vacuum control box

[cleanjdm]

my vacuum control box isnt working!!! there is no vacuum at all from those three or four hoses that go by the tb on my friends new h swapped 2 door. he recently bought the car with a blown h22 and we replaced it with a new one. the car was sitting for about three years. It still starts but has a jumpy idle from 700 to 4000 rpms with no ecu codes. Do i have to simply "jump" the box and figure out which wires need power? plz help

[dj_ender]

my vacuum control box isnt working!!! there is no vacuum at all from those three or four hoses that go by the tb on my friends new h swapped 2 door. he recently bought the car with a blown h22 and we replaced it with a new one. the car was sitting for about three years. It still starts but has a jumpy idle from 700 to 4000 rpms with no ecu codes. Do i have to simply "jump" the box and figure out which wires need power? plz help

What? There will be vacuum from those ports if the engine is running, otherwise they are plugged. The jumping idle is most likely from a vacuum leak.

[cleanjdm]

no, the actual box located near the back left side of the firewall is suppose to be sucking in air, and when u unplug number 21 from the tb the car is suppose to die. this unit is not working at all. so no shit it acts like a leak

[dj_ender]

no, the actual box located near the back left side of the firewall is suppose to be sucking in air, and when u unplug number 21 from the tb the car is suppose to die. this unit is not working at all. so no shit it acts like a leak

You said in your OP that there was no vacuum coming from the hoses that hook to the IM. That's what I was referring to. If that's not what you meant, maybe you should go back and edit your post.

[cleanjdm]

bump
or should i just look in my big ass technical honda accord book?

[dj_ender]

bump
or should i just look in my big ass technical honda accord book?

From my understanding the box doesn't "create" vacuum, rather "harnesses" the vacuum from the engine and stores/uses it.

[GXLancer]

Maybe some of the check valves were installed backwards or the vacuum hose is cloged with debris.
Im going to have to agree with dj ender, I dont believe there is anything in that box that creates its own vacuum, there would have to be a motor or vacuum in there that makes suction, but maybe there is. If thats the case I guess you would have to replace the part that was bad.
Sorry I dont have a better answere. Just did my swap and my only concern is where the heck do all these hoses go! I guess I got them in the right spots cause it seems to be running good for the moment.

[Losiracer2]

Maybe some of the check valves were installed backwards or the vacuum hose is cloged with debris.
Im going to have to agree with dj ender, I dont believe there is anything in that box that creates its own vacuum, there would have to be a motor or vacuum in there that makes suction, but maybe there is. If thats the case I guess you would have to replace the part that was bad.
Sorry I dont have a better answere. Just did my swap and my only concern is where the heck do all these hoses go! I guess I got them in the right spots cause it seems to be running good for the moment.

yeah make sure that white check valve is going in the right direction, you can blow into it to see which way the air goes and make sure its going to the manifold.

[cleanjdm]

yeah make sure that white check valve is going in the right direction, you can blow into it to see which way the air goes and make sure its going to the manifold.

ill check it out...

[dj_ender]

yeah make sure that white check valve is going in the right direction, you can blow into it to see which way the air goes and make sure its going to the manifold.

Your talking the IAB box, he's talking the emissions box.

[cleanjdm]

Your talking the IAB box, he's talking the emissions box.

yes, im referring to the box just right on the fuse box

[Losiracer2]

yes, im referring to the box just right on the fuse box

http://www.hondaautomotiveparts.com/...y5=CONTROL+BOX

Just trace every vac. hose in this picture and make sure yours matches up

[cloudasc]

This is for a f22a6, but it should help

[cleanjdm]

ok i figured it out!! thank you guys for all the helpful info. the problem was that there were no upper plenum gaskets!!! stupid i know.....btw its my new 93 2 door wit obd1 f20b and m2a4...ill post pics up later