Jeep Cherokee TD Auto. Brakes have been spongy for the last few months, if I pump the pedal really hard I can (it seems) bottom it, like metal on metal but it's all fine in normal driving conditions and situations.
Took it to a large franchise tyre/repair garage here (in Spain) but the guy who test drove it said there was nothing amiss.
Today I started the engine, out it into Drive, started forward down the track, braked and realised there was very little braking effect, more a gradual slowing down ! After a while of pumping, starting and braking, all returned to normal and I continued my journey. So what's happening? Hyrdo fluid res is full. Is this a failing servo - i.e a delay in the vacuum reaching required level? Or is this master cylinder rubbers failing? If it is the m/cylinder are replacement parts a DIY matter ? Pointers to a suppkier would be useful anyway. I have newish discs and shoes in the front and new shoes on the back.
I suppose my first course is to try another garage/work shop but would appreciate any input from anyone with experience. Cheers.
Took it to a large franchise tyre/repair garage here (in Spain) but the guy who test drove it said there was nothing amiss.
Today I started the engine, out it into Drive, started forward down the track, braked and realised there was very little braking effect, more a gradual slowing down ! After a while of pumping, starting and braking, all returned to normal and I continued my journey. So what's happening? Hyrdo fluid res is full. Is this a failing servo - i.e a delay in the vacuum reaching required level? Or is this master cylinder rubbers failing? If it is the m/cylinder are replacement parts a DIY matter ? Pointers to a suppkier would be useful anyway. I have newish discs and shoes in the front and new shoes on the back.
I suppose my first course is to try another garage/work shop but would appreciate any input from anyone with experience. Cheers.