Help the idle on my type 44 has gotten worse.

[Brian Devlin]

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