I have a 1996 Buick century 3.1L V6 that has recently had the head and manifold gaskets replaced. About a month later the car began to shake and sputter a lot in drive. I noticed it did this mainly in the morning or when it just rained. It would only do this in drive. When I was at stop lights I had to put the car in neutral just so it wouldn't stall out on me. It has of course stalled on me numerous times. So I took it to auto zone and they told me it was a code P1441 EVAP system- No flow during purge cycle. Which i knew right away it is most likely the EGR valve or EGR valve gasket or the EGR pipe gasket. So I went ahead and took off the old gasket which was corroded and replaced it with a new one, both the egr and the pipe. It seemed to be running fine for a while. Then today I went to drive somewhere and it started to stall again. I do not know what else it could be besides a vacuum problem and I do not want to replace a ton of parts hoping thats what it is. And if I take it in they are gonna tell me its all kinds of different things and charge me up the wazoo. I could try replacing the cheaper of the parts until I really have to replace the EGR valve. But I am not sure what else it could be besides the canister or the canister solenoid. Please help me out. Thank you

Cars & Trucks - Buick - Century - 1996 Buick Century