engine

What is your question?

a few days ago oil light came on but checked and oil was full therefore was told it could be a faulty oil sending unit which i changed and after driving for about 15 minutes light came back on and was told it must be bad oil pump which have been changed now light has stopped coming on but is getting a rattling sound from engine when accelerating don't know what the cause of this could be any help will be appreciated because i love the car just hope it is nothing real major.