I'm pulling Code 12 -Idle Air Bypass motor not controlling idle properly (generally idle too low), but i have a new IAC. I have been extensively trying to chase my surging idle problem which I think I've taken care of. I'm still trying to set the base idle just right so it's definitely possible my idle is set too low although I thought it anything it was set higher than it should be.
My question is if my IAC is new, then would I be pulling a code 12 b/c my base idle is set too low or perhaps the IAC plug/wiring might have an issue?
Not sure why setting my idle has proven difficult. With IAC unplugged, I brought my base idle down pretty low (600), but could tell it was not smooth i.e. pulsating a little, so I increased the idle until it smooth out, but still kept it around 650ish. Seems like I can move the screw quite a bit either way and still stay within the 600 range? Maybe this is normal or do I need to wait a little longer to let idle move before continuing to make adjustments? I then plugged IAC back in and turned car on which brings RPMs up to 900ish (very smooth). After a few moments idle settles at 700-750ish which seems where I want it to be.
Just to confirm- with IAC unplugged, bring idle down as low as possible (600-750), plug IAC back in and idle should be 50 to 100 RPM higher (ultimately between 650-750)
My question is if my IAC is new, then would I be pulling a code 12 b/c my base idle is set too low or perhaps the IAC plug/wiring might have an issue?
Not sure why setting my idle has proven difficult. With IAC unplugged, I brought my base idle down pretty low (600), but could tell it was not smooth i.e. pulsating a little, so I increased the idle until it smooth out, but still kept it around 650ish. Seems like I can move the screw quite a bit either way and still stay within the 600 range? Maybe this is normal or do I need to wait a little longer to let idle move before continuing to make adjustments? I then plugged IAC back in and turned car on which brings RPMs up to 900ish (very smooth). After a few moments idle settles at 700-750ish which seems where I want it to be.
Just to confirm- with IAC unplugged, bring idle down as low as possible (600-750), plug IAC back in and idle should be 50 to 100 RPM higher (ultimately between 650-750)