ACR gear/diff whine - how much is normal without carpeting?

[Rapidrezults]

I know that the ACRs without carpet and extra insulation it is expected to hear more noise overall, however, I wanted see what others are hearing as normal in their ACRs.

I've started to notice this whining noise when i'm in 6th gear at low RPM. Any other gear it is difficult to hear because of my exhaust, however, it goes away completely when letting off the throttle. I can only really hear it in 6th gear. I talked to a friend who has an ACR and says his doesn't make any noise what so ever, but he has a 1 of 1 ACR with full carpeting/insulation.

Also, I don't believe my build date is within the known diff issues time frame.



https://www.youtube.com/watch?v=dFhmz0rMVLE&feature=youtu.be

[swexlin]

Several diff whine threads on this forum. I have "some", but need to be in 5th or 6th at 60+ to hear it, but it is there, and does get a little more at 70+. If I had less insulation like your ACR, would hear it more.But listening to yours, it is much louder than mine, insulation or note. A few here have had diffs replaced under warranty. (If you think we're bad, take a look out our Challenger brethren with Getrags, many threads over there, and most seem to have it, more than others). Mine isn't enough to really warrant anything right now, but I will keep an eye (or ear, LOL) on it during the warranty period.


But back to the topic at hand. Bottom line is that *some* of these Danas will whine, some more than others. But....yours is pretty loud, almost a howl. If it starts to REALLY howl, than obviously it is an issue. As above, it wil be exacerbated by the lack of insulation on the ACR. Sorry couldn't be more help. You could probably get it replaced under warrant, and if I were you, I'd have it looked at. Take a tech for a ride with you, I'll bet they'll order you a new rear end..

[Rapidrezults]

Several diff whine threads on this forum. I have "some", but need to be in 5th or 6th at 60+ to hear it, but it is there, and does get a little more at 70+. If I had less insulation like your ACR, would hear it more. A few here have had diffs replaced under warranty. If you think we're bad, take a look out our Challenger brethren with Getrags, many threads over there, and most seem to have it, more than others. Mine isn't enough to really warrant anything right now, but I will keep an eye (or ear, LOL) on it during the warranty period.

But back to the topic at hand. Bottom line is that *some* of these Danas will whine, some more than others. If it starts to really howl, than obviously it is an issue. As above, it wil be exacerbated by the lack of insulation on the ACR. Sorry couldn't be more help. You could probably get it replaced under warranty.

Great feedback. I want to avoid warranty work if it's not a necessary fix. I don't mind a little whine, because I can always turn the tunes up. :) Just want to get a gauge for what's "normal". Thanks.

[swexlin]

I edited my post slightly above, after you read it. Listening to yours again, IMO, it's louder than normal, but like you, I don't know what's normal in an ACR! So hopefully others will chime in.

[Garron]

Diff is done, there is a recall for diff replacement on the 16's you may want to call your dealer with the vin.

It is very easy to replace if the dealer knows what they are doing.

[Voice of Reason]

That noise would drive me crazy, no amount of carpet or padding would cover that up enough. My diff is still silent at 11k miles.

[KB Viper]

Chris, that's too much whine. I took a ride in a ACR a couple weeks ago and it didn't have any of that whine, you need a new diff.

[swexlin]

Will be covered under warranty, recall or not. Chris, what speed were you traveling when you took the video?

[7TH_SIGN]

Rapidrezults thank you for that video. That is louder than I thought it would be when reading other owners comments on the topic. How many miles on your ACR?

[XSnake]

Diff is done, there is a recall for diff replacement on the 16's you may want to call your dealer with the vin.



Whats the recall #? I'm not aware of one.

I would change the fluid in the diff to a quality fluid and see what happens. I'd recommend that to everyone whether they they think they have noise or not.

[ViperJon]

Diff is done, there is a recall for diff replacement on the 16's you may want to call your dealer with the vin.

It is very easy to replace if the dealer knows what they are doing.

That's news to me, I haven't seen or been notified of an across the board recall.

[swexlin]

That's news to me, I haven't seen or been notified of an across the board recall.

