Idle problems

[Ivan141]

It is mounted to the throttle body, and it means auxiliary air valve.
Oven cleaner is just a solvent for cleaning ovens, available at your local Maxi I'm sure.

[Hachi]

thx... i found it on toydiy...

as for the oven cleaner... lol
i thought its refering to some special oven for cleaning... like some injector cleaner

as for liquid oven cleaner, i know just the thing to buy...

[jondee86]

max_ae86 Wrote:So, after cleaning AAV and bleeding cooling system of air bubbles, I got
900 rpm warm idle Not bed as there is -1 C outside. Of course, it
could be better but as I don't have this adjusting tool 900 rpm is better
then 1200-1300 as before.

Now that you have the AAV working correctly, you can make small
adjustments to the warm idle with the Idle Air Adjustment Screw that
is located down the tube at the side of the throttle body. Sometimes
there is a black rubber cap on top of the tube. Turn the screw clockwise
to lower the idle speed.

Cheers... jondee86

[max_ae86]

jondee86 Wrote:Now that you have the AAV working correctly, you can make small
adjustments to the warm idle with the Idle Air Adjustment Screw that
is located down the tube at the side of the throttle body. Sometimes
there is a black rubber cap on top of the tube. Turn the screw clockwise
to lower the idle speed.

Cheers... jondee86

Unfortunately, it's already in lowest position. As I said, there is an adjustable plate inside AAV but you need the special key to adjust it. So it can be adjusted from the inside as well. :wink:

[max_ae86]

Hachi Wrote:thx... i found it on toydiy...

as for the oven cleaner... lol
i thought its refering to some special oven for cleaning... like some injector cleaner

as for liquid oven cleaner, i know just the thing to buy...

I've tried to clean it with the brake cleaner first but with no results.
It's not exactly the oven cleaner but for cleaning fireplaces glass screen. Basically it's the same thing. It looks like this:

[Hachi]

yyy i get it now...
i just understand it differently...

any other tip? u boild it to clean it better?

[max_ae86]

Hachi Wrote:yyy i get it now...
i just understand it differently...

any other tip? u boild it to clean it better?

I boiled it after cleaning just to check it's operation. The black cone should come up and close the bypass hole. Some small amount of air will still pass.

There are no special tips, you just have to:
1) Remove throttle
2) Take off AAV (5 small screws under throttle body)
3) Clean it with solvent, then with water. Repeat a few times. It’s good to change water temperature to make some movements inside during cleaning. You'll se all dirt and black water coming out each time. Repeat until it's clean.
4) Dry it and put just a little WD40 inside.
5) Put all back together. Probably you will need to change gasket + small o-ring. I bought new rubber o-ring and made gasket from special paper.
6) Run the engine and bleed the cooling system from air bubbles.

...and I hope you will get at least 200-300 rpm lower idle.

[max_ae86]

... and few more things. When you remove throttle it's good to:

1) Replace 2 seals on the butterfly shaft to prevent false air coming in and reduce shaft vibrations. I think I manage to find 15/8 seals, the original is 15/9 (as far as I remember, better mesure it first) and it’s very hard to find. Put some grease during replacement.
2) Inspect throttle plate and shaft from wear and sharp edges (usually occurs on plate sides and cause "sticky" throttle feel). Carefully remove sharp edges (if there is any).

[irishtwincam]

Excellent pic

http://www.aeu86.org/download/ae86/id/13759.jpg

How did you get the yellow wax thing out of the end?

http://i199.photobucket.com/albums/aa307...0_1534.jpg

max_ae86 Wrote:I opened it and there is moving cone (black) and plate with the hole. This picture is taken in boiled water so the cone almost close the hole for bypass air. The plate can be screwed in and out but I do not have such tool.

[max_ae86]

irishtwincam Wrote:Excellent pic

http://www.aeu86.org/download/ae86/id/13759.jpg

How did you get the yellow wax thing out of the end?

http://i199.photobucket.com/albums/aa307...0_1534.jpg

On this picture is my spare aav, so I opened it just to see what is inside and to take a few pictures for you guys. Actually it was very easy. First I removed silicon and just drilled a small hole in the middle of the plate, put the screw in and pull it out.
I think this could be done with some kind of vacuum puller as well, to avoid drilling :wink: It goes out preaty easy.

NOTE: For cleaning aav it is not necessary to remove this outer plate. But if you want to try to make adjustment of inner plate (with bypass hole) then you must opened it. I personaly didn't manage to move inner plate, I do not have such tool.