I am trying to connect the EGR solenoid however, although I connected the pipes to proper lines, my car dies when I come to a full stop. When I disconnect the TB vacuum source off the solenoid all is fine so I either have a solenoid problem or EGR valve problem.
Please look at the upper right hand corner on the solenoid picture.
You will see a THIN metal "thing", I wonder if it is a hose connector? That particular area also has a small pipe-like portrusion with a pinpoint hole in the middle where it is connected to the solenoid body. This pin hole has a connection in the
INSIDE; observable when vacuum source line (thinner black plastic pipe on the bottom) is disconnected from the bottom of the solenoid as the vacuum source pipe has an access to that pinpoint hole via an o-ring. This is a "closed system" but accessible apparently in case o-ring needs to be changed.
So basically the upper (thicker and made of brass-colored metal) pipe
connects to the EGR valve and the lower thinner black plastic pipe connects to the vacuum source (throttle body).
What about that pin hole opening? Is it supposed to be "closed", as it needs to be connected to something or is it supposed to be left like that (if so why the metal holding brackets around the small portrusion with pin hole)?
I ask that because during operation, since this pinhole has passage into the inside of the vacuum source line, it seems to me that the vacuum cannot be created properly and/or enough or even if created will create leakage, due to that pinpoint hole's unrestricted access to the air pressure outside.
Besides, when I close up the vacuum source line dead, the car works just fine (although I wonder if the whole system is failing because of that pinpoint hole, messed up EGR valve, or solenoid?)
What do you think?