The hose above this one? My car isn't idling on its own when it's plugged in. But when I take it off it idles high but at least it keeps it idling. Is there any fix to this?
May sound stupid but would that not being plugged in cause it to run like crap?

 

That vacuum hose goes to the black canister. I would troubleshoot issues with your IACV.

 

The one with the circle you can plug off, the one up top facing the front of the motor should be plugged in the Black PCV box the rear hose should be plugged to the brake booster.


Yes if its unplugged you will get a vacuum leak.