idle problem

[mikemadison_09]

idle drops when car goes into neutral then goes up and drops again then goes to normal could it just be a vacuum line?

[BiG MiKE86]

What BOV setup are you using? Is it Vented or Recirculated?

[steve shadows]

adjust your Idle Air Control valve so the valve is slightly more closed at idle.

sounds like overcorrection for too much idle, due to too much air coming into the engine past the TB

[BiG MiKE86]

adjust your Idle Air Control valve so the valve is slightly more closed at idle.

sounds like overcorrection for too much idle, due to too much air coming into the engine past the TB
So that would lower the idle?

[surreybc]

idle drops when car goes into neutral then goes up and drops again then goes to normal could it just be a vacuum line?


is this the only time that the idle is abnormal? what do you mean by neutral? when you depress the clutch or when you take the car out of gear? there is a neutral swtich on tranny that tells computer when car is in neutral.

[ROIDMONKEY]

vacuum line

[SidewayZ-s14]

Mine does the exact same thing.
I'm guessing mine is due to the HKS BOV not being recirculated?
Could be your BOV as well. :(

[surreybc]

i've unhooked vacuum lines ie the aiv and it only raised idle 100 rpm and was stable.

[mikemadison_09]

mines not turbod yet so no bov and the idle drops when i push in the clutch and put it in neutral

[KiLLeR2001]

My car will do this as well, it'll dip down to about 500 rpms then shoot up a little and eventually level itself out at 850. I think its due to my lightweight flywheel though.. (fidanza)