Welcome To V6Mustang.com!

We are the oldest and largest V6 Mustang forum on the internet. If you have any questions about your V6 Mustang or just want to connect with other V6 Mustang owners around the world, you have found the best place on the internet to do that.

Registering is free and easy! Hope to see you on the forums soon!

2000 V6 Mustang vibration problems

Discussion in '1994-2004 V6 Mustang Tech' started by D. Dueno, May 8, 2019.

  1. D. Dueno

    D. Dueno New Member

    Joined:
    May 8, 2019
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    I just got a used 2000 Mustang, on the test drive it was just fine. But when I was driving it around it was shaking. It is automatic. I did get new rims and tires witch was balanced, it doesn't feel like it needs an alimight, it does pull when braking. The engine mounts seem fine, the engine dose move a little when reved. This starts around 25 MPH but it not that nitsuble. when I get up to 35 then you can notious it. at 45-60 it feels like it's going to fall apart. But this only happens when im on the gas, if im just costing it feels like a normal car. The front suspension needs some work, when i put white on it is like a trampoline, the back is fine. I put it up on jacks and there was some water in the exhaust, I dont know if that helps at all. Anything will help. Thanks
     
    Last edited: May 8, 2019
  2. fasterthanyou

    fasterthanyou Active Member

    Joined:
    Feb 9, 2013
    Messages:
    611
    Likes Received:
    74
    Trophy Points:
    38
    Location:
    South Florida
    Sounds exactly like a tire that is out of balance. Or maybe a tire that has tread seperation (coming apart).

    If its not the tires then its the driveshaft u-joints.

    But yeah, my money is on tire imbalance.
     
    Poncho Villa likes this.
  3. D. Dueno

    D. Dueno New Member

    Joined:
    May 8, 2019
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    I had all the tires balanced. Is there any way to check if it is the driveshaft u-joints?
     
  4. HumanSVD

    HumanSVD Member

    Joined:
    Nov 18, 2018
    Messages:
    46
    Likes Received:
    5
    Trophy Points:
    8
    Take it to another tire shop and have them check. If it checks, go get a pro to check drive shaft U joints.
     
    Poncho Villa likes this.
  5. fasterthanyou

    fasterthanyou Active Member

    Joined:
    Feb 9, 2013
    Messages:
    611
    Likes Received:
    74
    Trophy Points:
    38
    Location:
    South Florida
    Grab the driveshaft near the joints and give it a firm twist/wiggle. See if there is any movement. There should be no movement. Although that doesn't mean they are fine.
    They could be binding up. Unbolt the driveshaft. Its four 12mm 12 point bolts. Take the driveshaft off and see if the joints pivot/swivel freely. If they don't you need new joints. If they move freely then your vibration is caused by something else.
     
  6. D. Dueno

    D. Dueno New Member

    Joined:
    May 8, 2019
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    Thanks for that. But it was fine. The breaks do pull to the right when I break so i'm going to bleed them. I did knowtes the antifreeze needed change so i'm going to do that and take a look at the spark plugs. Any more sugenous will help a lot. Thanks
     
  7. fasterthanyou

    fasterthanyou Active Member

    Joined:
    Feb 9, 2013
    Messages:
    611
    Likes Received:
    74
    Trophy Points:
    38
    Location:
    South Florida
    Not sure what else to tell you dude. A vibration that gets worse as vehicle speed increases is either tires or u-joints.

    If it was suspension related you would have more problems than just vibration. You would have erratic steering and loud clunks every time you hit a bump or turned the steering wheel.
     
  8. D. Dueno

    D. Dueno New Member

    Joined:
    May 8, 2019
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    Yeah I think it is the suspension. Thanks for the help
     
  9. John D. Carter

    John D. Carter Member

    Joined:
    Jul 24, 2015
    Messages:
    18
    Likes Received:
    2
    Trophy Points:
    13
    If the car's original engine mounts or transmission mounts were replaced by cheap Chinese made aftermarket mounts, this could be the source of your problems.
     
  10. fasterthanyou

    fasterthanyou Active Member

    Joined:
    Feb 9, 2013
    Messages:
    611
    Likes Received:
    74
    Trophy Points:
    38
    Location:
    South Florida
    Lol okay then why post for help on a forum?
     
    HumanSVD likes this.
  11. D. Dueno

    D. Dueno New Member

    Joined:
    May 8, 2019
    Messages:
    5
    Likes Received:
    0
    Trophy Points:
    1
    Becuse im new to having mussicle cars and I cound not find how to do some things
     
  12. fasterthanyou

    fasterthanyou Active Member

    Joined:
    Feb 9, 2013
    Messages:
    611
    Likes Received:
    74
    Trophy Points:
    38
    Location:
    South Florida
    That's why I posted my responses, to try and help guide you in the right direction to accurately diagnose what is causing your vibration.
    I'm a mechanic by trade and work on cars as a hobby. I'm not perfect but I know what I'm talking about (for the most part). I told you reasons why it isn't your suspension, and you followed it up with "i think its the suspension." I literally chuckled and said whatever man.

    Im interested in what the result ends up being tho. Take it easy dude.
     
  13. HumanSVD

    HumanSVD Member

    Joined:
    Nov 18, 2018
    Messages:
    46
    Likes Received:
    5
    Trophy Points:
    8
    Did you figure out what was the issue?
     
  14. Pete fender

    Pete fender Pete Fender

    Joined:
    Jun 4, 2019
    Messages:
    46
    Likes Received:
    4
    Trophy Points:
    8
    Location:
    Oldsmar, Florida
    The transmission mount is famous for causing vibrations.
    Get the rubber one, if yours is broken, the urethane ones vibrate on the street.
    Shuddering torque converter is easily fixed with an anti-shuddering vale from Sunnex.
     
  15. Pete fender

    Pete fender Pete Fender

    Joined:
    Jun 4, 2019
    Messages:
    46
    Likes Received:
    4
    Trophy Points:
    8
    Location:
    Oldsmar, Florida
    Then, there is a possibility that the balance ring on the harmonic balancer has slipped.
    Early 2000 Mustangs and before, are balanced externally, and the ring has a counterweight cast in.
    I tried to find the hub-ring assembly, which is pressed together with an elastomer buffer, but can only find the complete assembly for $200-$400.
    Pictured below is the 99-2000 mustang v6 balancer, the elastomer adhesive ring is the thin dark line separating the ring from the center of the hub.
    Also note the balancing weight cast onto the ring. (There is a step near the bottom in the picture.)
    Over time, the elastomer ring gets degraded, and shifting into the gears makes the weighted ring slip a bit.
    Some get so bad, they come off and cause damage.
    s-l500.jpg