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Re: Brake Problem
A bad master cylinder can cause a loss of breakes like this. It happened a couple of times in my '88 Bonneville about 10 years ago,
With absolutely no warning at all the brake pedal sunk right to the floor, with no braking effect at all. A couple of quick pumps and it would be good.... for about a year, then it happened again.
Imo your mothers car needs a new master cylinder. And you must have your mother practise emergency stops using the parking brake alone.
The parking brake works independently from the normal brakes. It is intended not only for parking but also for emergency braking if the regular brakes are lost.
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