Quote:
Originally Posted by Shipkiller
nekky,
I am sorry if this comes off a bit brusk, but if you would have performed a basic Google search on 'BMW P2629', you would have been rewarded with
P2629 O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 1
This is the pre-cat sensor (B2S1) on cylinders 4-6.
Personally, I would only replaced the failed sensor.
|
No apology necessary! I had done the search, and that's what I found.
When looking at ECStuning's webpage
http://www.ecstuning.com/BMW-Z4-M_Ro...Oxygen_Sensor/ I am a bit confused. When you say "pre-cat", is that "pre-(secondary)cat"? They all say that they're located in the exhaust manifold, AFTER the cat (the primary). They say "rear position of manifold" for all four sensors they have available (two Bosch and two BMW).
I have extremely cheap access to the Bosch units, although I've heard they are lower quality. They are half to 25% of the price of BMW units, so that's what I'll be using.
Thanks again for the help, guys!