Cuda started making a loud "whining" noise (video)
#985899
05/04/11 01:58 AM
05/04/11 01:58 AM
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Joined: Nov 2004
Posts: 227 Scottsdale, AZ
Cudalord
OP
enthusiast
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OP
enthusiast
Joined: Nov 2004
Posts: 227
Scottsdale, AZ
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Posting this in the hopes that someone may have experienced this and can give me some tips before I crawl under it this weekend.
Specs: 440, 727 with B&M Shift Kit & TCI BreakaWay torque converter, 3:23 8.75 Sure Grip Rear with MP "Green" Wheel Bearings.
It only happens when I decelerate (let off on the gas and let the car coast). When I give it some gas, the noise goes away, when I let off, it immediately comes back. If I'm going up to speed or on the gas, no issues, only happens when I decelerate. It started off a very low pitched whine, now as you can hear, it is pretty loud.
I attached a video with sound, hopefully you can access it. It appears that the noise is coming somewhere from the center/rear of the car, but I can't be certain as it is pretty loud and high pitched.
Any thoughts or suggestions? Thanks!
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Re: Cuda started making a loud "whining" noise (video)
[Re: Cudalord]
#985902
05/04/11 08:53 AM
05/04/11 08:53 AM
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Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Posting this in the hopes that someone may have experienced this and can give me some tips before I crawl under it this weekend.
Specs: 440, 727 with B&M Shift Kit & TCI BreakaWay torque converter, 3:23 8.75 Sure Grip Rear with MP "Green" Wheel Bearings.
It only happens when I decelerate (let off on the gas and let the car coast). When I give it some gas, the noise goes away, when I let off, it immediately comes back. If I'm going up to speed or on the gas, no issues, only happens when I decelerate. It started off a very low pitched whine, now as you can hear, it is pretty loud.
I attached a video with sound, hopefully you can access it. It appears that the noise is coming somewhere from the center/rear of the car, but I can't be certain as it is pretty loud and high pitched.
Any thoughts or suggestions? Thanks!
If it were me, I'd take a look before I went posting on the internet and then ask questions. Do you want us to fix it too?
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Re: Cuda started making a loud "whining" noise (video)
[Re: Cudalord]
#985905
05/04/11 11:08 AM
05/04/11 11:08 AM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
I'm sorry, I thought this was a question and answer board. Thanks to you that actually gave some suggestions.
yeah I didn't get that reply either. As mentioned sounds like your rear is about done. I'd probably pull the chuck and see how it looks. How/when did this start? was it after a weekend of beating or a gradual thing? 3.23's + heavy car + hard launch = stress on ring/pinion
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Re: Cuda started making a loud "whining" noise (video)
[Re: Mr.Yuck]
#985906
05/04/11 11:23 AM
05/04/11 11:23 AM
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Joined: Jan 2003
Posts: 75,125 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,125
A Banana Republic near you.
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Quote:
Quote:
I'm sorry, I thought this was a question and answer board. Thanks to you that actually gave some suggestions.
yeah I didn't get that reply either. As mentioned sounds like your rear is about done. I'd probably pull the chuck and see how it looks. How/when did this start? was it after a weekend of beating or a gradual thing? 3.23's + heavy car + hard launch = stress on ring/pinion
Also check the MP greenies , they aren't as good as the units Dr. Diff sells ... so I read on the internet ... but that definitely sounds like a rear end noise.
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Re: Cuda started making a loud "whining" noise (video)
[Re: Cudalord]
#985907
05/04/11 11:36 AM
05/04/11 11:36 AM
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Joined: Feb 2005
Posts: 28,312 Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
I'm sorry, I thought this was a question and answer board. Thanks to you that actually gave some suggestions.
If it were me I would have slid under the car as soon as I heard it and grabbed/checked my U joints and at the same time checked to see if my pinion nut was loose. Then posted my findings asking for advise.
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Re: Cuda started making a loud "whining" noise (video)
[Re: Challenger 1]
#985908
05/04/11 11:55 AM
05/04/11 11:55 AM
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Joined: Aug 2003
Posts: 4,481 Mesa, AZ
Pat_Whalen
super gas
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super gas
Joined: Aug 2003
Posts: 4,481
Mesa, AZ
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Quote:
Quote:
I'm sorry, I thought this was a question and answer board. Thanks to you that actually gave some suggestions.
If it were me I would have slid under the car as soon as I heard it and grabbed/checked my U joints and at the same time checked to see if my pinion nut was loose. Then posted my findings asking for advise.
You do realize that without knowing to begin looking at the u-joints and/or pinion, he'd have a pretty hard time beginning the diagnosis.
To the O/P, I had a very similar noise at one time. Turned out to be my pinion nut losing up on me as other previous posters have mentioned. And don't worry about Challenger. You did a way better job initiating a Q&A topic than most people who would have just said, "Have this annoying noise occurring. What is it?"
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Re: Cuda started making a loud "whining" noise (video)
[Re: Pat_Whalen]
#985909
05/04/11 12:09 PM
05/04/11 12:09 PM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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FWIW the video is nice but you get no sense of direction/location of where the noise is coming from.. I agree it is probably a loose pinion nut but many years ago I heard a failed convertor make a similar sound & knowing the location would help in diagnosis...
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
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Re: Cuda started making a loud "whining" noise (video)
[Re: RapidRobert]
#985911
05/04/11 09:20 PM
05/04/11 09:20 PM
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Joined: Apr 2010
Posts: 10,570 Sunny South Florida
Golden-Arm
I Live Here
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I Live Here
Joined: Apr 2010
Posts: 10,570
Sunny South Florida
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sounds more like excessive play in the gears, than it does a bad bearing. check the fluid level yet? if/when you pull it apart, be sure to check the oil, maybe drag a magnet through it, see if you lost any metal, and if so, how much. fwiw, that vid was a good idea, made it easier to hear the whine, instead of just hearing a description.
"When Tyranny Becomes Law, Rebellion Becomes Duty"
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Re: Cuda started making a loud "whining" noise (video)
[Re: Cudalord]
#985913
05/05/11 09:59 AM
05/05/11 09:59 AM
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Joined: Jan 2003
Posts: 75,125 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,125
A Banana Republic near you.
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Quote:
Thanks guys for the tips, it really give me some direction. To answer a few questions:
1. The Video was strictly to give you an idea of the noise pattern, the coming and going of the noise is me decelerating/accelerating, I had no intention of you being able to figure out where it was coming from.
2. The pig was used when I got it, mileage unknown. The first thing I did was check the fluid level and that was last weekend, it was right where it should be and the fluid was clear.
3. This occurred over a period of about 2 weeks, of daily driving, it started out as a very low pitched/intermittent noise.
What case number is it ?
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Re: Cuda started making a loud "whining" noise (video)
[Re: Cudalord]
#985916
05/07/11 09:16 AM
05/07/11 09:16 AM
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Joined: Jan 2003
Posts: 10,777 North Dakota
6PakBee
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,777
North Dakota
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It would be interesting to know just what failed in the rear end. I have never heard a differential sound like that. Wow.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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