dave-w744sdv

Hey all I've got an issue with my 2000 turbo! When I'm driving my ecu light lights up and goes out quit a bit, I've worked it out to be fault code 44, I've changed the oem boost control solenoid and resettled the ecu but it still lights up..... I've also cleaned up the dump valve(bailey) and that seems to be dumping ok......is there something simple I've missed??