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thumping under moderate braking

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Old Jan 14, 2011 | 03:44 PM
  #31  
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Originally Posted by Boober
i've replaced the uppers... when i did the bearing i could tell the lowers need to be changed but would that cause this problem?
It very well could, and if you're still on the originals it wouldn't be a bad idea to change them out anyways. At this point it seems to me like you will need to follow a sort of process-of-elimination logic to solve this problem.
 
Old Jan 14, 2011 | 04:03 PM
  #32  
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Just to rule out abs, if the abs were coming on all the time would the abs light flash on the dashboard? Is it possible for the abs to engage only on one side?
 

Last edited by Boober; Jan 14, 2011 at 04:11 PM.
Old Jan 14, 2011 | 04:08 PM
  #33  
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There is a fuse for the ABS you could try unplugging, not sure which it is. Though to answer your question - it is unlikely that the ABS would only affect one side and not the other if you are braking on a smooth dry surface going in a straight line, unless there is a bad ABS sensor. Pulling the ABS fuse should help you determine if that's an issue.
 
Old Jan 14, 2011 | 04:12 PM
  #34  
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Originally Posted by MetalMan
There is a fuse for the ABS you could try unplugging, not sure which it is. Though to answer your question - it is unlikely that the ABS would only affect one side and not the other if you are braking on a smooth dry surface going in a straight line, unless there is a bad ABS sensor. Pulling the ABS fuse should help you determine if that's an issue.
gonna pull it right now, but i kinda doubt its the abs acting up

this sucks
 
Old Jan 14, 2011 | 09:52 PM
  #35  
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pulled the fuse and it wouldnt even let me start the car without it. gonna take it to another friends shop tomorrow, but im starting to think its the axle.
 
Old Jan 15, 2011 | 04:34 PM
  #36  
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we put the car on a lift today with me inside, with the car running i took it to about 30 mph and hit the brakes while my friend was under it looking at the wheel. we found that the caliper is loose, the two 7mm hex sliding bolts are tight and secure but the caliper is still very loose. The guess is that either the bolts have worn down (thinned) or the holes in the caliper have worn out (gotten bigger) and the caliper is shaking/rocking when the brakes are applied. since the bolts are 4 bucks im starting there, if that isnt it ill replace the caliper.
 
Old Jan 17, 2011 | 12:01 PM
  #37  
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Wow, im in the same boat. My car does it after i do a pull in 2-3d gear. Definitely going to keep my eye on this thread
 
Old Jan 17, 2011 | 01:09 PM
  #38  
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Ha! I was just gonna tell you to check if you're calipers were loose.
 
Old Jan 17, 2011 | 02:03 PM
  #39  
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thanks for the replies guys, im going to pull the caliper out right now and inspect the guide pin bushing and update.
 
Old Jan 17, 2011 | 08:54 PM
  #40  
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pulled it out earlier today and they seem very worn out. i ordered a new set with the caps included but i have to pick them up tomorrow morning, so by the early afternoon ill post the result.
 



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