[urq] Warm-up regulator questions

[Huw Powell]

I don't know how much this will help, sine it's not the turbo setup, but 
here is the CIS vacuum setup for the WUR:

http://www.humanspeakers.com/audi/vacuum-system.htm

Here you can see what might be something you need to use, a one-way 
valve between those two ports.

Does your car use an auxiliary air valve for more air when cold?

Louis-Alain Richard wrote:
> Hi everyone,
> 
>  
> 
> My freshly rebuilt stock WX is experiencing a rough idle during the warm-up
> phase. It starts very easily, hot or cold, but during the first 30 seconds
> when cold I must help it survive with the gas pedal. My understanding is the
> WUR is bad or dirty. I've swapped it for another one I have, same result.
> Both WUR electrical parts are OK, showing continuity when tested. When hot,
> the engine is fine with a nice air-fuel ratio on the rich side. The urQ WUR
> part number is 0 438 140 094 or 035 133 403D.
> 
>  
> 
> Before I open one of them, I have a few preliminary questions :
> 
> 1-       There are two vacuum ports on them, and both ports are connected
> together via tubing and a T-piece and the other part of this T is connected
> to the thermo-vacuum switch. Is this right ?
> 
> 2-       Is the thermo-vacuum switch supposed to be closed or opened when
> cold ?
> 
> 3-       Is there a good way and a wrong way of connecting that switch ? Or
> is it only a valve allowing some vacuum/boost to reach the WUR when cold/hot
> ?
> 
> 4-       Anyone had opened a WUR before for cleaning purposes ?
> 
>  
> 
> A new WUR is a 500$+ affair, so I've looked other solutions if I must
> replace it. Look at these guys, they propose a variable pressure WUR which
> one tunes via a laptop. It looks very interesting, but price for a turbo
> engine WUR is 600$.Ouch! 
> 
> http://unwiredtools.com/
> 
> Look for the UTCIS-PT, that's the one for turbo engines.
> 
>  
> 
> Brady, could this be a nice thing for tuning a CIS lightly modded engine ?
> 
>  
> 
>  
> 
> Oh btw, we have another baby girl in the house, lil' Simone. She's born on
> august 24th, and the baby and the mother are both going very well. When I
> got the other girl in 2005, Estelle, the very knowledgeable Brady Moffatt
> told me there was a car of that name, the Skoda Estelle. In fact, it was the
> UK-only model name for the rear-engined communist-era pre-VW Czech econobox.
> Since they were also sold in Canada during the 80's, albeit under the Skoda
> Rapide moniker, I am seeking one survivor on which I will affix the UK
> badges, hence lil' Estelle will have an eponym car for her prom night in
> 2021. Now, I need your help to find an appropriate ride for Simone : the
> Brady-pedia was clueless about any car of that name, but I am sure you guys
> will find me an obscure version of a forgotten car that I will have to get
> for the other one prom night in 2024.
> 
>  
> 
> Thanks in advance,
> 
>  
> 
> Louis-Alain
> 
> 1983 Quattro
> 
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> 
> 

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/