Brake Pedal Stiff When Weather is > 90 degrees

[Paul Caouette]

I recall similar problem many years ago. Solved with a new MC. 

Sent from my iPhone

> On Jun 26, 2016, at 3:21 PM, <jlagnese at massed.net> <jlagnese at massed.net> wrote:
> 
> When that happened to me the pedal became hard and wouldn't go down very far.
> 
> -----Original Message----- From: Kneale Brownson
> Sent: Monday, June 20, 2016 6:34 PM
> To: Tihol Tiholov
> Cc: quattro at audifans.com
> Subject: Re: Brake Pedal Stiff When Weather is > 90 degrees
> 
> 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
>> _______________________________________________
>> quattro mailing list
>> http://www.audifans.com/mailman/listinfo/quattro
>> http://www.audifans.com/kb/List_information
> 
> _______________________________________________
> quattro mailing list
> http://www.audifans.com/mailman/listinfo/quattro
> http://www.audifans.com/kb/List_information 
> _______________________________________________
> quattro mailing list
> http://www.audifans.com/mailman/listinfo/quattro
> http://www.audifans.com/kb/List_information