When I hit a bump and apply my breaks at the.

CHRISWORKMAN

MEMBER
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

7 Replies

ASEMASTER6371

MECHANIC
52,797 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

CHRISWORKMAN

MEMBER
5 POSTS

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

ASEMASTER6371

MECHANIC
52,797 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

CHRISWORKMAN