yea so i have a dohc ka and when the car is in neutral and i rev the engine the car revs go up like normal but then when coming back down it stays at about 1500 rpm and then goes down a few seconds later, the same thing happens when im driving and coming to a stop. but i looked at the engine and found this vacuum hose sittin in the bay hooked up to nothin. ive tried to look for vacuum hose diagrams for a dohc but cant find any so can one of you guys send me a link or something where is shows where hoses go to!!!!

look at fsm

with such a terrible quality picture.. that vacuum hose looks like it goes to the charcoal canister.. just plug it.

look under your throttle body and make sure they are either plugged or have a hose on them

yea it doesnt seem like it goes to the canister and the throttle body is fine but what ever i really dont care, havin a messed up idle makes me cool as fuk

that should be for some emissions shit. i took all mine out and it idles like shit too. but it did that before i ripped all my emissions shit out. that hose doesn nothing really. it might be your ivac. im pretty sure thats my problem or maybe the maf sensor. your in the same boat as me bro.

yea just remove all the emission thats what i ended up doing last weekend and for skyvia686 try adjusting your timing and your idle cont. valve my purrs like a lil kitten lol