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  1. #1
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    Default BAD Thump while driving

    Ok, so I took my car into Firestone (lifetime allignment and the only place that will allign my lowered foci) and they found an obviously bent Left inner tie rod. I'm about to replace it but I'm not to sure if that's the ONLY cause to this issue. I will be replacing that this weekend but I wanted to look for other things as well just to be ABSOLUTLY sure.

    While I'm drving I get a VERY ANNOYING repetative thump from the left tire, kinda as if your in a truck with oversized tires, but on a louder, more noticable scale. I don't recall ever hitting anything outside my accident in January this year. This just came about within the last 2-2 1/2 weeks. Any ideas on what to check for other than that?
    2000 Sony Edition Sedan, 5spd. - Goin' Platinum - SOLD; not forgotten
    1996 VW Golf MKIII, 2.0 ABA, 5spd. - Black - Sold

  2. #2
    Ray
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    Default Re: BAD Thump while driving

    swaybar endlink?
    I used to have a focus like you. Then I took an arrow to the knee.
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  3. #3
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    Default Re: BAD Thump while driving

    swaybar endlink....i recomend the f2 ones...they look pretty tough...im gonna get me some to get rid of the thud i hear myself....
    00 Pitch Black ZX3 : i hate my car...but she love me

  4. #4
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    Default Re: BAD Thump while driving

    This thud is consistent, that is in result of Swaybar endlinks? I had no clue, looks like I gotta get some of them too now! Thanks guys!
    2000 Sony Edition Sedan, 5spd. - Goin' Platinum - SOLD; not forgotten
    1996 VW Golf MKIII, 2.0 ABA, 5spd. - Black - Sold

  5. #5
    Educating Mazda Owners One Thread at a Time Nliiitend1's Avatar
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    Default Re: BAD Thump while driving

    Well, I'd inspect your current ones first before assuming that is the problem, but it definitely could be what's causing the noise.

    Top strut mount bearings can also cause the type of noise you're describing (especially if it happens more while turning) as well, and so could any number of other front suspension bushings.

  6. #6
    Official [FJ] Distinguished Advisor Z63R's Avatar
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    Default Re: BAD Thump while driving

    Also look for a blister on the tire's inside sidewall and/or inside tread shoulder area... might've happened during whatever bent that tie rod.
    .
    "Wine tasting isn't bad, but given the choice, I'd rather drink left-over beer and replace brake pads." - OmniFocus

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  7. #7
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    Default Re: BAD Thump while driving

    I checked the tire and that's fine. I 'm getting new shocks and struts soon, would recommend just buying new strut mounts as preventive maintanence?

    Also, what should I look for when inspecting my current swaybar endlinks?
    2000 Sony Edition Sedan, 5spd. - Goin' Platinum - SOLD; not forgotten
    1996 VW Golf MKIII, 2.0 ABA, 5spd. - Black - Sold

  8. #8
    Educating Mazda Owners One Thread at a Time Nliiitend1's Avatar
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    Default Re: BAD Thump while driving

    I would replace the upper strut bearings/mounts for sure, since they're relatively cheap and a wear item.

    When inspecting the swaybar endlinks, you should be looking at the condition of the balljoints at both ends, particularly paying attention to the ease at which the joints move and the amount of play in the joints. If they seem too loose or if they are binding at all, it's time to replace them.

    If you still have the original ones on the car, I'd just go ahead and replace them since they're so cheap.

  9. #9
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    Default Re: BAD Thump while driving

    Ok, so I installed new KYB AGX shocks and struts and replaced the strut mounts (they weren't bad), they are awesome, but it didn't even help my big thumping problem. I also just replaced my right passenger motor mount. There was a rubber grinding noise when I went over speed bumps and when I first started the car and revved the engine a little, but all that is gone. It was shot to SH*T, the fluid busted out all over the engine bay beneath the reservoir tank and the bottom half of the mount was in separated from the metal mount. I replaced the dogbone mount with a poly mount about a year ago and that one is still good. What else could be the problem?
    2000 Sony Edition Sedan, 5spd. - Goin' Platinum - SOLD; not forgotten
    1996 VW Golf MKIII, 2.0 ABA, 5spd. - Black - Sold

