Thread: Car is vibrating

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  1. #1 Car is vibrating 
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    I need help bad. I replaced on the drivers side the wheel bearing and tie rod all motor mounts were changed to poly in the last month. The car still vibrates under acceleration only at 50+ mph. When not under throttle it is completely smooth. Under throttle it shakes pretty bad. I think it is a different problem but if I go around a corner and give it a little gas I can hear a loud rattling in the rear of the car. Please help me figure what is causing this. I am sick of replacing parts that don't need to be fixed.
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  2. #2 Re: Car is vibrating 
    Killa Bee Scottydoggs's Avatar
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    blown axle.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: Car is vibrating 
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    for sure? also what would cause almost a hollow knocking in the rear while under acceleration.
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  4. #4 Re: Car is vibrating 
    Killa Bee Scottydoggs's Avatar
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    the exhaust bouncing around maybe?

    if its smooth at speed off the gas, then vibrates when on the gas the side you feel shaking has the bad axle.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: Car is vibrating 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    CV axle.

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  6. #6 Re: Car is vibrating 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    Definitely an axle. Wife had the same issue and a new axle is the fix.
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  7. #7 Re: Car is vibrating 
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    are there some things i should replace while im in there? as i do believe the wheel bearing is just beginning to go out as well.
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  8. #8 Re: Car is vibrating 
    Killa Bee Scottydoggs's Avatar
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    not really, unless you want to lca's and sway bar bushing and end links.

    at least you dont have to take the brakes off this time round lol

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  9. #9 Re: Car is vibrating 
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    hit and a miss guys replaced the passenger wheel bearing and cv axle. It did help a little but still vibrates is it a strut? i honestly have replaced anything i can logically think of that would make the car vibrate like this. it does also vibrate more when i hit a large bump or a low spot in the road.
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  10. #10 Re: Car is vibrating 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    That's weird. Did you torque the wheels to 100 ft lbs? How are the LCAs, inner & outer tie rods? Bent rim? Belt shift in the tire? maybe a wheel weight flew off
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  11. #11 Re: Car is vibrating 
    Turbo is the way to go. BillBoost37's Avatar
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    You could just wait til the vibrator your date dropped in the car runs out of batteries.
    I drink..so consider that when reading my posts.

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  12. #12 Re: Car is vibrating 
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    Quote Originally Posted by BillBoost37 View Post
    You could just wait til the vibrator your date dropped in the car runs out of batteries.
    Funny as fvck. I'm gonna catch **** for this because this response is so late but I've been real busy so sue me.
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  13. #13 Re: Car is vibrating 
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    Quote Originally Posted by highoctaneracing View Post
    That's weird. Did you torque the wheels to 100 ft lbs? How are the LCAs, inner & outer tie rods? Bent rim? Belt shift in the tire? maybe a wheel weight flew off
    what do I check on LCA's, will look at the wheel weight but doubt it and what do I look for on inner and outer tie rods? no way it has a bent rim and it slowly got worse and how do I know if the belt shifted?
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  14. #14 Re: Car is vibrating 
    GrandPrix Junkie HighOctaneRacing's Avatar
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    Look for worn bushings on the LCA and check balljoint. Jack up car safely and grab both inner tie rods and shake side to side to see if there is any play. Same with outer tie rods. Look at the tire to see if it is out of roundness to check for belt shift. easiest way is to dismount tire but you need a tire machine. youtube has videos
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  15. #15 Re: Car is vibrating 
    Moderator Russosaur's Avatar
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    Here are the LCAs on my moms car, I would say these are bad. So I would look for possibly something like this. Mine looked similar before I replaced them. For shifted broken belts, on my car I pulled the wheels off and looked on them for any deformations and rolled them slowly and you could see the tread not flat it was raised up in some spots it also wobbled really bad.




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  16. #16 Re: Car is vibrating 
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    nope they don't look anything close to that. So what would cause this only under acceleration... it makes no sense to me and i will be doing the coil packs, wires, and plugs so hopefully that fixes any other ideas guys and it feels like it mostly comes from the passenger front side. Anyone else got an idea?....
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  17. #17 Re: Car is vibrating 
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    Under acceleration is usually the axles

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  18. #18 Re: Car is vibrating 
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    replaced the passenger side and the left side feels smooth when driving seems like the vibration is coming from the right...
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  19. #19 Re: Car is vibrating 
    Killa Bee Scottydoggs's Avatar
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    when does it vibrate? on or off the gas or both?


    does it get worse when you hit the brakes?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  20. #20 Re: Car is vibrating 
    Killa Bee Scottydoggs's Avatar
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    try rotating that tire yet to the back?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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