Well, I got one for this problem.  Worked for a car with a similar injection
system.

 You might enlarge the air inlet into the TB just a little.  Mine, I
enlarged a little half/round air bleed that was there to allow air past the
Throttle body plate.. I used a small jewlers drill and brought my idle up on
a racecar that used to die on me as I entered corners...not good, no
throttle to catch the rear end with ...
  Bosch..90's era Porsche 928 with a BIG displacment.
  Don Hanson

On Sun, Jul 19, 2009 at 8:25 PM, Benny boy <huotb@videotron.ca> wrote:

> (1984 van) Ok, van run super fine but!!!! Here is a funny one... i rebuilt
> an engine and we have a problem Houston, very low idle, around 500-600. No
> way i can raise this one easily with TB. So, let's see some suggestion!
>
> NO, it,s not idle control box, NO it's no timing, NO it's not ign unit...
> No
> it's no ECU, no it's not temp 2 or OS. I think I know the answer but i'm
> waiting.
>
> It's a fun game.
>
> Hint: How can it be TB?????
>
> Ben
>