I must screwed something up when i was running my vacuum lines and need to know where the lines run...... One i know goes to the EGR Valve itself and i thought the other one went to the charcoal canistor. But when i picked up the EGR Soleniod harness i relized the other line is way to short to reach and is molded like it connects to something on the drivers side......Were does the other vacuum line go to ?? ....The set up i am dealing with is off a 89' IROC. Thanks

 

It could go to the cruise control circuit, or possibly the PCV valve...

 

It goes to the vac port on the bottom of the throttle body.

 

Thanks...Okay...that explain why i didn't find any vacuum line to go under the throttle body....Now , which vacuum line goes to the purge canistor? ...I already have one line coming from the passangers side of the throttle body but isn't there another vacuum line?