Very Odd Brake Prob, please help!
During the weekend I noticed my brakes were sticking on, not too bad but enough to cause heat build up. Keeping this story short, here are the events.
When I first spotted it and tried to push the car, it was very stiff. With engine off I pumped the brakes pedal and it came free! I aimed to get home but no joy, they were too tight and hot so called the RAC. They jacked the front and tested the offside front, all ok. Near side front was sticking so they greased and hit the caliper a bit (great fix). It seemed easier and I got it home. All four disks were hot as I think ESP was trying to balance the car.
I pulled the front brake apart to find the piston rather stiff. I removed and checked it put it back, problem still there but only when I pressed the pedal with engine running!!! The disk can't be turned by hand without the wheel. I also checked the other wheels and found the offside rear was stiff!!!
I've come to the conclusion that master cylinder is not releasing pressure on that system. Left front and right rear. Am I right in thinking there are two lines bother activating front and rear diagonally??? I'm at the point of getting it to Audi. Just thought I'd post in case there was anyone who has experienced this or knows the probably cause.
Any thoughts much appreciated as this may cost me dear!!! We've just spent £900 on my girlfriends Polo who's gearbox packed in, oh and clutch, water pump bla bla