It does appear to be the engine mount control solenoid valve, Blk/Yel wire is power and Grn/Wht is controlled by the Engine Mount Control Unit. Do some research for that.

EDIT: It appears that around 700 RPM input from the distributor may affect its operation, raise the idle a little by hand ans see if the tick tick goes away.

 

HI,

I took some more picture.
And here is update.

it knocks when I turn on the signal light( signal goes ticktek ticktek ticktek, the valve thing knocks knock knock knock,..when it's idling)
when I push gas, the knocking noise goes away.

And I'm very sure that the valve thing makes nocking sound. When I touch it, I could feel.

and once, when the engine idle and turn on the signal, its rpm goes down as synchronize with knocking noise. it's difficult to describe. it happens some time but knocking noise comes allthe time when engine idle and turn on the signal.

And one hose connected the intake block and the other one goes down and I can't see where it connected.

 

It is for your rear motor mount, what is your idle at now please, from what I read quickly, around 700 ~ 750 RPM seemed to be when this thing made the mount hard, for off idle stiffness. When ever it is supposed to change from no vacuum to with vacuum, you must be hovering at that RPM.

On a side note, would you be interested in taking a few AC System pictures for a very huge project I am working on, only a couple or several, how ever much time you can volunteer please, I can give further details too.

Again, the controller could be bad also, can you see the idle adjust screw under the vacuum hoses above the throttle body, the screw should be at the upper rear area of the throttle body assy. Thin but wide common screwdriver tip is best.

 

Thank you your info. However, could you give me little bit more detail?
English isn't my first language. and also, I'm not a macanic.
I have a no idea what is a vacuum hoses.

And yes, if you need some picture, please let me know.
I'll take as much as possible.

 

Could we please start with the fuse boxes, under the hood and under the dash, pic of the cover and a pic without the cover. I will make a small list for some others, I wont ask for too many. Some pics of connectors and relays and other plugs, I would like to see the color of the wires up close if possible.

http://forum.pgmfi.org/viewtopic.php?t=2007
click on pic at bottom, similar to this please, more to come.

Do you still need help with your problem?

 

The 2 rubber hoses attached to that valve are vacuum hoses. (You called them air hoses.) They're called thatbecause the air pressure inside the hoses is lower than outside.

 

Yes, I want to know where is the idle adjust screw.
I'm going to try that screw first.

thanks guy.