[CNY_Dave]

I think my booster might be weak, just as described. Bought the car with 55K on it, always took a bit more force on the brake pedal than any car I've driven since my old pontiac with 4 non-power drums off a single-action master cylinder.

I know all 4 calipers and all 8 sliders are free, and I have had a mix bag of rotors and pads on it over the past 145,000 miles.

It hasn't gotten worse, except of course when the check-valve freezes, so I've just been living with it.

 

[CNY_Dave]

The *frozen* check valve is fairly well known.

I thought your descriptions had been during periods that were too warm- above freezing.

 

[CNY_Dave]

It's just water freezing in the valve, so 32F is the magic number.

I think the dealer just sells the hose with the valve in it.