Pontiac Repair: egr vavle, pluged, pintle

Question
i just replaced the egr.i am getting some blow by from the new unit. it comes from the 3 valves under the unit.this is on a 1995 firebird with a 3.4 v6  i wonder if it may be a pluged up cat.con.it seems to be running rich.it wont even idle at all

Answer
Hi, check the exhaust coming out of the tailpipe, if have good erxhaust it's not the cat.con. What it sound like that the the solenoid is not working. The ECM grounding each solenoid circuit. this activates the solenoid, raises the pintle. this will have to checked at a repair shop.