi tech is the Gearbox. On the other hand, nobody ever died from a bit of gear whine. Transmission Noise. I plan to replace the input pinion bearing. You may be able to even see it from pulling the plug. even if you dip the cluch and knock out of gear it is still there. Anyone else. Incorrect gear mesh can also make that noise, usually the result of incorrect pinion depth. Sometimes, people confuse this with tire noise and ignore it. I am experiencing a knocking type noise at low speeds (1st/2nd gear speeds) which seems to be coming from the area of the rear axle/differential. Three separate sources said “it might be your front differential, it’ll just get louder, don’t worry about it. Insert new (different) carrier, reinstall axles, new lube in, and car back on the ground. BMW 135i Differential Hum/Whine from BMW Ihaveone on Vimeo. So I was thinking of putting a heavier gear oil in the rear diff to see if the noise changed; if it did I would know that's where the problem is and it might buy me some time. Just picked up some more today to give that a try and see if the noise goes away. The source of the noise may be a damaged transmission coupling assembly and two ball bearing assemblies. But, that noise isn't good. net is a Web site dedicated to ham radio (amateur radio). It sounds like a differential going -- like when my old 3 series bmw rear diff went 15 years ago. oil was gray and had black specs in it. The transmission shifts fine everything else drive wise is perfectly fine. (Page 1 of 2). net Article: Alternator Whine - Can this advice from K0BG save you from annoying noise while mobile? - eHam. We're not totally convinced it's the rear differential - although the symptoms point to it. However, GM has paid little attention to us and not provided us with a fix for this problem. I don't hear any thumping or noise during heavy loads. later this morning should know for sure,i just want it right ,did not pay mega money,but i have have to see trading standards as well ,to see if there is any come back 182 miles since picking it up from the garage. While riding home from work today, I noticed a pretty loud whining noise I believe is coming from the trans. When I let off of the gas, the noise stops immediately and completely until I place my foot back on the pedal and continue accelerating, then picks up where it left off. The noise may change while turning. Learn more about limited slip differentials, diagnostics, and rear differntial noise heard in the rear unit. NOTE FOR 1999 AND PRIOR MODEL YEAR VEHICLES, USE THE 2000. But if the bearing or low, to noe, or very thin, worn oil will cause the moving sound you speak of. The noise can't be heard at idle, but you can start to hear it after bumping up the throttle a bit and gets a little louder the higher the rpms. Learn about this problem, why it occurs, and how to fix it. This results in gear whine under acceleration. Acura RDX: Engine Noise Diagnostic Guide. My torque arm was cracked and doing this. I went about 40k in-between diff fluid changes. Its the actual slip diff additive Im after. it is not the actual diff making the noise, it is the nut on the pinion gear. Cadillac CTS owners have reported 113 problems related to differential unit (under the power train category). ok so i had what i suppose is the 'typical' differential whine as its going out. I droped my car off at ford this morning for the recall job, and they recon that it is not common at all and that there is no additive that they have or can put int. I put the front end on ramps, and jacked the rear end up on the rear control arms (this will be helpful later on). The solution is to move the pinion gear closer to the housing. even if you dip the cluch and knock out of gear it is still there. I just replaced the transmission and rear diff fluids as preventive maintenance, though the noise was happening before I did the fluid flushes. The noise is present even while driving in a straight line. Fluctuating level of whining when decelerating and coming to a stop. If the pinion gear is too shallow, the gear mesh rides high on the ring gear teeth. Its only slight. The whine in my rv fills the cabin equally, nicely hiding its source, like a well designed sound system. it sound like i have a TC or SC. I have an 01 F-150 5 Speed and I can hear this whine coming from the rear end when I am pushing on the accelerator. Read your user's manual and I believe you'll find it says to change the differential fluid every 30k miles or so, which you should do, or risk damaging the differential. This video shows a classic example of BMW 1 series diff noise, whining on and off acceleration. Mine's a D70, a little lighter than what you've got. Rumbling or whirring at speeds over about 20 mph can be caused by worn carrier bearings. Fixed it myself. After some reading I decided to check the front diff. There is whining noise under acceleration, cruise and deceleration at speeds over 20mph. 