Sindregutt

Howdy!

I got a T2 with alot of loose hoses, cables and stuff (many have maybe noticed )
I got the AVC but not an air pump.. So what is the point with the avc? it gives me mutch more to wonder about...
I want to get rid of it but if it can give me more to think about ill try to fix it..
So is there any difficulties by removing it?

HAILERS

The ACV feeds AIRPUMP air to the exaust ports and directly to the catalytic converter at given times. It has little to nothing to do with engine air intake or the performance of the engine. If you have no airpump you have no need for the acv. You can leave it in place or remove it.

If you remove it you need to make a covering plate to cover the open hole. If you leave it in place, you don't need the covering plate and can leave any and all holes open if you want..........with one exception. That is the nipple that feeds the boost sensor. That nipple needs to be connected to the boost/pressure sensor.

If the car has a catalytic converter, then you might consider removing the thing at some point because it will likely clogg up later in its life.

Sindregutt

Thanks Hailers! (agian :P)

Is there things about the rx7 you dont know how work? :P

Sindregutt

ehm... something showed up! i removed the ACV from my engine today.. I found a elektric conncetor connected to it.. I think it is a sensor or something like that.. it has to wires, one blue and one B/W.. the blue one goes to the EGR connector in my ECU.. What is this?! it is NOT a EGR solenoid(as far as i know the EGR got vakuuum hoses connected to it, this aint!)
The solenoid is inn contact with the manifoild air thru a filter.. (maybe i can take som pics)
But, anyone know what this is? can i remove it to?

Sindregutt

What is that electric sensor(??) Do i need it?

Sindregutt

No one knows? ..

HAILERS

Your talking about the solenoid with the wiring on it. No, Not needed. It's the Port Air Solenoid. It's disabled after 20,000 miles and is just part of the emissions package. It ported a touch more airpump air to the exaust ports for the first twenty thousand miles.

The picture is upside down to the way it fits on the car.

The large black hose with the two wire clamps on it is the feed hose from the airpump to the acv.

The longest, small black hose is the vacuum source for the boost sensor.

If you turn the picture 180 degrees, the red cap is covering the exaust port on the ACV. And the small hose at the bottom (picture flipped 180), that is the hose for the Relief valve fed from the Relief Solenoid on the other side of the engine (blue connector).

The smallest hose (picture still flipped) is the source of vacuum to the ACV (the only hose that gets vacuum), from the Switching Solenoid on the other side of the engine (grey plug). Helps switch the airpump air b/t the split air pipe and the exaust ports.

What looks like a small black cap, and could just be a cutoff vacuum hose, is the pressure source for the Relief Solenoid on the other side of the engine (blue plug). Airpump pressue goes out this nipple, goes to the other side of the engine to the Relief solenoid then comes back from the Relief solenoid to the very bottom of the ACV to that small nipple at the bottom that I mentioned earlier. It enters the ACV and pushed up on a diaphram. That diaphram determines how airpump air is routed inside the ACV. That's all you need to know since your not going to use it anyway.

Well, the one red cap that hasn't been mentioned is a small puzzle to me. I'm about 99percent sure it goes to the Split Air Pipe which in turn goes to the catalytic converter. That is a bit different than the USA version.

If you unscrew the Port Air Solenoid you will find a poppet valve and its small spring inside. Anything else you need to know? Color of the wires on the connector that that connector attaches to?? One will be black/white and the other.....

torean

the vac hose going to the pressure sensor will have a restrictor pill inside...if u replace the vac tube without that restrictor your car will act funny.......so be sure to use the oem hose if possible.....stealership price....$5 for the restrictor pill..and $15 for the vac hose

AdAm87TuRbO2

Not to jack the thread but dont you just use a t-fitting between the pressure sensor,bov and nipple on the intake after you take the acv off?

HAILERS

The better blockoff plate makers install a nipple in the same location as where the original one is, and run the pressure sensor from there like the stock one.

Good, Better, Best.

Sindregutt

Getting smarter every day
Wel, the one hose that looks like a cap is just a broken hose.. i broke it :S
But, i have asked this question before but didnt get an answer i understood.
Again.. I have now removed the ACV and now i dont know what to do with the remaining hoses(to the ACV) and solenoids++... Should i just cap all the hoses and still have the solenoids connectet?
I also have found more stuff i dont know what to do with.. Fex on the side of the manifoil that is pointing to the transmission there are 5 vac hoses going parallell.. 3 of them to the ACV(i think) 1 is pointing down and the other one is point up but thats it!

There is one bigger hose on the top of the manifoil and one big hose"plugg" abit further against the ACV unit.. what are these for?
And what is the BOV?

HAILERS

The electrical plug that attached to the solenoid on your now removed ACV......leave it alone and just string tie it to the harness.

The three metal nipples that feed the ACV.....cap them off............. There might be a misunderstanding here. First the ACV has three small hose on it Those hose if they were in place would go to a gang of three metal nipples just aft of the ACV. That gang would have had three metal nipples and would run to the back of the intake manifold where they would connect to three of the FIVE you mentioned in your last post. I'm not really expalining this that well. You almost need a dwg or picture.

Your other question at the end seems to be describing the Air Bypass Solenoid and the BAC. I'll try to find a picture tomorrow to attach to a reply.

The five hoses in parallel.....you know about the acv three, so cap them off. I THINK the one that points down is for the now removed EGR. The one pointing up, I THINK is for the fuel pressure regulator. Those should have been shown in one of the jpgs I attached earlier in this post.