[urq] Brake - hard peddle when panic stopping

[Buchholz, Steven]

... this is the classic symptom of a failing bomb ... but it could be
the valve body too.  When you shut off the engine how many brake
depressions do you get before the pedal goes hard?  

Steve B
San Jose, CA (USA)
> 
> Trying to find out what I ought to be replacing of repairing.  First
guess
> for me would be the hydraulic accum(bomb).  But before I start just
throwing
> parts at the problem trying to find out if any other likely culprit.
> 
> Basically I have a hard peddle - mosly at lower speed, and most
notable on
> panic stops, which has scared me a few times.  The brake peddle is
hard for
> a split second then I get full on force to the brakes - basically have
gone
> from little or no braking when applying brakes to a lockup after the
delay.
> Moderate or slow application of the peddle seems (nearly) normal.
> 
> Brakes are G60 up front and later UrQ calipers in rear which have
replace
> the original brakes.  Everything was working fine up 'til recently.
System
> was flush bled at the time the brakes swapped out about 8 months ago.
> 
> Power steering seems fine - maybe a tad stiff at lower speed, but hard
to
> tell.