  10. #10
    [FJ] Specialist Johnny_P's Avatar
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    Default Re: BAD Thump while driving

    this really sounds like either bad tires or something....
    does it make the noise faster depending on vehicle speed or engine RPM? or does it not matter what speed anything is spinning at?

    from what you've said it doesn't sound like an endlink problem. IIRC when I had the endlinks fail it would make noise over bumps / turns.

    try just re-tightening the lug nuts, give em all an extra little bit, they should be on there pretty damn tight.... and while you do this, check the tire for cupping... run your hand around hte tread of the tire.. if you feel it go up/down/up/down you have a cupping problem. that would definetely make a noise
    '12 Trek X-caliber // '11 Cervélo R3
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  11. #11
    No Cause For Alarm MichaelXi's Avatar
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    Default Re: BAD Thump while driving

    If it's a Consistent "Thump" constantly, it's the tire.
    If it only does it over transitions, then and only then would I think endlinks.
    Are you SURE that the rim is true on BOTH the INNER AND OUTER lips?
    I'd look at the strut too.
    Endlinks are only "Clunky" in certain situations, Not just when driving down the road at a consistent pace.
    Also, if you replace the endlinks, I'd recommend the Newest model of OEM Replacement parts straight from the Ford Parts Counter.

  12. #12
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    Default Re: BAD Thump while driving

    Sorry it took so long to respond, I don't work weekends and I'm only on when I work.

    I just rotated my tires as you guys recommended and there is no change in the thump. I have replaced the following on my car just recently so this can give you an idea of where the problem probably doesn't lie.

    KYB AGX Shocks and struts; new (1 week ago)
    OEM Moog Strut mounts (old were still good, but replaced anyway); new (1 week ago)
    Rear Motor mount (poly); 1 1/2 years ago
    Passenger motor mount (OEM); New (3 days ago)
    Rotated Tires; Today

    Unrelated repairs, but need to be noted.
    Replaced Heater inlet hose and black tube above radiator (forgot it's name) (done today)
    Upper radiator hose (2 months ago)


    I have not checked or replaced the Driver Motor mount yet, however that is my next purchase this week. I don't know what else to check. Also, the thump does get faster as I increase speed. Do you think this is something related to the tranny or CV shafts?
    2000 Sony Edition Sedan, 5spd. - Goin' Platinum - SOLD; not forgotten
    1996 VW Golf MKIII, 2.0 ABA, 5spd. - Black - Sold

  13. #13
    RECORD PROFITS ZX3autoxtasy's Avatar
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    Default Re: BAD Thump while driving

    Does it change when you accelerate?
    2011 Relfex Silver VW Golf 2.5L 5-Cylinder: I need some fancy Mercedes wheels for this thing...
    2004 Pitch Black 5spd 2.0L(Z) ZX3: Totalled 4/26/2011 :(
    Stuff left to sell off it: FocusSport Cool-Flo intake, H&R Rear Swaybar, Thule OEM Roof Rack w/ Fairing, Camber Bolts, etc.
    2008 Specialized Tarmac. 2010 Giant Anthem X2. Trek 1500. Fuji hipster bike. Boom.

  14. #14
    [FJ] Specialist Johnny_P's Avatar
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    Default Re: BAD Thump while driving

    ok so it gets faster as you increase speed.... just vehicle speed or does it relate to engine rotation speed?
    '12 Trek X-caliber // '11 Cervélo R3
    2010 VW GTI
    2000 Focus SE (sold)

  15. #15
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    Default Re: BAD Thump while driving

    The thump changes as the vehicle speed changes, however when the vehicle is cold and I slow down to 1-2-3 mph I can hear something clunking, like it's going at the speed of the CV shaft. I'm out of gear when I hear this as I'm going to slow to be in gear. The car has about 120K on it, with no major issues thus far. Oil just changed 500 miles ago. Alignment done recently with little change in sound and I also just replaced BOTH inner and out Tie rods/ends. I'm clueless as what could be causing this, I hope it's not the tranny or CV shafts, but I'm leaning towards that. I have been pretty hard on the car, however the previous owner was an older person with a little girl so I know the car had a pretty easy life prior to me.

    Any ideas?
    2000 Sony Edition Sedan, 5spd. - Goin' Platinum - SOLD; not forgotten
    1996 VW Golf MKIII, 2.0 ABA, 5spd. - Black - Sold


 
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