bad gas millage

[94x4runner]

i have a 94 4runner with the v6. my check engine light was coming on randomly and the gas millage took a s***. i pulled the flash codes, the code i got told me that my air mass low meter or o2 sensor were bad both have been replaced and gas millage is still horable. ive hit a wall any thoughts?

 

[KLF]

Have you pulled the EFI fuse the clear the old codes? I would start with this, then drive it, check the codes again.

What type of O2 sensor did you install? Toyota OEM, or cheapo AutoZone aftermarket ones?

 

[94x4runner]

yeah ive cleared the codes twice with the fuse and im getting the same one and yeah i did get an aftermarket one from advanced.

 

[raydouble]

Have you look at this link from the FAQ?
Diagnositc Trouble Codes and Possible Causes

Lots of different things that it could be, good luck.