Thread: Bad struts?

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  1. #1 Bad struts? 
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    Recently my car making noise on the high way of shaking sound.
    When on bumps it sounds like boom.
    Anyway it sounds like its coming from the front driver side.

    The problem is that i have rust and really scared to do anything there.
    How can i know for sure what it is?
    Grand Prix gt 1999 v6 3.8L coupe.
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  2. #2 Re: Bad struts? 
    Moderator dsmuts's Avatar
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    Jack the car up and look under there while moving the tire and see if anything is loose.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  3. #3 Re: Bad struts? 
    SE Level Member younger5th's Avatar
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    My car has an issue where when I turn to the right, it vibrates. The faster I'm going the harder the vibration. While searching for a solution I've read some people with your issue and one suggestion was worn engine mounts.
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  4. #4 Re: Bad struts? 
    I live here. DirtDog's Avatar
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    Quote Originally Posted by younger5th View Post
    My car has an issue where when I turn to the right, it vibrates. The faster I'm going the harder the vibration. While searching for a solution I've read some people with your issue and one suggestion was worn engine mounts.
    It sounds like u have a bad CV half shaft. If ur turning right then it would be ur passenger side CV shaft. Also could be a bearing as well
    To check bearings Jack car up and grab the wheel at 12 and 6 o'clock and see if it has any play.

    On the CV shafts check to see if their leaking grease or if the boots are ripped
    http://www.grandprixforums.net/my-06-gp-gxp-72403.html
    OBX headers, TEP tranny cooler, ls1 IM fuel rails and injectors, ls2 TB, ls7 MAF, full custom exhaust, Quad retro headlights, full out front and rear suspension work, tuned by HPT by me 8====>

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  5. #5 Re: Bad struts? 
    SE Level Member younger5th's Avatar
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    I found that same diagnoses a lot of places. Guess that's the most common up there with struts. I know I might have a bearing issue, but I doubt think it's bad enough to cause vibration. I need to repair a couple things before selling the car...this problem being one; should I replace both half shafts or just the drivers side? (apologies for semi-hijacking the thread >_< )
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  6. #6 Re: Bad struts? 
    I live here. DirtDog's Avatar
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    Well I did both of mine. Vest guess would be take wheels off and look the shafts over really well. And buy Napa shafts they tend to be best oe replacements
    http://www.grandprixforums.net/my-06-gp-gxp-72403.html
    OBX headers, TEP tranny cooler, ls1 IM fuel rails and injectors, ls2 TB, ls7 MAF, full custom exhaust, Quad retro headlights, full out front and rear suspension work, tuned by HPT by me 8====>

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