Idle problem

[bellisbusa]

i have a 05 busa, started it up for the first time in 2 weeks after doing some nitrous work, and now it won't idle below 1700rpms and does it roughly. It moves from 1500 to 1900 fluctuating continuously. I turned the idle screw all the way out and it still won't change it. Any ideas? Maybe getting air somewhere or something?

Thanks

 

[firebug]

Check the vacuum lines for leaks or one being disconnected.

 

[Busa45]

Yeah, sounds like a hose has come off or not put back on somewhere. But, I has a similar problem, checked all the hoses and sensors. I had a bad inlet air temp sensor in the air box. Replaced it (about $40) and runs like new now.

 

[rubber2burn]

After checking for the Vaccum leak do a throttle body sync as well should help smooth things out.