I investigated removing the 3/2 box connections from my 81 300d this weekend as i've read about here, but was confounded on what to take out and plug back in.

So instead I pulled the cap and replaced or repaired the small hoses inside that were old or cracked (2 were bad). And as expected she shift much much better.

It did get me thinking (not always a good thing) about the egr valve that has a ball bearing in the vacuum line from the 3/2 box, and I was wondering.......

is it closed when there is no vacuum signal? or open?

__________________
Brer
San Diego, Ca.

81' 300D
73' Porsche 914
99' Subaru Outback

The EGR valve should be closed with no vacuum signal. However, it is a good idea to remove and check for carbon build-up on the valve seat that would prevent it from closing all the way.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )

thanks for the reply.
I thought i might do that.

__________________
Brer
San Diego, Ca.

81' 300D
73' Porsche 914
99' Subaru Outback