idle problem.....s15 noob here,help!

[reillypadraig]

ok i have a s15 spec-s and i put a turbo engine in it about a month ago, a few days ago the idle went bit wierd on me and now with clutch out its idling at 1500. and with the clutch in it rises to 2200 and if left for say 30seconds with clutch in it drops and rises from 1700 to 2400. just wondering what the problem could be. since this problem the boost has been seriously jumpy up till 3500rpm.

 

[meddler]

I would say you have a vacuum leak somewhere. Check all your piping for loose clamps or spilt hoses.

 

[sx-si]

i duno possiablly a small boost leek like one of the small boost lines for guages
might be a manifold/ turbo gasket
is it only after you start the car up (warm up) or is it when its hot?

take a pic of the engine bay as you might of done somthing wrong

 

[Auss15]

Clean your AFM,Check your O2 sensor. What blow off valve are you using? Also worth cleaning your AAC valve on your plenum. They can get a bit sticky