Ford E150, O2 Sensor, which side is bank 2?

[Sackett2]

Tell me about it. The stealer replaced my fuel pump twice in 3k miles based upon a "bank 2 O2 sensor throwing a lean code."

When it happened the third time, they decided it was my aftermarket FIPK by K & N. FWIW - It hasn't thrown a code since converting it back to stock.

Needless to say, I have about $400 goodwill at that dealer available to me...

Wow. A fuel pump "Could" produce a lean engine, I suppose, but I wouldn't have started there at all. and after the code came back- usually says your guess was wrong. Lean and rich codes usually go after air leaks or misfires. A vacuum leak adds un-metered air to the mix and the o2 sensor see it and eventually sets a code. you have to determine if the sensor has failed or it's telling the truth.
Baffled at what they were thinking.

 

[Bird]

The O2 sensor I had replaced last week was at 99729 miles on the odometer, but at 93709 when the CEL came on, they said it was a leaking intake manifold gasket. That time cost me over $500.

 

[OKnewguy]

Well gang I got the sensor in and got around to installing it. I hope this takes car of it, wish me luck! How long should it take to find out, 1000 mile or so?
Thanks, Dave

 

[Dmace]

If you reset the CE light and it does not come on within 100 miles or so, you should be good. Also, some vehicles' ECU's go by cycles and not miles so it may take 5-10 on/off cycles of the engine with a few miles each to guarantee the problem is fixed.

 

[OKnewguy]

That is good to know, I did reset the computer. I'll be putting that much mileage on in the next couple of days, so I guess I'll be finding out soon.
Thanks, Dave