1999 Dodge Dakota whine above 20MPH

Tiny
PATCHES96
  • MEMBER
  • 1999 DODGE DAKOTA
  • V8
  • 4WD
  • AUTOMATIC
  • 84,000 MILES
My truck has a whine that starts above 20PMH. It is not the brakes. Not a belt. It is somewhat better if in 4 wheel drive but not much. What does seems to stop it for a very short time is if I drive through a water puddle!. I suspect it it is coming from the front driveline some where but I can not pin point it. Any thoughts?
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Saturday, February 13th, 2010 AT 10:29 AM

5 Replies

Tiny
MERLIN2021
  • EXPERT
Sounds like a bad hub bearing, try this test, get up to the speed the noise starts, then quickly turn left, then straight, then right, do this on a straight section of road, if the noise goes away during one of the turns, the opposite bearing is bad.
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Saturday, February 13th, 2010 AT 10:43 AM
Tiny
PATCHES96
  • MEMBER
I tried your suggestion. It really didn;t make any difference. What I can tell you now is that after about 6 miles of running it stops (or at least I can not hear it any more) it also seeems that engaging 4 wheel drive helps too as does hard acceleration.
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Saturday, March 6th, 2010 AT 5:38 AM
Tiny
MERLIN2021
  • EXPERT
Have you changed the gear oil in the differentials yet? Drain oil and inspect for metal flakes and particles. Could be a bad carrier or pinion bearing inside the diff.
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Saturday, March 6th, 2010 AT 9:01 AM
Tiny
PATCHES96
  • MEMBER
Here is an other post that I found. Not sure what what he is talking about. Do you? And could this be my issue? BTW today I did chnage the left side hub bearing. Found a bad upper ball joint too. But the noise is still there and driving me crazy.

Message:
First. In order to determine if its an engine noise or drivetrain noise turn the truck off with it in nuetral while you are going about 20: but remember no more power steering so be careful where you do it.

Mine was the drive train and I always heard it on its been a problem since I got it: Dealer fixed it about once a year but after the warrenty expired I found my own my solution!

Steambucket. Your symptoms are exactly what mine were so I'm hoping this will help.

After replacing all my U-joints with after market greasable ones I realized that I just spent money on something I didn't need to but good long term insurance. The actual source of the noise isn't the U-joints though. On the front drive shaft coming out of the transfer case there is a what Dodge calls a double cross joint (two u-joints in a row). In between these U-Joints is weird ball and socket with a pin that goes into the ball. Almost like your hipbone and socket. This is what squeaks because its not really protected from the environment the grease dries quickly and gets dirt in it. When you complain at the dealership they squirt some junk in there and its good for a 100 to 1000 miles or so. I took mine apart and cleaned it and greased it real good. No more noise. Mine doesn't have a zerk fitting for greasing this like some so you might just be able to grease it and not take it apart. I have no idea what the function of this ball and socket is but I'm guessing it helps keep the U-joints aligned without vibration or something to that affect. Anyways its a pretty easy fix if you have a little time.

Hope my years of frustration and final satisfaction of solving this problem helps others.

Joel
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Saturday, March 6th, 2010 AT 9:32 PM
Tiny
MERLIN2021
  • EXPERT
Yep sounds like it could be...I will look into it a bit, Mitchell really doesnt have mush on it, but Dealer techs would know! It's called the Double Cardan Costant Velocity(CV) U Joint, and by the description in the post you found, the grease would go in the area of #2...I think original joint has a protector(rubber) on the part, but it may only last a few years, then the weather gets working on it...


http://www.2carpros.com/forum/automotive_pictures/62217_Double_Cardan_CV_Ujoint_1.jpg


#10 would be the noisy piece...
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Sunday, March 7th, 2010 AT 8:12 AM

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