Ford 4.6 running rich

My '03 has a code showing bank 2 running rich. I replaced the O2 sensors on both sides but that hasn't taken care of the prob. looking to see what else would cause this problem. Not sure if it makes a different but I have installed a after market intake.

If you installed a new intake and somehow damaged the mass air flow, that can cause your air/fuel mixture to be inacurate. Make sure you hooked it all back up ok and make a visual inspection on the little hot wire inside the mass air flow to see if something may have gotten on it or in it. Hope that helps some.

after you do what james said you can spray a little contact cleaner on the maf to clean it up,that should fix it

cool I'll try it. the engine only has 70k on it so it's still in good shape. Is contact cleaner the only thing to use or can you use carb/brake cleaner?

has anyone had any problems with the oil put on a k&n type reusable filter causing their map sensor to go bad?