A while back, I replaced my valve cover gaskets. In the process I took a black square thing off with a hose connected to it. It's on the passenger side. And now my check engine light is on. I'm guessing this is why. 1985 delta 88. 307

 

Have you pulled a code?

 

Possibly a egr vacuum switch

 

No. I tried to jump it with a paper clip but it doesn't flash like it's supposed to. It stays solid

 

I think it's supposed to look like this:



http://www.oreillyauto.com/site/c/de...2124&ppt=C0018

 

 

I think you're right. I really appreciate that!