redeye
SILVER Star
I'm in the process of buttoning up a mini project to get rid of a P0401 CEL. Replaced all vacuum hoses after removing upper intake manifold. Putting it back together and installing a brand new EGR valve I bought a year ago. I just noticed there's an extra threaded hole that goes straight through the valve (ie. not closed at the end). This is different from my old valve.
I have no idea why this hole is there. The only threaded hole on my old one was for the little bracket that holds the modulator valve in place. Pics attached.
Can anyone shed light on this? And what the heck should I do with this valve?
-Ed
I have no idea why this hole is there. The only threaded hole on my old one was for the little bracket that holds the modulator valve in place. Pics attached.


Can anyone shed light on this? And what the heck should I do with this valve?
-Ed