hey, i just reacently bought this hatchback and im trying to fix all the small things on it, but any ways the guy says its a d16y7 with a y8 head. and i dont know if doing that head swap would cause some vaccuum lines to be deleted of something, idk. but it idles at 2,000rpm, so if you can help me it would be much appreciated

 

have u tried adjusting the idle screw on the throttle body?

 

well check for vac leak and put ur hand over the open tb if car dies no leak if still runs def has leak

 

yea the idle adjust screw is all the way in. if i screw it out the idle goes up.
ok i guess the next thing to do is cover the tb with my hand. thanks, would anyone happen to know if there are extra or less vacuum line that dont exist on the y7? im not too knowledgeable about this head swap.

 

bumpppp tttt

 

thanks^

 

the Y7 should have the same ports just in different spots but more importantly which manifold did you run?

the Y7 comes with a 3 wire IACV if i am not mistaken? the Y8 with a manual trans will have a two wire.

 

well i didnt do the head swap, as i previously said, but im just trying to find where all the vacuum hoses go

 

what intake manifold are you using, cause i believe the Y7 intake is different than the Y8, in fact i am positive it is.

a small vacuum line for the FPR, large hose to the brake booster out of the back of the manifold. 5/16 hose for the PCV valve and selinoid valve for the EVAP system that is mounted on the fuel rail. and also a 5-16 hose going from the top center of the manifold to the fast idle valve that is ontop of the thermostat housing.

i believe that is it for the Y8 manifold i don't know the Y7 manifold

 

i am using this intake manifold if it helps

 

Do you have an IACV or any other CEL codes? Is the connector for IACV at the bottom of the throttle body plugged in?

 

^^ there was a cel for the iacv but after i cleaned it it when away

 

As already suggested, I think you have an intake air or vacuum leak. Can you kill the idling engine by covering the top of the throttle body with your hand?