4AGE 20V sensor troubles

[von*]

I've got some question about blacktop!!!

I receive my engine with a broken sensor (I think it's a sensor) and when I remove the sensor I find a hole without thread :





This is the throttle body' side of the engine.

The broken "sensor" :







I want know what's this sensor and if it's the good fixing (without thread)

Other problem :

I don't have the knock sensor : there are two holes under the throttle body and I don't know where it is located...

Last problem :

I've the purge valve :



But I don't know how it's "wired" (the vacuum hoses)

I hope someone can help me or show me pics of this side of the engine.

I wait for your answer, thanks...