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1-19 of 34 Results
  1. E46 General
    Any ideas why I would be getting this error with brand new o2 sensors? I replaced all 4 earlier today.
  2. Driveline, Performance, Tuning
    I've just ordered eBay headers (these: For BMW E46 E39 Z4 2.5L 2.8L 3.0L L6 01-06 Performance Exhaust Manifold Headers | eBay), and I assume that most eBay headers are exactly the same, and from what I can tell I won't be able to fit the O2 sensors without relocating the mount on the header...
  3. E46 General
    Basically, I have a 2005 BMW 325i and I am trying to replace the pre cat o2 sensors. From my understanding, I have the post face lift year so the connections for the pre cat sensors are the squared ones, not the cylinder ones like the post cat sensors and they sit on top of the engine, and not...
  4. E46 General
    I put in new headers and im deleting the post cat 02's. The pre cat o2 sensor for the front header doesnt fit into the front bung. Can I put the sensor in the rear bung instead since it shouldnt matter where they go because I don't have cats. The sensor for the rear header fits fine into the...
  5. E46 General
    Hey guys! So I recently had clogged cats on my e46 325ci, so I swapped them out with headers and put 90 bungs in to kinda space out the o2 sensors from the exhaust stream. However, I’m still getting a check engine light and my car will still go into limp mode. So my question is if anyone on here...
  6. Driveline, Performance, Tuning
    I will be doing a header installation soon on my '99 328i after I get them coated. I have read about the nightmare of o2 sensor fitment and how people have had to re weld the bungs. I am going to get a tune later this summer and it will remove the CEL for having no post cat o2 sensors, so I am...
  7. E46 General
    Hello all, I understand this code is probably talked about a lot on here but maybe not like this? A few years ago I started getting a P0420 code so like any normal person would I stuck an O2 sensor spacer about 3" long onto the downstream sensor. This was working for the past 4 or 5 years no...
  8. E46 General
    Hi, PLEASE HELP!! I have a 2001 330i. About a month and a half ago the car was idling rough, running lean, misfiring, super down on power and appeared to be in limp mode. I found the issue to be a bunch of torn inlet pipes and a faulty MAF sensor. I replaced all of these, scanned with the scan...
  9. UK
    I have a 2004 bmw 320cd with 150k miles on the clock. While pulling away from standstill the car seemed to hesitate / misfire / judder somewhere between roughly 1200-2000rpm. At first i thought it might be a flywheel problem but then noticed it seemed like a strange misfire. If i carefully...
  10. E46 General
    So a couple days ago i changed my pre cat o2 sensors in my 2001 320i as the bank 2 sensor threw a code and I figured id just replace both. However, the next day i went on a little road trip and noticed that throttle response wasnt nearly what it used to be and it just feels more sluggish...
  11. E46 General
    SCROLL PAST FREEZE FRAME DATA FOR QUESTION(S) BELOW ARE ALL DETAILS YOU MAY NEED/WHAT IVE POSTED BEFORE *sorry for making yet another thread i just want to give the most detailed info and try to get the most answers i can and hopefully help others who also have a similar issue and can't find a...
  12. E46 General
    Hey everyone, The other day, I noticed the Service Engine Light turn on on my '05 M3 Vert. It stayed for about a day and then went off, but I'm still a bit worried. I ran diagnostics on my own, after the light went away, (thru Carly BMW), and one of the faults is "00000C, Lambda probe 2 before...
  13. Driveline, Performance, Tuning
    Driving an 05 330i ZHP and wanting to confirm the correct Oxygen sensors and see where everyone has found them for the best price. Car is at 170,000 miles and figured it was time to preventatively replace them. Downstream Bosch 15680 and 15681 Upstream Bosch 17215 and 17216 (I've heard 17215...
  14. E46 General
    I have all monitors set except the Oxygen Sensor Monitor. I was told that if the Catalyst Monitor went ready the O2 Sensors would follow. Somehow the Catalyst Monitor and the O2 Heater Monitor are ready and the O2 Sensor Monitor is not. I have driven the 20 - 30 mph drive cycle on cruise control...
  15. E46 General
    Hi, I have a 2003 325i (M54) that is in need of new O2 sensors or at least that's what our shops computer is telling us. I've been looking around for O2 sensors and I cannot believe how expensive they are! There's a little luck on my side that I am the IT manager of a repair shop and have access...
  16. E46 General
    Hello hello! I've been using information on this forum for about 5 months rebuilding a 2002 325xi but this will be my first time posting. Usually, I'm able to search around enough to find my answer but unfortunately not this time around. I hooked up my bmw computer to the old gal and I'm...
  17. E46 General
    SES lit up, and my Automatic (iOS device) showed P2098. I hooked up Carly to the OBD port and it showed: Engine / Motor MFL-toggle bit Code: 00002D Oxygen-sensor control bank 2 upstrem Code: 0000EC Oxygen-sensor control bank 2 downstrem Code: 0000E2 I replaced both post-cat sensors with...
  18. E46 General
    Have a 1997 328-I convertible and got a fail on smog. The HC ( hydrocarbons) were at 201, where as average was shown to be 17 and max allowed was 100. I had the CEL and checked codes, had a P0170 and I think a P1188. Was finding info on forums of the fuel system intake hoses are often problems...
  19. E46 General
    I have had a fun time the last few days...yes, days...trying to remove a post-cat oxygen sensor that refuses to dismount from its factory hole. The car has 335K on it, so it's no surprise it's rusted to hell, but I am starting to get to that stage where I'm out of options, but I just can't see...
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