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  #1  
Old 12-21-2012, 12:36 PM
Mr. Mopar Mr. Mopar is offline
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Thumbs up Whining noise at 1000 to 1300 rpm

I know a lot of you as well as myself have this whining noise in your new 2012 Ram 1500 when cruising at 1000 to 1300 rpm. The fix is simple but it took a good tech to find it. The noise is associated with the transmission cooler lines. The velocity of the fluid running through the lines at this rpm causes a noise which can be eliminated but removing the cooler line mounting bracket by the rad. Chrysler knows about this noise and had sent a few foam pieces to use to insulate the lines but this only slightly quietened the noise but moved it over a broader range. Chrysler is working on a permanent fix, keep asking your dealer to fix it and maybe they will listen. The foam thing did not work to the dealership techs satisfaction and that is when he removed the bracket and gave the lines movement so the noise would not transfer through the body. Sounds ridiculous but it worked! Give it a try or send the truck to the dealer and see if they can do it, you will be amazed!
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Old 12-21-2012, 12:59 PM
WIexpress WIexpress is offline
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Mr. Mopar,

Great news as this whining is really starting to drive me nuts. Did the tech say if there is any risk with having the cooling lines not bracketed?
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Old 12-21-2012, 01:01 PM
Mr. Mopar Mr. Mopar is offline
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He did not seem to be concerned about that. All I really cared about was that the noise was gone!! He did it! If you look at the lines from the front, left hand side, there is a bracket that holds them to the rad support. Remove this and add 6 inches of pipe insulating foam just behind the crimped pipe fittings and secure with tie wraps but leave the lines loose. They move around a bit but not enough to worry about, I would say.

Last edited by Mr. Mopar; 12-21-2012 at 01:11 PM.
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Old 12-21-2012, 03:11 PM
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cool, thanks for the heads up, but tell you , since I put on my magnaflow exhaust, i rarely hear it
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Old 12-21-2012, 03:30 PM
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This is very similar to a power steering issue the RS minivans had some years ago. The eventual solution to that was to add 3 feet of rubber line to the cooler lines to dampen the noise.
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Old 12-21-2012, 03:34 PM
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Are you talking about the two lines mounted to the side of the radiator with a plastic bracket?

Thanks
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Old 12-21-2012, 06:25 PM
Mr. Mopar Mr. Mopar is offline
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Yes, those 2 lines. I believe this has a lot to do with the line size, or diameter or length that sets up a harmonic at this rpm. Maybe the fix will be to cut the line and add a loop of flexible hose or something, anyways, I am glad it has been addressed.
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Old 12-21-2012, 08:42 PM
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This is a great easy fix for this annoying noise. Thanks for your input!
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Old 12-22-2012, 11:46 AM
Mr. Mopar Mr. Mopar is offline
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I always refer to this forum for ideas and help and if I can help, I sure will. Thanks to all of you out there willing to share your problems and solutions, this forum is fantastic!
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Old 12-22-2012, 01:23 PM
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Quote:
Originally Posted by Mr. Mopar View Post
I always refer to this forum for ideas and help and if I can help, I sure will. Thanks to all of you out there willing to share your problems and solutions, this forum is fantastic!

Reps to you for your help in finding more info and a possible solution, tks
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