1G idle problem after engine rebuild

[94Talon2]

I just replaced my clutch, and rebuilt my engine.

My car started fine and revved to 2000rpm then about 10sec later it went down to 500rpm and the car was really shaking, then the car died. I turned it on a few times and it did the same thing each time.

What's the problem?

 

[SpeedFreak03]

The reason it goes to 2K RPM is probably because of the FIAV (fast idle air valve), which keeps the throttle plate open a little bit till the car warms up, read about it here: http://www.vallotton.com/fiavblockoff.asp

Now, about the 500RPM idle, it sounds like it just needs to be adjusted back to 750. Do this procedure: http://www.vfaq.com/mods/BISS-1G.html

Good luck!