Stall After Revving?

The computer is not properly opening the IAC because it is confused from your modifications. You can solve it by simple turning the throttle plate stop screw on the passenger side of the TB one full round. This will manually hold open the throttle plate and prevent the engine from stalling when you quickly let off the gas. Your idle speed will increase but you can dial that back down by using the set screw under the gray plug. I would set the idle around 900.
 
A slight twist on Shaun's idea is to just run the bleed screw out a little. As you do, the idle will start to return to idle slower, which should act as a buffer to keep the revs from dropping so fast.

Either way should work IMHO - we dont know your existing settings or how the car performs otherwise.

Good luck.
 
MysticKeith50 said:
What is usually at fault when your car is idling(hot or cold) and whenever you give it gas to rev, it stalls?

Its cause you put all those























:banana: Hot Rod Parts :banana:

on your car :rlaugh::rlaugh: :rlaugh:

Like said above, your pcm is a bit confused by all that extra airflow.

Play around with what mechanical adjustments you have at your disposal for the best results you can obtain.

If you do a pcm reset after each change, it will help your pcm adjust to your new changes.

Be sure to wait a day or two for the pcm to settle down to your adjustments.

Grady