When I was replacing my EGR solenoid I pulled the vacuum tubes out of the solenoid. I put them back but was curious if it mattered which went to the throttle body and which one went to the EGR valve? Or are they both the same? I'm thinking if there is a difference between the two I may have hooked them up backwards.
Thanks

 

They're not both the same. The one that goes to the egr will vent. The other that goes to the TB will dead head, otherwise it will be a vacuum leak, and you'll also get a code 32. I don't remember which one is which off hand. You could search or test it out yourself with a vacuum pump or you know blowing through it.

 

Right: The one you can blow through when the solenoid is not powered, is the one that goes to the valve.

 

So if I unplug the vacuum line at the throttle body (easier to access) and blow through it easily then it is not in the right orifice in the EGR solenoid.

 

Don't think "throttle body"; think, "EGR solenoid". The solenoid has 2 connections. Blow through each.

If you can blow through it easily, it's the one that belongs going to the valve.

If you CAN'T blow through it, it goes to the vacuum source, probably the throttle body.

Iunno DIDDLY, nor CARE, about "easy to access". Either you DO want to know, in which case you'll do what it takes to find out; or you DON'T, in which case you're like all the other poseurs out there that either want to be spoon-fed, or don't want to exert themselves in the slightest. Which are YOU???

Get off your butt and JUST DO IT.

 

I had it hooked up correctly. I blew through the TB vacuum line because it was easiest to access. I just switch what tube it was in (front to back) on the EGR solenoid until I couldn't blow through it. The other side blew through.