WHEN I HIT A BUMP AND APPLY MY BREAKS AT THE ...

  • Tiny
  • chrisworkman
  • 1994 Chevrolet S-10
  • 80,000 miles

When I hit a bump and apply my breaks at the same time or just keep my foot on the petal slowing down
and hit a bump it makes a grinding kinda noise then I lose break pressure almost to the point of no breaks, I replaced the power booster thinking it was that but I was wrong do you guys have any idea what this matter could b

Wednesday, January 2nd, 2013 AT 3:40 AM

7 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,555 posts

Do you have abs? It would give the impression of a vibration that could be mistaken as a grinding. The low pedal concerns me. Is the fluid level staying up ok?

Have you had the linings and pads checked lately?

Roy

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Wednesday, January 2nd, 2013 AT 11:43 AM
  • Tiny
  • chrisworkman
  • Member

Yes I have abs and the break fluid still in the same spot and the break pads where replaced about 6 months ago and thats sounds about right the grinding noise sounds like a loud vibrateing but it only happens when I hit a bump and the break pedal at the same time or if im slowing down and hit a bump. I can drive down the highway all day long and be fine as long as I don't hit any steep bumps or another street

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Wednesday, January 2nd, 2013 AT 5:48 PM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,555 posts

Ok, I bet there is a sensor issue when you go over a bump, the gap changes and triggers the abs.

You may have to have someone look at the system and check for codes.

Roy

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Wednesday, January 2nd, 2013 AT 6:28 PM
  • Tiny
  • chrisworkman
  • Member

Okay thank you. Just wondering Wouldn't the check engine light come on for any sensor

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Wednesday, January 2nd, 2013 AT 6:45 PM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,555 posts

No, abs light

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Wednesday, January 2nd, 2013 AT 6:52 PM
  • Tiny
  • chrisworkman
  • Member

I see thank you

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Wednesday, January 2nd, 2013 AT 6:54 PM
  • Tiny
  • chrisworkman
  • Member

An abs scan tool it that the scan tool that you use inside the truck to check codes and can it be used to bleed the abs as well

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Thursday, January 3rd, 2013 AT 11:01 PM

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