Brake system warning light - hyd pump or bomb?

[Kneale Brownson]

Sounds like the bomb to me.  The three pumps is the giveaway.  Note that a
bomb you bought in 1999 could have been on a shelf for some time prior to
the purchase and could have lost some of its life already.

At 01:57 PM 10/25/2005 -0400, SJ wrote:
>88 5kq
>
>Problem: Classic warning light when using brakes several times in a row.
>Light goes away after few seconds when pump recharges the brake
>accumulator(bomb).
>
>Troubleshooting info:
>Hydraulic pump and bomb were replaced in 1999. Pump was a rebuilt, bomb was
>new. That was about 30k miles ago.
>After shutting off the engine, 3 presses on the brake pedal will deplete the
>bomb pressure - pedal gets hard.
>
>Whats the probability that either pump or bomb is bad? I suspect 95% bomb
>and 5% pump. What are your opinions?
>I thought the bomb should last longer than this - - at least 10 years.
>
>SJ
>85 Dodge PU, D-250, 318, auto
>85 Audi 4k - - sold but still on the road
>88 Audi 5kq
>90 Audi 100q
>
>
>
>
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