Page 2 of 2 FirstFirst 12
Results 21 to 30 of 30

Thread: Thumping vibration in front end under acceleration.

  1. #21
    Hybrid booster
    Join Date
    Oct 2009
    Location
    bridgewater
    Posts
    407

    Re: Thumping vibration in front end under acceleration.

    driving with any of the mounts out stresses the axles pretty heavily. when the front mount went on mine, it was maybe two days of poosyfooting it to work before the axle gave on my way home.

  2. #22
    Garrett booster
    Join Date
    Dec 2005
    Location
    zentral Kalivornya
    Posts
    242

    Re: Thumping vibration in front end under acceleration.

    Lots of good input, My personal 'net diag' opine is an mount /axle alignment issue...
    Having said that, ck the 'k' frame to body integrity just for giggles.

  3. #23

    Re: Thumping vibration in front end under acceleration.

    I jacked up each front wheel, one side at a time, trying to keep the suspension at ride height by careful jack placement, and each side seems to have a half inch or more of free play in the axles, so I don't think it's bottoming out.

    Going to have to try changing the left side axle.

    Does the transmission side mount go bad often? It's hard to see in there and see what the rubber looks like.

  4. #24
    Hybrid booster
    Join Date
    Oct 2009
    Location
    bridgewater
    Posts
    407

    Re: Thumping vibration in front end under acceleration.

    I haven't had a trans mount go yet - they are a little more isolated from movement then the passenger mount. if you didn't move the engine when you did the clutch, centering should be close enough (besides which it is doubtful you wouldn't have made that long of a trip before the problem started, if it were placement related). I'd check the hubs next. if it is a high mileage car, or ever sat for a long period of time, and they are original - they could be suspect. I've had bad hubs make the front end shudder so much it felt like it would explode, but not all the time.

  5. #25
    Moderator Turbo Mopar Staff Vigo's Avatar
    Join Date
    Feb 2006
    Location
    San Antonio,TX
    Posts
    10,798

    Re: Thumping vibration in front end under acceleration.

    Ive had bad wheel bearings get scary bad too, but the thing about those is that they always give you other clues.. like nasty noises when you put a load on them.

    Dont push the red button.You hear me?

  6. #26
    Hybrid booster
    Join Date
    Oct 2009
    Location
    bridgewater
    Posts
    407

    Re: Thumping vibration in front end under acceleration.

    worth a check, it is obviously somewhere in the front end. I've had hubs go on two different vehicles, and neither made any noise (beyond the resonance from the shudder). from my experience elsewhere, every bearing failure is different.

  7. #27
    Garrett booster
    Join Date
    Jul 2011
    Location
    Arkansas
    Posts
    108

    Re: Thumping vibration in front end under acceleration.

    Check your strut mounts as well.. I had this on a caravan with a bad upper mount on the driver's side. shaking at greater then 60 mph on a trip from CA to LA.

  8. #28

    Re: Thumping vibration in front end under acceleration.

    I fixed it. Changing the left side axle solved the problem.

    But what went bad? Needle bearings. In the left axle, at the transmission end, where the tripod on the axle is. There are 3 rollers that are what touch the transmission side of the CV joint cup. One of those 3 had lost all its needle bearings, so I had a metal ring with a good 1/8" plus of free play to the center stem of its tripod leg. The other 2 of those roller ring things were in good condition. I saw no needle bearings laying around in the cv joint, so I'm guessing they somehow disintegerated, maybe one at a time, then more, then even more.

    Anyway, it is fixed now and runs great again, and nice and smooth.

    Seeing what the problem was, I'm amazed that IT was enough to shake the front of the car all over the place, and HARD, too.

  9. #29
    Moderator Turbo Mopar Staff Vigo's Avatar
    Join Date
    Feb 2006
    Location
    San Antonio,TX
    Posts
    10,798

    Re: Thumping vibration in front end under acceleration.

    Glad you got it fixed. Inner CV joints can cause some of the worst, scariest vibrations of any part on the car.

    Dont push the red button.You hear me?

  10. #30
    boostaholic
    Join Date
    Dec 2005
    Location
    South Side Indy
    Posts
    1,221

    Re: Thumping vibration in front end under acceleration.

    Glad you got it sorted! I was going to suggest the intermediate axle mount. Sometimes those loosen up and cause the axle to flop around some.

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Vibration on acceleration - ?
    By Dragula in forum "I need help!"
    Replies: 17
    Last Post: 11-10-2010, 01:05 PM
  2. Front end noise
    By dodgeman87 in forum Other vehicles
    Replies: 9
    Last Post: 12-25-2009, 12:28 AM
  3. front end alignment ?????
    By 1bad89 in forum Suspension, Brakes, Wheels, Traction
    Replies: 12
    Last Post: 12-12-2009, 02:21 PM
  4. front end wobble...
    By Bubba in forum Suspension, Brakes, Wheels, Traction
    Replies: 2
    Last Post: 06-09-2007, 01:52 PM
  5. Speed related vibration/noise from front
    By Anonymous_User in forum Suspension, Brakes, Wheels, Traction
    Replies: 3
    Last Post: 09-05-2006, 03:43 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •