Vibration between 50 & 70 mph

Discussion in 'Issues, Repairs, Warranty, TSB, Recalls' started by icarumba, Jan 21, 2015.

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Do you experience vibration and rumbling between 50 and 70 mph?

  1. No

    53.8%
  2. Yes - V8/MT

    20.2%
  3. Yes - V8/AT

    12.5%
  4. Yes - V6/MT

    1.1%
  5. Yes - V6/AT

    3.6%
  6. Yes - EB/MT

    2.4%
  7. Yes - EB/AT

    6.4%
  1. icarumba

    icarumba Well-Known Member

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    I have been experiencing rumbling & vibration between 50 & 70 mph, which kind of felt like the wheels were out of balance. After rebalancing them twice, the dealer even tried a different set of wheels & tires - no luck.

    They now believe that the drive shaft needs replacing - at 1100 miles. :frusty:

    Anyone else experiencing this?
     
  2. Guio

    Guio Well-Known Member

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    I've been experiencing something similar on my Ecoboost between 50ish and 70ish MPH. Mine is very subtle though, but the vibration gets annoying after 30 minutes of driving.
     
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    icarumba

    icarumba Well-Known Member

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    Kinda sucks the joy out of road trips, doesn't it?
     
  4. Guio

    Guio Well-Known Member

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    #4 Guio, Jan 22, 2015
    Last edited: Jan 22, 2015
    Yes it does. I've driven from Charleston SC to Miami FL (9 hour drive) twice now before, and after I had the vibration problem. I've stopped taking long trips on my car due to this problem.

    Long story short: My transmission slipped while trying to enter the highway. RPMs went up to 7Kish, and then "kicked" really hard... I thought my car was done for when that happened.

    I've already been to two dealerships and nothing.
     
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    icarumba

    icarumba Well-Known Member

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    My dealer called in an engineer from Ford who has spent 2 days with it so far. Still no clue what is wrong with it. If they can't fix it, I will be asking for a replacement vehicle.
     
  6. JimmyTwoTimes

    JimmyTwoTimes Well-Known Member

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    Something to keep in mind: Driveshafts on the 3.7 litre engine have been a HUGE problem ever since the engine was introduced in 2011. The speed limiter is set so low on that car because, above about 120 mph, the harmonic vibrations in the driveshaft get so bad that the driveshaft literally rips itself apart (I didn't believe it until I saw photos and videos of people exploding their drive shafts after they removed the governor). This is a common and known issue with that drivetrain.
     
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    icarumba

    icarumba Well-Known Member

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    Oh great. I was not aware.
     
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    icarumba

    icarumba Well-Known Member

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    Do aftermarket drive shafts cure this issue?
     
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    icarumba

    icarumba Well-Known Member

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    Good news - problem solved! It was the drive shaft after all. Drives really nice now...I hope it lasts! :clap2:

    There bad spelers, butt thay ficks carz gud!

    [​IMG]
     
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  10. JimmyTwoTimes

    JimmyTwoTimes Well-Known Member

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    I know at least one company stopped making aftermarket drive shafts fir the 3.7 because of this -- it was a big deal when I bought my 2011 V6.

    I'm glad you were able to get it fixed.
     
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  11. Todd15Fastback

    Todd15Fastback Well-Known Member

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    Congrats:cheers:
     
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  12. Blueovalnut

    Blueovalnut Member

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    I've been having the exact same problem with my 5.0 automatic since day one...500 miles now. Thanks for posting! I have an appointment tomorrow at my dealership and will show them this thread!
     
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    icarumba

    icarumba Well-Known Member

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    Good luck! Hope they can get you fixed up!
     
  14. Tamadrummer88

    Tamadrummer88 Finicky

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    I read somewhere its due to the two piece design of the driveshafts.
     
  15. Blueovalnut

    Blueovalnut Member

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    Well a Technician and myself went for a ride and he definitely felt the vibration. First thing he thought was that a tire/tires were out of balance, that's when I showed him this thread. He said that he was not against putting a new driveshaft in the car, but would need for me to bring the car back when I could drop it off. Then he would do some more diagnosis and look if Ford had and TSB's on this issue. I was thinking about replacing the 2 piece driveshaft with a 1 piece aluminum...I'm up for suggestions and opinions! Thanks
     
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