i checked every vacume hose in the engine i took them off cleaned themand put them back on i then tested them all with brake cleaner and nothing i also tested the EGR valve with the help of my neighbour who is a mechanic i think it is the MAF sensor as i heard this may cause the codes i put on a simlar MAF from his van and my trim reading went down to 26.7 from 29 .9 he told me they should be around 12 or lower just wanted to check with you guys as you have been so much help
many thanks wilky