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. If I put it in neutral while going down the road, it will instantly become silent. Just picked up some more today to give that a try and see if the noise goes away. Either bearing noise or gear noise. I have read on here and on Fordforums. Terrifying to say the least. A differential will make a whirring, whining or growling noise if one of the bearings is worn or the ring and pinion gears are worn or meshing improperly. If you are starting to see a second mark in the gears, the mesh has changed. axle assembly to repair an axle whine/hum. Land Rover LR2 Rear Differential Repair Kit. UPDATE: HELP Humming/Whine Noise in front end 4X4 UPDATE: I just checked the fluid in the Transfer Case and it was completely empty. Answer: Going by your description, it's a typical gear whine from the ring and pinion gears in the rear axle. 25 chrysler), makes some noise under acceleration, more under coasting. It's pretty loud and definitely wasn't there a couple of weeks ago. It comes and goes, it seems like after it sits for a while that the sound kicks in. The noise level is light and only audible when no AC or radio is on. Since then, the noise has not diminished. I've been fooling with my rear diff. Turned out to be a loose guard above the drive shaft. First thing you should do is have the axle fluid level checked. We had to have the rear differential gear set replaced (under extended warranty) and the gear lash re-adjusted. Very disappointing. Similar to a wheel bearing, the noise will change with vehicle speed. I droped my car off at ford this morning for the recall job, and they recon that it is not common at all and that there is no additive that they have or can put int. Usually it is axle bearings, differential bearings, and pinion bearings that will generate a howling or whining noise. - Answered by a verified Ford Mechanic We use cookies to give you the best possible experience on our website. The noise is loud enough to hear over the radio. 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. The whining noise that was heard inside the bus was so high that it caused headaches and extreme discomfort. The whining noise goes away once im cruising on the open roads, but is there going up thru the gears at the lights ect, low in the revs. I own genesis g80 3. It could be because the differential warmed-up due to this drive being highway speeds? Honestly, I believe it is reduced at least 75%. Here we take a look at changing the Rear Wheel drive differential Axle Gear oil for most Non Front-Wheel-Drive automobile. is it really worth the $110 for them to change the rear diff oil?. It calls for your typical GL-5 90w oil. I do have a aftermarket Stern "Power Ring" for the rear diff mount. light throttle, any gear, about 43mph. I took a test drive with the customer, and the whining noise was. com of an additive that you can get from ford that you put in your diff to cut out diff whine. Front differential issues are common among 4Matic models and are quite common on 2006-2012 Mercedes W164 (ML) X164 (GL) and. What is that wind noise on my Subaru and how can I make it stop! One of the typical things that will happen to your Subaru is over time you will hear an increased amount of wind type noise coming into the cabin area of the car especially at freeway speeds. I originally replaced the diff fluid with Amsoil 75w140 and the noise was greatly subdued at some speeds, and eliminated at other speeds. I am experiencing a knocking type noise at low speeds (1st/2nd gear speeds) which seems to be coming from the area of the rear axle/differential. I'm not going to get into a long explanation of how differentials work, as we are mainly concerned with noises from the differential. Legacies might have better sound insulation than my GL/GL-10s, so you may not be able to localize the noise as well. axle assembly to repair an axle whine/hum. The car is in pretty good shape, but has a whine I think in the rear diff, pretty loud over 50 mph. Although the hints are often subtle, most impending failures give fair warning in the form of noise. 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. Most common cause of rear diff whine is internal gear damage, if that's the case you are looking at a rebuild or replacement of the rear diff. 5 quarts in the tranny. For many years the differential in my 1978 Jaguar XJ-S has exhibited a slight whine after the differential oil has warmed up. My Colorado recently has developed a whine from 60mph-68mph. Its a faint whine, If it was a gearbox related issue, would the noise still happen out of gear with the clutch down?. Is it AWD? As Rickman states, it may be the rear diff. I thought that it most likely is the diff since I get a fairly similar sound on my Lotus, which is fitted with an aftermarket Qaife LSD. The most common bearing whine noises comes from the roller bearings that support the drive and driven sprockets which the drive chain rides on. Evening all This may be an old topic but I'm trying to come of with a way of reducing the volume of the diff whine at cruising