My car failed emissions because the NOx was really high. The guy that did the test said check the EGR, looking under the hood I found a broken vac. line between the solenoid and vac. plate, after fixing it I still have no vacuum to the EGR. By the way, I can unplug the solenoid and get vacuum all the way to the EGR, does this mean the solenoid is bad or do I have to be driving the car to reach a certain RPM before the solenoid works to let the vacuum through. Please let me know what you guys think.