[20v] Brake Warning Light

Todd Phenneger tquattroguy at yahoo.com
Mon Oct 27 11:01:59 PDT 2008


Just check all the hoses. 
To me that shounds like your low on Pentosin.  When I'm now my Brake Light comes on with similar symtoms.

Powerwash that area before you start.  Clean everyting up, then after the flush you can easily identify any leaks.

Good Luck.


--- On Sat, 10/25/08, Brian Pleet <bpleet at telusplanet.net> wrote:

> From: Brian Pleet <bpleet at telusplanet.net>
> Subject: [20v] Brake Warning Light
> To: 20v at audifans.com
> Date: Saturday, October 25, 2008, 8:07 PM
> My wife's 90 90q20v is back on the road after a cylinder
> head rebuild 
> and timing belt change.
> 
> One last issue which raises her concern is the brake
> indicator light.
> 
> Symptoms:
> 1) warning indicator stays on for 25-30 sec on starting, 10
> secs if 
> running engine at 2000 RPM
> 2) warning indicator lights momentarily on full L and R
> turn, after 
> pumping the brakes 10-15 times at idle, not at 2000RPM
> 3) whining sound when cold, not related to turning steering
> wheel. 
> Loosening the pump belt helped, but its still noticeable.
> 4) starting engine with foot on brake pedal does not change
> the pedal feel
> 5) when the return line on the hydraulic brake booster is
> removed, 
> more than the OK few drops of fluid run out, but it does
> stop after 5 minutes
> 6) brake pressure accumulator is original (unless the
> dealer replaced 
> it in the first 10 years)
> 7) pumping the brake after turning off the engine does not
> seem to 
> benefit from any boost, just like when the engine is
> started
> 8) hydraulic fluid was Pentosin, but the dealer suggested
> 10 years 
> ago that adding Lucas would stop the whining while turning
> 9) front brake rotors and pads were just replaced and brake
> fluid was flushed
> 10)Hydraulic lines all show some seepage at joints (likely
> just 18 
> years of use) but no obvious leaks and does not require
> reservoir fill-ups
> 
> 
> I've just bought a new(er) accumulator and 2 liters of
> Pentosin for a 
> flush. Before I install, are there other suspect parts
> (pump, 
> booster, etc) that I should replace at the same time?
> 
> 
> 
> Brian
> 90 90Q 20v
> 95.5 S6
> 02 TT Roadster
> 
> 
> 
> 
> ----------
> E-mail:bpleet at telusplanet.net
> Tel:    (403) 286-0069
> 
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