Idle control..

[240ez]

What are the causes of high idle for an Rb20det?
Its my swap into my s13.
While its running, it idles at 1500.
I have the idle screw turned almost to were its tight.
How can i adjust it to aleast 1000 or lower?

[RACETUNE]

What are the causes of high idle for an Rb20det?
Its my swap into my s13.
While its running, it idles at 1500.
I have the idle screw turned almost to were its tight.
How can i adjust it to aleast 1000 or lower?

At Idle what is your vacuum reading. You might have a vacuum leak, if not maybe you have a Bad IAC motor. If that is all good, you can adjust the Throttle stopper but you will need to set the TPS sensor.

-Frank Siharath