96 contour v6 giving codes

I'm wanting help trying to figure out what is wrong wiht my car this started last sat. my gf went out to start the car and it would start but then die right away it was really cold that night so I tried it later that morning runs fine on the highway but you get stoped and it surges, I have replaced the spark plugs, iac valve, iat sensor and tp sensor but it still is running funny only codes that have pulled are 113 that was befor I relplaced the iat sensor, now the codes are p0171 and p0174, could anyone please let me know anything that could be causing this problem


thanks

I'm wanting help trying to figure out what is wrong wiht my car this started last sat. my gf went out to start the car and it would start but then die right away it was really cold that night so I tried it later that morning runs fine on the highway but you get stoped and it surges, I have replaced the spark plugs, iac valve, iat sensor and tp sensor but it still is running funny only codes that have pulled are 113 that was befor I relplaced the iat sensor, now the codes are p0171 and p0174, could anyone please let me know anything that could be causing this problem


thanks

Your getting 2 lean codes, one for each bank. I would inspect for vacuum leaks first. That would give the exact problems that your describing. If you can't find any vacuum leaks, trying cleaning the maf wires as described on the how-to on contour.org.