My CEL has recently started coming up solid on my way home from work. It never comes on in the morning but does about halfway home. I drive 80 miles round trip and hit traffic everyday. So I'm stop and go usually. CEL will turn off after I turn my car off and then shortly after start it again but CEL light will come on again after about 15 mins. I got the Code from my ECM under the passenger carpet and it read 12-Exhaust Gas Recirculatory System. I know that this is usually only used for idling or light throttle. I dont get any suction from the hose (Hose 16) that connects to the stem on the valve. So to see if it was a bad EGR valve I manually created suction with the hose connected to the stem (Hose 16) and the car started to stall. I have no idea where that hose connects to on the other end. It goes into another stem behind a box where there are 2 more hoses. (Hose 20 and ?) I do notice my exhaust is more potent and do have a little more smog than usual. Other than that car runs great. Any Ideas why I dont have vacuum or why this problem is happening.