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1-19 of 41 Results
  1. E46 General
    Could someone help me read this o2 sensor readings? My cat codes have been pending for a few weeks now, driven it over 500+ miles. Do I need to keep driving it to make the monitors ready? Previous seller noted that the cats were replaced, but not sure or part number or OEM. No check engine...
  2. E46 General
    I’ve look on the forums and never got a definite answer for p0160 code and was wondering if it was a pre cat or post cat sensor.
  3. Europe
    hello, I would appreciate any suggestions. Bought my first e46 month ago. Week ago I have replaced the cat plus upstream and downstream o2s cuz the car was straight piped. After a day or two after replacing these parts cel popped up with this code. Checked both o2s via obd scanner. They are...
  4. E46 General
    So upon installing the headers I can see that the post cat sensors will not be able to fit with the way the ports are on the new headers, should I just plug them and leave the pre-O2? What would this do? Would the car still run fine?
  5. E46 General
    Hello all, I ran into a huge problem today and can not drive my only car anymore. I started the car today and actually felt and heard the misfiring once I put the car into drive. The car then shut off after moving a bit and I was able to start it up and move it back, still misfiring. Scan and I...
  6. Driveline, Performance, Tuning
    hey guys can someone tell me where I can get my ms45.1 tuned, I recently installed headers on my 330ci 2005 and its got the ms45.1 DME, I did not installed the post cat o2 sensors which is making the car run rich and makes the car throw black smoke out of the exaust, and I have seen that the...
  7. E46 General
    Hello, this is my first post on a forum ever… I’ve slowly been working on maintenance for my E46 and I still have some codes/issues to take care of. I have a little knowledge on some of these but I thought it would be better to ask someone more experienced for advice. For codes 202, 203, 227...
  8. E46 General
    So my O2 sensor wires were hanging loose for a while and I was meaning to get around to fixing it and putting heat shielding on it. I really shouldn't have let it go that long, and now the connectors are ruined. I need to do inspection by the end of next month 😅 What's the best way to fix it...
  9. E46 General
    Any ideas why I would be getting this error with brand new o2 sensors? I replaced all 4 earlier today.
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. 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...
  17. 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...
  18. 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...
  19. 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...
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