Finishing off top end reassemble on 86 5.7 GTA TPI. EGR Solenoid has a connector for a vacuum line to clip in. I can't figure out where that hose comes from (not finding anything obvious). The solenoid has the hoses for the EGR valve the throttle body. Where does the missing hose rout from?

 

One goes from the solenoid to the bottom of the throttle body, as you said. The other goes from the solenoid to the EGR valve.

 

OK- thanks. I've got that. There appears to be a 3rd connection on the "back" of the solenoid, next to the electrical connector. I'm assuming this is vacuum-in. Wondering where it routs from.

 

thats a vent, there should be a foam cube held in by the metal clips.

 

That makes sense. I think the foam thing must be long gone. I'll fab something up. Thank you very much!

 

I have a 88 GTA 5.7 similar question.....which port on the solenoid goes to the EGR valve. the bottom port or top?

 

Having the same issue with mine and couldn't fugure out what went there.... goo to know !

 

thirdgen.org/techboard/showthread.php?t=456315

 

so is it bottom or top that goes to the EGR??

 

Blow in both of the hoses. To the egr solenoid with the car off. One hose you blow into will go out the "vent" (a small port with sponge like element on the end). That is the one that connects to the egr valve. The other port you blow into won't go anywhere. That hose goes to the throttle body. Hope this helps.

 

The bottom metal tube connector on the solenoid connects to port side vacuum under plenum, The plastic tube connector on the solenoid goes to EGR Valve