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vibration after 90mph

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Old Jun 19, 2007 | 08:32 PM
  #1  
got_hp?'s Avatar
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From: sarasota, fl
vibration after 90mph

finally got my car tuned so im actually driving it a bit, but after doing a few pulls i quickly found a bad vibration (shakes the whole car) at about 90-95ish.

its not engine related, just speed.
i doubt its the driveshaft since that was balanced at a driveshaft shop before i put it on.
tire pressures are all ok.

what are my other usual suspects to check?

wheel bearings?

would like to try and narrow it down so i dont have to just throw parts at it until i find the problem.

any ideas are appreciated.
Old Jun 19, 2007 | 09:10 PM
  #2  
8cylinders>4's Avatar
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pinion angle?
Old Jun 19, 2007 | 09:45 PM
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reamo04's Avatar
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loose lugnut? Can you tell where the vibrations coming from?
Old Jun 20, 2007 | 12:25 AM
  #4  
got_hp?'s Avatar
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From: sarasota, fl
Originally Posted by reamo04
loose lugnut? Can you tell where the vibrations coming from?

not really........the whole car shakes, lol

ill check the lugs tomorrow, it has been sitting for a while so its possible.
Old Jun 20, 2007 | 12:49 AM
  #5  
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Make sure the u-joint caps are properly seated, DS makes a hella of a mess if you throw it out of the saddles. Danny Mc
Old Jun 20, 2007 | 06:26 AM
  #6  
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From: long island
After you check everything else, I would say throw in the aluminum 1le driveshaft. I picked one up off of ebay from a junk yard for under $100.
Old Jun 20, 2007 | 06:47 AM
  #7  
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Tire balance? Front end alignment?
Old Jun 20, 2007 | 10:09 PM
  #8  
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I would check pinion angle and the motor mounts.
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