Or you can spend $10 at Kragen and just buy the bits for your ratchet. I would suggest doing that rather than messing up the screws for good.
BTW I am having the exact same problem with my 99CSVT. Codes P0171&P0174 for about 2 months now. New 02 sensors (ALL FOUR), New MAF, cleaned TB, checked all hoses, listened around engine compartment with a stethoscope for air leaks (none to be found), sprayed TB cleaner all over intake manifold (again, no leaks to be found).
Funny thing is, My MAF sensor which I just bought brand spanking new from ford came without any gasket between the sensor part and the plastic air intake tube?! I am thinking this might be causing my problem. (Do you guys agree?) IF I need a gasket there, where could I get one or should I just make one using gasket material from Kragen?
Sorry for the long post, several questions here...
-Glenn
