Help the idle on my type 44 has gotten worse.

[Bernard Littau]

Hi Brian,

Unplug the throttle switch connector on a type 44 and drive the car around
the block.  It will behave exactly like Jason described.

Even Scott's site has the comment:

"Intermittent operation of the idle portion of the throttle switch will
cause some strange high idle conditions and can cause surging during
deceleration. Intermittent operation of the full throttle switch inside this
throttle switch can cause low boost problems as the ECU controlled Waste
Gate Solenoid Operation will not occur. "

Best,

Bernard Littau
Woodinville, WA
'88 5ktq
----- Original Message -----
From: "Brian Devlin" <bdevlin at stanford.edu>
To: <quattro at audifans.com>
Sent: Thursday, January 24, 2002 1:50 PM
Subject: Re: Help the idle on my type 44 has gotten worse.


> IME a failed throttle switch will result in idle below the normal
> range, but I haven't experienced this problem on a type 44. I can't
> think of anything that would raise the idle other than have the
> throttle or ISV stuck open, or a failure in the ISV control circuits.
> My vote: clean the ISV.
> -Brian
>
> >Hi Jason,
> >
> >Sounds like your Idle switch is not signalling idle to the ECU.  The
> >Idle/WOT switch is a common failure.  However, it could also be
> >mis-adjusted.  You should be able to pull the connector and jumper the
> >correct two leads to test if  the idle switch is the problem -- a paper
clip
> >will do as a jumper in this case.
> >
> >Diagnostics and stuff are on Scott Mockery's web site:
> >http://www.sjmautotechnik.com/10vthrot.html
> >
> >All you type 44 owners should, just for fun, disconnect the connector to
the
> >throttle switch and drive around the block.  The rpm behavoir is exactly
> >what Jason describes.
> >
> >Best,
> >
> >Bernard Littau
> >Woodinville, WA
> >'88 5ktq
> >
> >>  It all started when I started driving again after taken a year off.
Bad
> >move
> >>  I now know but I'm not made of money. The car was working great for a
> >little
> >>  while. Then the gremlins moved in. The idle which was working fine,
just
> >up
> >>  and decided to never return to the normal, ~800 RPM. Now when I start
the
> >>  car it idles at 1100, and when I start driving and come to a stop the
idle
> >>  doesn't go under 1800. Today it was fluctuating between 1800 and 2000
when
> >I
> >>  got to work. When I turn off the car, and start it back up I get to go
> >>  through the whole process again.
> >>  I took it to a shop, and they said, they had never seen this problem
> >before
> >>  and would look in to it. After 4 weeks they reset the computer and
> >>  everything was working fine, according to them. Of course once I got
into
> >>  the car nothing had changed.
> >>  If any body has ideas on how to fix this, that will make me one happy
Audi
> >>  driver.
> >>  Thanks in advance,
> >>  Jason
>
>