3A eng. Control box intake air pre-air filter

[Al Streicher]

Thanks to all who replied.

I took the assembly out and tested it. The flap was pretty much in the
closed to the outside air posistion. I placed the thermostat into hot (180+)
and it only opened to half way. So I looked in the "FA" and noticed that the
"california" assembly had no thermostat or connection to the exhaust
manifold at all. So I guess no one in Calif. drives in cold weather. Yeah
right.

I "dremeled" the thermostat assembly off of the main body, I could have left
it in place with the thermostat assy removed. I covered the exhaust side
with a few layers of aluminum foil held on with  the clamp.

It sure makes a difference when I start the car, no stall or RPM drop off.

Al Streicher
Mililani, HI.
1990 80 non - Q



-----Original Message-----
From: Huw Powell [mailto:audi at humanspeakers.com]
Sent: Thursday, July 13, 2006 9:32 AM
To: Al Streicher
Cc: Quattro
Subject: Re: 3A eng. Control box intake air pre-air filter


> There is a control box attached to the air filter housing. It controls
warm
> air from exhaust manifold and cooler air from front of the car. Since I
live
> in a tropical environment, do I need heated air to start the engine.

Sure, but it doesn't matter as much at 90 F as it does at 0 F.

> Can I
> close the flap to block warm/hot air, without causing a problem. I don't
> think it is working properly anyway because when I look at the flapper, it
> is open to exhaust heated air on a 85F day, shuting off outside air. I
would
> think it should be closed, always.

 From my investigation (or was it reading the Bentley?) that flap begins
to change position around 100 F.

To answer your question, though, with ambient temps always "high" (say,
over 60 F), removing that assembly will be unnoticeable.

In fact, most of the older (80's) cars have it "de facto" removed
because the metal shroud that gathers air from the exhaust manifold
rusted and fell off years ago.

--
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/