Egr Help

[LaBuick]

Hey everyone I'm new here and have a question regarding egr and smog.

About a month ago my egr was leaking out of the diaphram, so I swaped it for one I found in the junkyard from a fwd cadillac, everything works great , but I'm worried the internal spring pressure on the diaphram might be too stiff or soft compared to my original. Will this cause me to fail my smog test next time?

 

[gofstbuick]

The factory calibrated EGR valve is still available from GM. The programing relies on NOx being controlled a specific amount of flow. The movement of the EGR valve is controlled by the ECM. If you use an EGR the opens too soon, it could create a lean condition. Too little flow could create a rich condition or NOx emissions may be affected. I would advise you to install the correct Delco EGR valve for you vehicle.

 

[LaBuick]

yeah, I was afraid of that, guess I'll just keep an eye out at the yard for one with my origial parts#.