96 MC 3.4l air pump problems

[96MonteCarlo34]

Anyone here have experience with the PO140 code? I am getting told it is the O2 sensor before the cat and other hand I getting told it is the air pump. People at pep boys and advanced auto said air pump or the fuse to the air pump. I was told that the humming I hearing every so often is the pump kicking on and off.

[ctwright]

Originally Posted by 96MonteCarlo34

Anyone here have experience with the PO140 code? I am getting told it is the O2 sensor before the cat and other hand I getting told it is the air pump. People at pep boys and advanced auto said air pump or the fuse to the air pump. I was told that the humming I hearing every so often is the pump kicking on and off.

Ok, are you sure exactly that it is a P0140, that is the oxygen sensor. P0410 is air pump so I can see the mix up.

www.obd-codes.com/p0140 and www.obd-codes.com/p0410