vivaro 2001 keeps holding back then cutting out?

bought 01 vivaro non runner,had 2 injectors done because of leak back,fitted them back and started straight away.took it for run and it held back then cut out with eng stop light coming on,started up again after turning over for 10 secs ish.tried turbo boost sensor and trottle sensor after they showed up active on data.still holds back and cuts out.help please its driving me mad!!!