Right so,
My brake discs and pads all round were looking abit tired and worn out so I decided to get drilled and grooved all round with new pads, not to much of a job changing them and had a right good tidy and paint up , they look brilliant now but when I'm braking under 20 mph there's a abs crunching sound and feeling, after about 15 mins of driving my abs light **** on and the crunching goes away ? I'm going to try my hardest to get the sensors out and give them a good clean, but any advice would be greatly appreciated !

 

Damaged an abs ring on install?

 

I can't look right now but it is a possibility, do u think some dirt could have got on the sensor when I was banging around cleaning rust off,

 

Sounds exactly how my grooved discs were after installation. It turned out to be a bent ring, no sound when braking once fixed.

 

It's definately on the front aswell because I can hear it

 

Anybody else please ?

 

Bump

 

Had dirt on a sensor, cause abs light to come on but no crunching.

But did make the brakes seem very poor and I could lock them up.

A quick clean in place sorted it for me.

 

Thanks alot Athame1 , ive spoke to a few people and they say it could be dirty abs sensors from all the banging and spraying i did underneath, also do you reckon i could have mooved one of the speed sensor thingys in the rear hubs abit ? Sorry about the terminoolgy :/

 

Depending on year and model codes can be read, which would point out exactly where the problem is.

but as said above don't rule out a damaged abs ring yet

 

Success !!! Had a good look at the rear rings (no pun intended) and there was a small afro of magnetic metal shavings stuck to the rear pasanger side ABS sensor , so im guessing the crunching was the other 3 sensors detecting there was an issue with number 4, Gave it a right good clean and now thank god it works better than ever,, Good little learning curve
Now to learn how to spell !

 

Where are the abs sensors on the rear of a 2005 blob STI? I have a similar problem but it only happened when I changed the rear disks and pads but I can't see a sensor?

 

It's poking through the back of the hub pointing on to the abs ring, about 2 inch long and as thin as a pencil, the abs ring is the bit that hall grooves in it also known as halls, looks like a cog,, hope this helps