cel light help

[B.Styles]

Well this is my first post here at , and I hope it a question that I can be helped
with. I have a completely stock 96, it runs fine until idling. After about 10 minutes of
Idling in the drive way it starts to run ruff and throws codes p0171 (system to lean
B1), p0172 (system to rich B1), p0142 (O2 sensor heater circuit B1 S3), and p0138
(high voltage O2 sensor B1S2). Any and all help will be appreciated.
Thanks, Bob

Also, I have checked the fuse I read about, but haven't changed my iac. But still would
the iac contribute to the O2 sensor codes?
I have read other post on similar isues but haven't found any answers to help me out.

 

[winterbeater]

Likely need o2 sensor replaced. Look to see if wires are melted on exhaust.