My engine is idling very low. it's just idling high enough to stay alive. I know if the idle fluctuates it could be the IACV but my idle isn't fluctuating. it's idling roughly around 250rpm. Cold it idles around 700rpm. its a OBD2 so there are no FITV. I got this problem after installing the Skunk2 Intake Manifold.

 

Sounds like you need to mess with the tps and idle screw

 

adjust the idle, as per procedure.

 

i've tried playing with the adjusting screw and it didn't solve anything. i doubt it's the tps. i never touched it. it's still in its factory place.

 

but did you adjust AS PER PROCEDURE?
that is, disconnect the iac first, then adjust. it is absolutely imperative that you do this first

 

hmm...no i didn't if you put it that way. how would i go about adjusting the screw properly and i'm assuming you adjust it with the car on correct?

 

The first mark is 500, so it's probably right where it needs to be. Use a timing light with an tachometer to confirm.

 

run the vehicle to operating temp. disconnect the iacv. with the iacv disconnected, you want idle to at roughly 500rpm. adjust as necessary. once at 500, reconnect the iacv. rpm should now be at roughly 750rpm. clear codes and idle car for 10 minutes