I'm missing a vacuum line to whatever that piece is... so what is it? Also, where does that vacuum line go to? I've already got one hooked up to that piece and it runs to the hose near the fuel lines. So, where's the other one go?

Jesse (kinda forgot things after taking it apart 7 months ago )

 

Found out what it is: EVAP canister purge solenoid valve. Next question, if I don't have an evap. canister, can I delete this? I'm not sure if I actually replaced it when I built the car.

Therefore, can I just remove it and plug the throttle-body?

Jesse

 

If you don't have a canister, there is little need for the solenoid. Cap the tube on the throttle body. Your OBD-I computer will probably not complain about it, but if it does, you can have it programmed out. FYI, having the EVAP (or even EGR) does not hurt performance any.

 

Is it the doohickey with the red/blue plug, and has 2 nipples ( I said nipples) facing the firewall? If so one is suppose to be a vent I believe and the other is the vacuuma line for the fuel pressure regulator I think (going from memory) but them again I dunno if my 96 is different from your 94 in that area

Myles

 

Ive been wondering this since both of mine are open and I have a code related to this. Does the fuel regulator vacuume line go to one of these?

 

Your fuel pressure regulator vaccum line should go to the bottom intake fitting on the passenger side of the intake. Right below the vaccum line for you a/c.

 

Ok, thanks thats what I thought.

 

Radiator hold down bracket should have a sticker with vacuum hose routing on it..

 

what exactly does the EVAP do? Is it really needed? shoebox?

Itd be kinda nice to get rid of it off the side of the intake, clean up the engine a little more.

 

hmm... I don't think I have a vac line running to the AC... Where does the line connect to the AC? Anybody have a picture of that?

 

It begins right on the intake manifold, in that same area, and it goes into a wiring harness, and then to the dash heater/AC controls..
That's the hissing that you hear when changing positions...

 

heres a pic of the evap system on a 96-97. here for a 93-95.

now since we are talkin about EVAP(kinda) what is the need for that extra round shaped device on the 96-97?

 

It pulls gasoline vapors from the gas tank and feeds them to the engine to be burned. A correctly operating EVAP system does not hurt performance and reduces ozone.

 

Where the vacuum line goes.

 

The "round thing" is a vacuum switch that the OBD-II system uses as a watch dog on the EVAP system. It tells the pcm if the system is acutally working when it is supposed to.