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car shakes at above 45mph

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Old Jan 14, 2009 | 05:56 AM
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From: BackYard Mechanic, usa
Default car shakes at above 45mph

after a run at the tracks this summer it started doing this...haven't drove it since.

actually at staging i did a burn out (maybe i damaged something there) and when i got to the finish line (doing 110 mph) the car just got really shaky..

just changed the axles yesterday, it seemed fine, but when i go above 45 it does that.. the steering wheel doesn't shake. the wheels seem to shake, but the tires are fine and the rims aren't bent...

its not the tires, maybe an lsd issue? anyone ever had this issue before?


this is a b18c5 turbo 16lbs boost.. any suggestions would help... too cold to work on the car, and really want help to get the problem situated..

thanks
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Old Jan 14, 2009 | 08:01 AM
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Default Re: car shakes at above 45mph

Get new rotors and you should be good to go!
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Old Jan 14, 2009 | 08:24 AM
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Default Re: car shakes at above 45mph

Take it to a front end alignment shop and get it looked at... better to be safe than sorry.
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Old Jan 14, 2009 | 11:12 AM
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Default Re: car shakes at above 45mph

also try and check your wheel bearing i think it is. when i lowered my accord, my car shook alot at 40+ mph and my wheel bearing was worn out. felt like my wheel was going to fly off
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Old Jan 14, 2009 | 02:03 PM
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Default Re: car shakes at above 45mph

^ i second the wheel bearing thought. Maybe look at your other suspension components... ball joints, etc.
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Old Jan 14, 2009 | 05:10 PM
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Default Re: car shakes at above 45mph

Have you check wheel balance?
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Old Jan 17, 2009 | 02:00 PM
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Default Re: car shakes at above 45mph

my friends civic does the same exact thing and i turned out that the wheel bearing were completely shot to hell.
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Old Jan 17, 2009 | 06:17 PM
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Default Re: car shakes at above 45mph

Probley is your intermediate shaft... I did this to my R and could find out why it was shaking I replaced both axles and come to find out I broke the bearing inside the 3rd axle... aka intermediate axle
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Old Jan 18, 2009 | 07:58 AM
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Default Re: car shakes at above 45mph

It could be just about any of these causes.

The first thing I would do is to swap your wheels and tires to another set known to be good, to see if the problem goes away. If it goes away, it's a problem with the wheels and tires, such as balancing. If it's still there, then you've ruled them out and it's something on the rest of the car.
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Old Jan 19, 2009 | 12:48 PM
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From: BackYard Mechanic, usa
Default Re: car shakes at above 45mph

thanks guys for the responses
i have already swaped tires, to my daily driven ones, i checked the bushings, one is torn, but to have this much shake, i doubt that could be the problem...

ill do the listed above and get back to you guys.. thx
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Old Jan 19, 2009 | 07:59 PM
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Default Re: car shakes at above 45mph

Really do the intermediate shaft.. I was going down the track after a bad wheelhop sessionand it just started shaking "bad".
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Old Jan 19, 2009 | 08:39 PM
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Default Re: car shakes at above 45mph

Normally, there are two types of shaking when the car is moving at a certain speed:
1. Suspension damage shaking.
2. Engine mounts damage shaking.
Normally, if the shaking also causing the steering wheel to vibrate, the problem is locate in the "Suspension damage shaking". If the shaking doesn't effect the steering wheel, it is likely in the "Engine mounts damage shaking".
Narrow down to what engine mount is causing the problem in "Engine mounts damage shaking" is easy as you already guessed. Narrow down to what cause the "Suspension damage shaking" is tough as there are many suspension components involve. As some already stated, wheel bearings and intermiate shaft bearings are your primary suspects.
Good luck.
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Old Jan 19, 2009 | 09:47 PM
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Default Re: car shakes at above 45mph

Well put it this way.... I was at the track I launched.. Wheel hopped terribly. I actually broke my bearing in the intermediate shaft. I bent an axle AND broke my driver side top mount off in the block.. I replaced the axles, nothin still shook, replaced the intermediate shaft tada worked. and this was with a broken mount. after a while I got around to fixing the mount.
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