Jon, I believe it was only a small number of VINs. However, this could easily be covered under warranty, even if it's not on the recall list. All Chris has to do is take the tech on a ride!

[ViperTony]

Great feedback. I want to avoid warranty work if it's not a necessary fix. I don't mind a little whine, because I can always turn the tunes up. :) Just want to get a gauge for what's "normal". Thanks.

Based on your video that whine is not normal at all. I would take your Viper to your dealership/tech and begin documenting the issue.

[Rapidrezults]

Will be covered under warranty, recall or not. Chris, what speed were you traveling when you took the video?

I believe between about 65-80 - somewhere in there.


Rapidrezults thank you for that video. That is louder than I thought it would be when reading other owners comments on the topic. How many miles on your ACR?

1500 miles on the car now.


Whats the recall #? I'm not aware of one.

I would change the fluid in the diff to a quality fluid and see what happens. I'd recommend that to everyone whether they they think they have noise or not.

Not sure if it has been officially put through the systems yet but there is an apparent recall for cars built between Dec '15 and March '16. My car was built much earlier than this, so I didn't think I would have a problem.

The story is that Dana was putting the wrong fluid in the diffs causing them to burn up typically in under 500 miles. I've heard video of a friend that had one burn up as a result of this 'recall' and the whine was much much louder at only 500 miles.

[Coloviper]

That is how my 06' was when they replaced bearings, realignment, etc. whine when loaded and no whine when coasting. Having said that, yours is a lot louder than mine was. I would take it in and let Dodge worry about it.

Your video made my laugh and reminisce back to when I was 14. I moved one of my Dad's CAT loaders between two gravel pits 4 miles apart. 30 miles an hour in top gear. The gear whine and tire howl sounded as loud as in your video. Funny how a sight, sound or smell can bring back memories.

I am not sure it is fluid issue do much as this car has insane torque. Hard shifts, missed shifts, tracking, etc. this will all put pressure on the drivetrain. Things happen! At least it is easy to fix.

[Rapidrezults]

Here is my friends ACR with diff whine under 500 miles.


https://www.youtube.com/watch?v=_iclVdptV4o

[swexlin]

Chris, that one was even louder than yours - that was crazy!

[Policy Limits]

Would drive me nuts. Mine is very faint only in high gear at throttle. Yours is too loud and the second video is ridiculous. Definitely doesn't make u want to run out and drop a buck and a half on a new one. Hope it gets sorted soon. I'd open a ticket with FCA. I did so on my airbag recall, door handle campaign, u connect recall, defective horn, WIN module replacement, key fob reprogramming, engine contamination and oil consumption manufacturer campaigns. Lmfbo sigh.

[ViperJon]

Here my friends ACR with diff whine under 500 miles.


Chris that was also in 6th gear and low RPM's?

[Rapidrezults]

Chris that was also in 6th gear and low RPM's?


Yes, 6th gear 18-2500 rpm.

[XSnake]

That's news to me, I haven't seen or been notified of an across the board recall.

Because there isn't a recall. Posting false info on the forum is dangerous. We'll have 20 people from the forums calling dealerships on Monday morning asking or demanding a new diff under a non existent recall, then getting pissed at their dealership for not being knowledgeable. Yes, there have been some diff issues. They are taken care of under warranty, there is not a recall. Big difference.

[Space Truckin]

Because there isn't a recall. Posting false info on the forum is dangerous. :hog:

Yes, there have been some diff issues. They are taken care of under warranty, there is not a recall. Big difference. :t1236:

^^^This^^^ BTDT

[Rapidrezults]

Because there isn't a recall. Posting false info on the forum is dangerous. We'll have 20 people from the forums calling dealerships on Monday morning asking or demanding a new diff under a non existent recall, then getting pissed at their dealership for not being knowledgeable. Yes, there have been some diff issues. They are taken care of under warranty, there is not a recall. Big difference.

