I'm thinking maybe i could replace the air shocks with gas charged ones an maybe i will save some money

All of a sudden the dam air pump quit working so therefor the rear air shocks also not working and the travel gets worse every min, does anybody may know the problem

replaced both rear shocks; van has ELS (electronic level sensor); used to work fine but now the van rides really high & I have to manually release air from shocks by disconnecting/then reconnect either shock air line. Any help or advise is appreciated.