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My 3 door used to pulse like that sometimes in slow traffic. ABS worked fine though!

 

usually pump fudging up, worth checking relay under dash make sure all is good, and the fuse.

i had similar issue told it was either pump or the valve block, i changed both and all was good

 

When mine did this, it turned out to be a worn wheel bearing. The abs was picking up the movement in the wheel and hub and confusing it with skid.

Check them as part of your research - it was barely noticable the play!

JJ

 

could be wheel bearing grease splatered around the toothed rotor in one of the huds not an expert but learning fast with my saph

 

i had this problem once and it ws down to the air gap between the sensor and the abs ring on one of the front wheels, only ever did at very very low speeds, as for the pedal going hard do check the 3 relays and there fuses behind the glove box, but remove the fuese as one of mine had started to melt around ther terminals and was going high resistance and causing solid pedal.

 

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could be many things. the fault will be easily diagnosed by a garage with the proer equipment, they can plug the machine in, and it'll tell them whats wrong well worth paying for 1hr labour rather than randomly replacing parts

 

Mine does this aswell. Its gone for a new wheel bearing this weekend so i will find out tuesday!
Hope its sorted because its fucking annoying!!!

 

Mine does this as well was told it was a wheel sensor.
But i have changed all of them and still the same
Thing with mine is that the pump kicks in after it does it
I have just learned to live with it for now(I will be keeping an eye on this thread)

 

if it's a wheel sensor the it normally either puts the warning light on or the pedal goes soft if the bearing is shot

i'd put money on the valve block being gummed up and not doing what it needs to do, you can get one from any sierra/granada with abs

 

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nice one
best I have another look at mine then

 

Got my wobble sorted.
The flange that sits in the hub from the wheel side was worn to fuck!
This caused the bad braking and the wobble. Wheel bearing was collapsing because of the flange aswell.