well i have a d16z6 motor with a greddy turbo kit on it and it is having a rough idle which jumps from 1000rpm to 1800rpm back and forth non stop at idle and i thought it was a fast idle valve so i replaced it and no help and my iac valve is also good and i have no vacuum leaks would this be due to a bad map sensor plz help?

 

Is your check engine light on?
If so, what codes are being thrown?

 

yea it is and i havent checked it

 

Check the code & get back to us with the results.
If you don't know how, read http://www.phearable.net/tech/