What is this thing

[DaemonForce]

Also, what is it SUPPOSED to do? I notice no function with it plugged in or otherwise. I just unbolted it from the passenger side of my engine compartment(it's next to the coil and dist) and cleaned it up some. Completely sludged up. It plugs into a harness that goes to the ignition system but the vacuum lines are weird. It goes into a rubber bracer with one line capped off and the other T's into a line going to an uncapped T(Warning:vacuum leak...?) and ultimately to a small line that goes to the charcoal cannister. What is this little bugger called and what does it DO? Replace it? Deprecated? What? O_o

[DaemonForce]

Funny, that's the same conclusion I reached upon realizing it's connected to the black canister.

Okay I've routed the vacuum can to my 4x4, capped the vacuum line under my carb and now I have a vacuum ball without any real purpose. :/

[ammachine390]

They are actually not solenoids. They are switches. They open and close as engine vacuum levels change. They control 2 circuits for the ECM. If the ECM has been bypassed, or the carb has been changed, then they do not do anything.

[eaglebeek]

This link home.sprynet.com/~dale02/ is the best I've found for explaining the original systems on the 258. It's Jeep-oriented but applies to Eagles.

What you have there are the 10" and 4" vacuum switches. The green one is electrically closed until manifold vacuum reaches 10" mercury. The other is electrically open until ported vacuum reaches 4" mercury. Together they tell the on-board computer how far open the throttle is. The two switches are essentially the throttle position sensor on other cars.

[DaemonForce]

They don't do anything in my case. Oh and since I already defeated the purpose of this vacuum system, there's no place for this sort of thing anymore even if I had a replacement unit. Junk!


Now I just need to eviscerate all the other pointless garbage.