Brake Pedal Stiff When Weather is > 90 degrees

[Kneale Brownson]

Under hood heat buildup caused MC warpage that made brakes remain engaged after the pedal was released, especially in 200q20v models. I don't recall that making the pedal hard. Does the CQ have a "bomb"?  Failing accumulator can cause a stiff brake pedal. 

Tediously fingered on my iPhone


On Jun 20, 2016, at 4:12 PM, Tihol Tiholov <t.tiholov at gmail.com> wrote:

>> 
>> ...
>> 
>> Message: 1
>> Date: Mon, 20 Jun 2016 06:03:43 -0400
>> From: Christopher Gharibo <cgharibo at usa.net>
>> To: quattro at audifans.com, 20v at lists.20v.org
>> Subject: Brake Pedal Stiff When Weather is > 90 degrees
>> Message-ID: <903F25C2-9DB8-4D37-AADC-CDC31A0C7C7E at usa.net>
>> Content-Type: text/plain;       charset=us-ascii
>> 
>> Hello everyone,
>> 
>> My CQ is running great thanks to this list and your help.
>> 
>> The Brake Pedal gets Stiff When Weather is > 90 degrees. Any thoughts?
>> 
>> Thank you.
>> CG
> 
> I recall discussions re: heat from the radiator warming up the brake master
> cylinder. A home-made heat shield, placed in front of the master cyl. might
> solve the issue.
> 
> -- 
> Tihol
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