O2 Sensors!

[Cokewell]

I've been watching this CEL go on and off for about two months now and a code check revealed bad oxygen sensors. I plan on replacing them all at once. The thing is that I don't know exactly how many I need (I've been told 4), if the pre and post-cat sensors are the same, or where I can buy them without breaking the damn bank. If anyone knows the answer to my questions please go ahead and post a reply. I found them on Bimmerparts.com for 75$ a piece but I know they can be had for less. Too bad BF.C's search function is down. :cry:

-----> OBDII M3

Thanks in advance!

[aeryk7]

A code scanner should be able to tell you which 02 sensor is bad and replace just that one it would save you money. Replacing all 4 would be good but would be costing more money than needed.

[His ///M-inence]

You could go ahead and get software to turn off 02 monitoring all together. should be cheaper than four new 02 sensors.:read:

I did it because I'm changing my headers. (no more cats)

[TheDarkSide]

A code scanner should be able to tell you which 02 sensor is bad and replace just that one it would save you money. Replacing all 4 would be good but would be costing more money than needed.

That is what I was thinking. Why change all of them?

[Cokewell]

It's how I do my maintainance. But ///M-inence ... talking simulators? Know of anyone that makes these? I know Active does but they dont have it listed as aproduct on their website.

[TheDarkSide]

I was on their site few days ago and saw a few things missing. Maybe they are weeding out some of their old line.

[M52 POWER!]

Call AA about their sims, then just replace the first 2 pre-cat O2 sensors. You can only simulate the 2 post-cat sensors btw...

[Cokewell]

Yep they only monitor cat performance, don't want to **** with the first two and their air/fuel monitoring.