ENGINE CODE PO171 AND PO174 ON SATURN L300 - 2005 Saturn L-Series

SOURCE: Check Engine Light

my steering column is no good

SOURCE: check engine light with code PO171 and PO174 running lean

Just check all vacuum lnes, especially pcv hoses and if all of that is ok, it's a good chance your intake spacer is leaking. Actually the gaskets under the upper intake leak, but, it's a good idea to replace the whole spacer

SOURCE: 1999 ford windstar 3.8 eng miss

remove the plenum take out injectors have them rebuilt change your plugs should clearup problem.  
ps if you have blowby problem could come back in a few months of driving.

SOURCE: check engine light with codes

Both codes are system too lean bank 1 & bank 2. Most likely a vacuum leak. Check all vacuum hoses for broken, kinked, collapsed or missing.