Thanks for all the info and advice guys i needed this help as well!
I bought the ST170 a few days ago with engine light on and had these codes appear when it was diagnosed
I have bought the bosch lambda sensors rear and front from ebay and also the IMRC unit from fordparts.com
only drawback is i cant get them fitted until after a week
i wont have a problem in driving around like a granny until then will i apart from the petrol being pi**ed out constantly by the car lol??