po301 jump to p0405 and p0121 on daewoo

hi everyone,pls. help.i have a 2000 daewoo lanos w/ 1.6l engine and got a 69t miles on it.i've been driving the car for a year(bought it used) and suddenly just 2weeks ago it hesitate to run while i'm driving,until it completely stopped.its like the tank is empty that there's no supply of gas to the engine(FULL TANK).CEL is on and i got p0301.change everything(spark plugs,wires...)but still won't start.take off the EGR valve to check,and start the engine w/o EGR valve,the engine runs but too noisy.so i assume that time to replace the EGR valve.i got the EGR valve to autoparts dealer(not the dealership coz its to expensive).still the same problem and i got a new codes,p0405 and p0121.i greatly appreciate your help.