speeds of 50-60mph. NOTE FOR 1999 AND PRIOR MODEL YEAR VEHICLES, USE THE 2000. We had to have the rear differential gear set replaced (under extended warranty) and the gear lash re-adjusted. Sometimes a differential, but often tires. My question is, would a fluid change help the whining, assuming the fluid level is good? Or is the diff compromised?. I've had a noticeable (but not loud) whine under load at 50-70 mph for the last 10k miles or so. Ford's solution to the problem so far has been to replace the rear axle, but some consumers are reporting that the noise re-occurs shortly after the axle replacement. When I take foot off gas the whine goes away. Any other advice. Your whine is likely the planetary gears in the transmission--GM is (in)famous for this. This will cause the spacing between the gears or backlash to be too wide making them whine. compare to my 1989 190 i could not hear any. Well as far as I'm aware you essentially throw a banana inside the diff housing and the added thickness of the banana will stop the diff from whining. Differential or transmission are whining One of the symptoms that is most commonly associated with bad or failing differential or gear oil is a noisy transmission or differential. With mine there is no noise change when turning and it seems loudest at 55-70mph. Learn about this problem, why it occurs, and how to fix it. The whine noise is really loud and still looking for a way to quiet it down. I've had the same problem with whine since I bought mine. Ring and Pinion Problems •Will show up as whining or howling noise that changes when going from acceleration to deceleration. 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. i would check and change the oil first, i would bet the oil in the diff has never been changed. There are no other diff noises at other speeds so it may be early in the wear process. if you hear the noise while you accelerate and get of the petrol it's usually a gear backlash or worn gear issue. At the end of August 2014 I started hearing a whining noise coming from the rear end and I only hear it when I accelerate the car. i was going through a place that had concrete barriers on either side of the truck, and the noise sounded like it was coming more from the front end at that point, but after i got back out into open space it went back to sounding like it was coming from the differential. I purchased the car about 6 months ago, and a few months after that noticed a slight whining noise coming from the engine. Just recently my transmission started whining. sounds like tire noise, but is not. To be sure I can still hear the diff -- no diff that can handle the Hellcat's engine output is going to be a quiet diff -- but the noise is no where as bad as it was. light throttle, any gear, about 43mph. Much quieter now but still not as quiet as a DC Cart so I think the AC motor does whine abit. hello everyone my car started making a whining noise at about 60mph cant notice it any lower than that its not super loud and i cant hear is with the radio on i drive a 2004 wrx no mods except cat back exhaust. 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?. today and determined that it is gear noise. when the car is coasting in gear but goes away with the drive train is under a load. The techs confirmed the sound is coming from the diff and contacted Toyota. i was going through a place that had concrete barriers on either side of the truck, and the noise sounded like it was coming more from the front end at that point, but after i got back out into open space it went back to sounding like it was coming from the differential. 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. A differential usually makes a whining noise (much like the ex ) that increases in pitch with speed. I just changed my diff and t-56 to royal purple. Reducing gear whine noise to an acceptable level is a big challenge, especially for complex gearboxes like the modern planetary automatic transmission. 3gdi awd htrac 2018 model. It really hasn't gotten any louder/worse during that time (more or less a year). Did you look at the end play and up/down/side to side play at the diff gears and the axle bearings? If you need gears make sure to let a pro do the setup. The noise does not increase when turning the wheels at a stop. Evening all This may be an old topic but I'm trying to come of with a way of reducing the volume of the diff whine at cruising speeds of 50-60mph. Maybe I won't trade this truck in now But the rear diff is as loud as before. The whine is noticeable to me but can be drowned out by the radio volume. they claim the rear diff can make that noise if the breather tube has an issue of the diff oil is almost gone. That sounds like rear diff gear or bearing noise. 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. What I did was pull the carrier assembly out start my truck and put it in drive. My diff has always had a bit of a whine at highway speed, nothing serious.
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