What is this and what does it do?

[dusterdude]

85 305 qjet,what does this piece do?,it mounts to the pass side valve cover.thanks

 

[Lugnut]

85 305 qjet,what does this piece do?,it mounts to the pass side valve cover.thanks

picture might help.

 

[ali_c20]

That's a good question.

 

[oldretiredafguy]

Thingamajig.

 

[Originalthor]

Pcv valve?

 

[Snoots]

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[SquareRoot]

305 E'nuff said.

 

[CorvairGeek]

I'm guessing we are looking at an Electronic Spark Control (knock) module. This one happens to be TBI.

 

[dusterdude]

Ok,ok i get i forgot the damn pic

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[CorvairGeek]

Appears to be a vacuum switching solenoid that is missing a vacuum line.

 

[dusterdude]

Would you know what it switches?

 

[CorvairGeek]

I don't think it is an EGR solenoid, but I really don't know. Does the truck still have a vacuum diagram?

 

[dusterdude]

After using my noodle for more than a bad haircut,it appears to have something to do with the egr valve.since i dont have an egr any longer it will be removed.someone correct me if im wrong.thanks

 

[Turbo4whl]

I'm spitballing here, but I'd bet that is an engine from a newer truck with a throttle body injection. This picture of the 1987 throttle body shows an EGR solenoid.

So yes, you don't need it.

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[newguy11]

From my 1985- 305.
I’m pretty sure it’s the egr bleed solenoid