Truck has been dying surging and dying when i come to stop at li

1992 f-250 5.0 ltr 2wh dr. truck has been dying at when i come to s stop at stop lights not all of the time ford computer said to change intake air gasket and a sensor under throttle body( did that last year after computer test) egr,evp(on top of egr) and idle air control valve. i changed egr ( 2weks ago ) truck ran great until friday. changed EVP and IACV yesterday, did diconect bat cable, drove 20 miles and truck is still surging and dying ( not at every stop ) autozone pulled codes 332&334 and told me that there wher 2 EVP sensors 1- postion ( i changed and they carry) 2 pressure (they dont carry) what should i try next?