Help identify a switch/regulator

[Huw Powell]

The '84 was a bastard year, lots of changes which fully coalesced into 
sanity in '85.

I got my CIS-E "upgrade" from a 1984 car.  But the vacuum switch in 
question is a CIS part.  I might have one kicking around if you need it.

- Huw

On 5/2/2014 8:06 PM, Marco Weibel wrote:
> Huw, thank you for the diagram link.
> I think i came across your pages before. Nice work.
> The thermo switch in my setup has nothing to do with the control pressure regulator. My CPR has only one hose from the intake manifold. Probably a advancement on CIS from your 82 to my 84.
>
> Do you remember a vacuum operated diaphragm valve in front on the intake manifold on the #1 cylinder tube ?
> Possibly in conjunction with AC ?
>
> I have it, the metal tube that exits the valve towards the ground is cut and/or rotten off.
> I sucked on the supply hose to check for operation. I didn't feel any movement and no change in idle when the engine is running. It's not doing anything, probably so for a decade.
> I guess i can just delete that branch of vacuum... including thermo switch.
>
>
>
>
>
>
> Sent from my iPhone
>
> On 2014-05-02, at 7:17 PM, Huw Powell <audi at humanspeakers.com> wrote:
>
>> There's a schematic of the CIS vacuum system here:
>>
>> http://audi.humanspeakers.com/vacuum-system.htm
>>
>> Huw
>>
>> On 5/2/2014 5:40 PM, Marco Weibel wrote:
>>> John and Tony,
>>>
>>> Thats the part !
>>>
>>> Finally i had some time to trace the lines...
>>>
>>> In my case that thermo-switch gets vacuum from the amplifier and sends it to a vacuum actuator which is bolted to the front of the intake manifold (intake tube for cyl.1) the actuator can open the intake manifold to... hold on ... you've got to be k ... to a broken off 1/2 inch dia metal pipe !
>>> Pointing somewhere towards the airfilter box. I never took any closer attention to that corner of the engine bay. The car runs fine for that matter.
>>>
>>> Am i possibly missing some pollution control items ?
>>> The space between the exhaust manifold and the airfilter box is pretty empty. I know there was the compressor for the AC once.
>>> What else ?
>>>
>>>
>>>
>>>
>>> On 2014-05-02, at 3:01 PM, John Larson <viejoloco at comcast.net> wrote:
>>>
>>>> On 5/2/2014 7:03 AM, Marco Weibel wrote:
>>>>> Yesterday I was replacing a brake line from the master on the 84 CGT. As the fitting was rotten and rounded i used vice-grips with success...
>>>>
>>>> ....................... snip ...............................................
>>>>> This morning I invested an hour on the www to find out what that part is without luck.
>>>>>
>>>>> It is screwed in the block at the hight of cyl #5 and has two vacuum-line spigots protruding in a 'V' shape.
>>>>>
>>>>> What is this part called and what is its function ?
>>>>>
>>>>>
>>>>>
>>>>> Marco Weibel
>>>>>
>>>>>
>>>>> Hi, Marco.  What color is the plastic part?  It's a vacuum temperature switch.  Over the years I've been doing this work, I've had about zero luck fixing them.  I have a few laying around, maybe I can help you.
>>>>
>>>> John
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Sent from my iPhone
>>>>
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