[urq] Center diff lock

[Keith Lloyd]

Mauritz
I'll go and have a look at mine and report back but I have an idea that ine 
valve is immediately behind the rotary knob on the centre console which is 
why you reall need to do a test before removing all the console to get at 
it.
Will report back in a bit
Cheers

Keith
----- Original Message ----- 
From: "Maurits Jonkergouw" <urquattro at moregraphics.nl>
To: "Audifans" <urq at audifans.com>
Sent: Sunday, May 23, 2010 5:51 PM
Subject: Re: [urq] Center diff lock


> Thanks Robert and Keith,
>
> I would love to check the valve(s) but I can't find it. There are 2 
> identical (to me)
> blue/black valves on the firwall, but ETKA says there should be a 
> different valve for the
> diff lock switch: (046 905 291 A) but in the drawing doesn't show where it 
> is in relation
> to other parts.
>
> At least 1 blue/black valve is correctly located in ETKA (433 862 117), 
> but the other one
> looks exactly the same whle it should be different, if it's the correct 
> location of
> course....
>
> Could you please help me locate the correct valve please?
>
> Thanks again.
>
> Regards,
> Maurits
>
> 1986 quattro GV (rebuilt)
>
> ----- Original Message ----- 
> From: "Keith Lloyd" <spotatashleys at hotmail.com>
> To: "Maurits Jonkergouw" <urquattro at moregraphics.nl>; <urq at audifans.com>
> Sent: Sunday, May 23, 2010 4:35 PM
> Subject: Re: [urq] Center diff lock
>
>
> Mauritz
> I too would look at the one way valves. To test just disconnect and 
> stop-up
> the pipes and re-test.
> HTH
> Regards
> Keith
>
>
> ----- Original Message ----- 
> From: "Robert A Dupree" <robert.a.dupree at jpmchase.com>
> To: <urquattro at moregraphics.nl>; <urq at audifans.com>
> Sent: Sunday, May 23, 2010 2:18 PM
> Subject: Re: [urq] Center diff lock
>
>
> My suspicion is your check valves are failing or failed. Although usually 
> that comes with
> unlocking on boostm
>
>
> ----- Original Message ----- 
> From: "Maurits Jonkergouw" <urquattro at moregraphics.nl>
> To: <urq at audifans.com>
> Sent: Sunday, May 23, 2010 9:58 AM
> Subject: [urq] Center diff lock
>
>
>> Lately my center diff lock is getting engaged on agressive accelerations,
>> mainly above 80 mph. The diff indicator light goes on briefly and you can
>> feel and hear this very loud thumping noise from the back end, very 
>> scary.
>>
>> This happened many times now and I'm afraid I ruined something.
>>
>> It's like there is too much vacuum and this actuates the switch or
>> something.
>>
>> It's the 'later' style diff lock system with one rotary switch and two
>> lights.
>>
>> Any thouhts?
>>
>> Regards,
>> Maurits Jonkergouw
>> (mobile)
>
>
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