does any one know why engine dosent hesatate or stall while egr is opened up at idle all pessageways have been checked n appear clear

The head port could be blocked. Can you pull the line off the EGR valve and start the engine see if you are getting flow out of the line.

we blew air through the top of the line and heard it come out the head

i had a 97 automatic that was hesitating badly, wouldn't down shift, and i *think* it was giving some EGR related code - because i replaced the EGR valve with new, gasket, and solenoid to no avail. i finally replaced that little quarter diameter sized filter on the passengers side vacuum hose, $7 from Subaru and all hesitation went away. never had a problem again and a friend now owns that car.

 

i'm not familiar with EGR so listen to others that offer diagnosis, etc - i'm just relaying one experience i had.