braking revs..is this normal

[1.6mk4GOLF16v]

Just noticed when i pump the brake pedal the revs go up when at stand still, this normal? or is there something need checking?
 

[AD1.8T]

When its idleing ?

[1.6mk4GOLF16v]

do you mean how far will the revs go if i keep pumping?

[AD1.8T]

Na does it do it when the engines running but your not moving when the cars just ticking over ? Youl notice if you turn the steering wheel lock to lock the revs will dip aswell .... I presume its just were the cars drawing power to something else i would try it with the brakes but my cars kind of in pieces. All the cars ive driven have done the same with the steering though

[1.6mk4GOLF16v]

Na does it do it when the engines running but your not moving when the cars just ticking over ? Youl notice if you turn the steering wheel lock to lock the revs will dip aswell .... I presume its just were the cars drawing power to something else i would try it with the brakes but my cars kind of in pieces. All the cars ive driven have done the same with the steering though

yep dips when i turn the steering wheel full side to side
bounces a bit when idle but nothing major

[1.6mk4GOLF16v]

any ideas?

MAP sensor perhaps?

[mk3.owner]

All my car's have done this.. I didnt see it as a problem as it's Power Steering and ABS. They need power from somewhere.