I think you're right, recall isn't the right word, known problem is. The fact that they actually called "Donk" to request him to take his car in to get parts fixed on the diff is as good an indication that there is a known problem. If there is in fact an RRT as the post below mentions, than I think it is important that people call their dealers assuming that the build dates are within the time frames indicated, especially if they are tracking these cars regularly. Last thing I would want is my diff blowing while on track, hence the "RRT" indication and urgency. My guess is the only reason why they don't want to classify this as a recall is because of the panic that will ensue and maybe a few in the timeframe will be "good".

http://driveviper.com/forums/threads/13820-Just-got-the-call-Another-recall-2016-Diff?highlight=differential

Also, to quote Roadrunner in the thread:


Was visiting for daily driver maintenance, so I asked about this today. My dealer said... there is a RRT for the rear axles built on or after December 09, 2015 (MDH 1209XX) and on or before March 16, 2016 (MDH 0316XX)


Also said that they need to be on a VIN list before it will be replaced.

There is no disputing the fact that there is a known problem with the manufacturing between certain time periods of these diffs. I just got off the phone with another local ACR owner and his car was built in Jan and it is howling like a wolf trying to find its pack. He just figured it was related to "because racecar" and didn't pay attention to it, like I did for the last 500 or so miles.

[swexlin]

An RRT is a "Rapid Response Transmittal", kind of an internal thing for a known issues. I had one once for coolant on m 07 SRT8. Corporate submits a VIN list.

But the others are correct, the several people on this forum who have had howling diffs had them replaced under warranty no VIN list or RRT needed.

[Rapidrezults]

An RRT is a "Rapid Response Transmittal", kind of an internal thing for a known issues. I had one once for coolant on m 07 SRT8. Corporate submits a VIN list.

But the others are correct, the several people on this forum who have had howling diffs had them replaced under warranty no VIN list or RRT needed.

Exactly. The howling on the ones in the RRT are much worse sounding than a diff slowly and progressively getting louder over many miles.

[ViperJon]

My car was built within the suspect timeframe but haven't heard anything yet, from FCA or the car.

[Policy Limits]

These bad boys are hit or miss. Take yer vitamins & say your prayers. Haha.

[Rapidrezults]

My car was built within the suspect timeframe but haven't heard anything yet, from FCA or the car.

If I read the post right, it says "axles" built on or after/before those dates. There's a chance that some cars built in December for instance could've had an axle that was built in November and not included. Who knows exactly what it all means...I'm sure the phones will be ringing to those with specific VINs soon enough.

[7TH_SIGN]

Damn thats loud. Sounds like cut gears lol

[Pappy]

Here's something kind of interesting. My car was built in "the window" - January, and was originally scheduled for shipping in late Feb, but that date slipped a couple of times to mid-March. Then, on 14 March it was "re-bayed" and finally shipped on April 8th. At 500 miles the rear end is very quiet. Maybe I got "the fix"????

Pappy

[Darius]

My Viper hasn't whined a bit, it's too scared of the beating I would give it!

[Admir]

Dodge told me that gear vine makes you loose 5 sec per lap at least!
My Viper hasn't whined a bit, it's too scared of the beating I would give it!

[One Viper Bite]

I just finished dealing with a blown diff in my 2013 GTS.

I bought it used with about 10,000 miles on it. When I first picked it up, the rear diffe wined like yours at cruising RPM. I thought it was normal and expected from a 640 HP American supercar.

However, over the course of the next 2,000 miles, the wine got louder and worse until it was constant. I in any gear, any RPM and on decel it sounded like it was eating itself alive. Then it started clunking like crazy. Finally, it started leaking and seizing up and I stopped driving it and got it to the dealer with my friend who is a Master Viper Tech. Here is a video of the massive play there was on it. The rack and pinion gears were eating each other alive by the end. Tons of metal shavings in the diff.

Got a brand new diff installed under warranty and now it's completely silent. I couldn't believe how quiet the new diff was, especially since I bought the car with the already present wine. I took my time on this diff and did several heat cycles for 500 miles before I really gave it the beans. Going to replace the fluid soon as well, just to be safe.

