E39 528i 1999 O2 Sensor trouble

[Mike131]

Hi
I have a 1999 528i E39, the problem I have is getting at one of the front sensors which I can just about see, can anyone give me any tips,or has anyone managed to change both sensors, I will be grateful for any help.
Mike.

[FP5241]

bump

[veritas]

go to autozone, rent an o2 sensor replacement set ($25 deposit), then purchase an extension and rachet (if you don't have one). I did it for the first time a few days ago and it took me about an hour. i returned everything after i was done. fairly simple, don't be afraid to work on your car, and you may end up bending the heat shield near sensor 2 if you're not careful. but you can always bend it back. this is relatively easy and you're a chump if you cop out on it so get to work!

[jamesdc4]

E39 528i anybody ever changed front o2 sensors (http://forums.bimmerforums.com/forum/showthread.php?t=1178414)

[FP5241]

E39 528i anybody ever changed front o2 sensors (http://forums.bimmerforums.com/forum/showthread.php?t=1178414)

STOP THAT!!!
Now I'm stuck in a link wormhole.. :(

[Mike131]

I have just been told because it is automatic that you must remove exhuast to replace the pre cat sensors, ( I hope thats not the case )

[jamesdc4]

I have just been told because it is automatic that you must remove exhuast to replace the pre cat sensors, ( I hope thats not the case )
I'm not sure about the i6, but that doesn't sound right. Who told you that?

[RJLupin]

Mine is a I6 auto and changed them a couple of weeks ago .. no need to remove anything except the sensors themselves ..