I would get it checked out by a Viper Tech that you can trust. I've heard of other dealerships dismissing the wine on our rear ends. My friend who is a Viper Tech says that is not normal and is a result of improper assembly from the factor or someone not adjusting the gears properly when it is serviced.
http://i580.photobucket.com/albums/ss249/brianjames624/th_video-1461695553.mp4 (http://i580.photobucket.com/albums/ss249/brianjames624/video-1461695553.mp4)

[swexlin]

Chris, do you have an update for us? Were you able to get it in for a tech to hear?

[Rapidrezults]

Chris, do you have an update for us? Were you able to get it in for a tech to hear?

Had my car in yesterday for the 18 speaker stereo install and ran it by the tech. Service advisor called me and read me the RRT, which is exactly as noted earlier in this thread. He also went on to mention that for any 16's that have any diff noise they are instructed to order a new diff....so my new diff is on it's way. :)

Ironically there was another beautiful purple ACR-E there with only 250 miles and a new diff on order.

[swexlin]

Good to hear, thanks for the update.

[ViperJon]

Just got the call from Dodge, my ACR is one of the differential affected. Making arrangements with a dealer in upstate NY that Chuck Tator recommends for warranty work. I also have a passenger airbag issue to be dealt with. Not convenient but have no choice. About 90 miles away.

[lochnessmonster]

Strange coincidence that I would come across this thread today. I was coming back from the airport this last weekend with my wife, and I decided to turn the music off while we talked (usually I just turn it up ;) ). When I drive the car alone, I tend to have the tunes on or the window cracked, so there is some cabin noise. As we were driving I noticed this faint whining noise, which is the same as has been posted here. It is extremely faint and only occurs at 120 km/hr (75 mph). Anything above or below that speed in 6th gear and it isn't there, and it doesn't occur in any other gears at any speed (I went out and checked). If you didn't know to listen for it, you probably wouldn't even know it was there. I am going to keep my eye on it, and see what happens, but quite honestly, it could have been doing it for months and I wouldn't have known with the tunes playing etc. With the R28 recall we have an extra 2 years on the drivetrain, so I'm good until July 9, 2020. I won't sweat it unless it gets worse. At this point I think the dealership would just look at me like I have lobsters coming out of my ears.

[swexlin]

Strange coincidence that I would come across this thread today. I was coming back from the airport this last weekend with my wife, and I decided to turn the music off while we talked (usually I just turn it up ;) ). When I drive the car alone, I tend to have the tunes on or the window cracked, so there is some cabin noise. As we were driving I noticed this faint whining noise, which is the same as has been posted here. It is extremely faint and only occurs at 120 km/hr (75 mph). Anything above or below that speed in 6th gear and it isn't there, and it doesn't occur in any other gears at any speed (I went out and checked). If you didn't know to listen for it, you probably wouldn't even know it was there. I am going to keep my eye on it, and see what happens, but quite honestly, it could have been doing it for months and I wouldn't have known with the tunes playing etc. With the R28 recall we have an extra 2 years on the drivetrain, so I'm good until July 9, 2020. I won't sweat it unless it gets worse. At this point I think the dealership would just look at me like I have lobsters coming out of my ears.

Same thing for me. Mine is noticeable above 60 in 5th or 6th, but radio must be turned down, and then you can hear it (above all the other cabin noise, LOL). At this point, like you, I'll keep and "ear" on it!

Jon - Have you noticed any noise yet from your diff?

[ViperJon]

Same thing for me. Mine is noticeable above 60 in 5th or 6th, but radio must be turned down, and then you can hear it (above all the other cabin noise, LOL). At this point, like you, I'll keep and "ear" on it!

Jon - Have you noticed any noise yet from your diff?

No I haven't, but I usually have the tunes on as well. I'll be taking it out more this weekend hopefully. Haven't done a lot of highway driving in it in higher gears.
If it is there it's very minor right now but I guess it gets worse.

[swexlin]

So, after some re-thinking of this, and hearing the guys that have had replacements have silence, I thought, what the hell, car is under warranty. So, I made an appointment to drop the car off next Thursday, and leave it for my tech to drive and listen to. We'll see what's what, and at least it's documented.