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1-19 of 25 Results
  1. E46 General
    This is going to be a long one, but I'm going to try and explain my problem as best as I can. To start, I have a 2002 330ci 5MT with an m54 from a 2005 330i (done by the previous owner), 3.64 LSD from a ZHP, and some other minor modifications. I'm unsure if the DME was swapped to MS45.1, but...
  2. E46 General
    I'm trying to resolve some issues with my 2004 325Ci with 192k miles. It has been getting progressively worse, goes into limp mode if I exceed 1/2 throttle and 3k rpm. Maintenance has been neglected on this car for a while, that's how I got it cheap. I've replaced plugs, coils, front O2 sensors...
  3. E46 General
    2004 325ci (M56) automatic Codes: P0171, P0174, P0305, P0306, P0304, P0300, P1449 Symptoms: Rough cold start idle and exhaust chugs like a muscle car at low rpm, rpm flutters in Drive at low rpm or at a stop. Neutral/Park rpm stays at 600-700. Today out of nowhere- I get a super rough cold...
  4. E46 General
    hi I have a 2004 330i zhp and I keep getting a bank 1 system lean code and intermittent misfire code for cylinders 1 and 2. I swapped the coils and they were fine and I have no vacuum leaks. I had a shop do a smoke test. when I started the car (cold) everything runs fine and the injectors all...
  5. E46 General
    is it possible to have a severe lean issue on one bank? i know i have some minor vacuum leaks causing 6% on bank 2 but bank 1 is showing 20+% at times is this even possible or is a sensor dying? my idle barely flutters on a cold start after sitting for days but on normal start and when driving...
  6. E46 General
    I've been trying to source lean codes for awhile now, I've spent plenty of time researching how to analyze fuel trims to see what the problem is. I recently smoke tested the car and could not find any leaks, however I took the intake manifold off, replaced the ccv and all associated gaskets...
  7. E46 General
    Well, looks like the MAF is the likely candidate for my lean codes, what MAFs do you guys recommend (I don't want to buy OEM but I'm prepared to), and is the MAF the same for both the 2.5 and the 3.0? I'm thinking ahead to if I swap it this summer and I don't want to have to buy another MAF then
  8. E46 General
    Hey all! Been a long time lurker, first time poster. Just for background, I drive a 2005 330xi, and I bought it used about 7 months ago - currently has 260k km. So I have a peculiar issue, and maybe some OBD2 expert on fuel trims can help me out. A few months back in the winter I had a lean...
  9. E46 General
    I've not been on this forum much recently, but I picked up a neglected 2001 330Ci with a 5 speed swap and some other goodies (M3 rear end, Konis, headers, etc.) and it's having issues... Anyway, I've been reading a lot on here and it has helped some, but I getting some very bad performance from...
  10. E46 General
    Hi gentlemen, I did a starter replacement job a while back. Have an xi AWD so it was easier for me to get to it from the engine by removing the intake manifold than to go from the bottom due to the diff and other extras down there. I took off the manifold, replaced the starter, while I'm there...
  11. E46 General
    Hey e46 fanatic, I posted the same problem a while back but due to moves and life changes never actual got to posting any updates: back story, while back my '00 BMW 323ci started running lean. Rough startups, intake backfire, boggy acceleration, codes P1188 and P1189 (with a few...
  12. E46 General
    Please delete
  13. E46 General
    Yes, yes I Know.. Another misfire.. I've couldn't really find my exact problem while looking for answers so here it is. 2003 E46 330i 258k km. CODE: P0140 o2 Sensor circuit no activity detected bank 1 sensor 2 CODE: 0171 System too lean bank 1 O2 sensor? MAF Replaced INTAKE BOOTS CHANGED...
  14. E46 General
    My car recently got engine code P2195 with the description O2 Sensor Signal Stuck Lean, I also got two pending codes P2197 and P2195. Bellow I have attached Freeze Frame data and a 5 minute warm idle. What I do see is both bank 1 and bank 2 fuel trims are ~27% which calls for a really lean...
  15. E46 General
    Hi everyone. I'm new to the forums and new to BMW's in general. i've always owned a jeep ever since i started driving, but I have had a variety of vehicles since then as well. Grand Cherokee (ZJ and my current WJ), Cobalt, B6 A4 1.8t Quattro, 2010 Lancer, 4th gen Ram TRX4 and the most recent...
  16. E46 General
    I have an intermittent check engine light with P0174 (Bank 2 system too lean) and P0172 (Bank 1 system too rich). I just replaced the cylinder head, and a lot of the vacuum lines were old so I replaced everything that I saw. The CCV is new. All gaskets were replaced. There is one line, however...
  17. E46 General
    I apologize - I know there's too many of these, but I didn't want to hijack another poster's thread, and the resolution to my issue may take a different direction. I've read every thread I could find here and elsewhere, and have eliminated many of the common diagnoses for my Lean Code...
  18. E46 General
    Hey everyone, I'm new here and in desperate need of help with my 2001 330ci 5 speed. Recently it's been throwing lean codes(both banks), but bank 1 O2 sensor is reading .10v constant while bank 2 is fluctuating like it should. It has misfire on startup on cylinders 1,2,3(bank1). And now is...
  19. DIY: Do It Yourself
    The purpose of this post is to explain my diagnosis of the misfire problem my car developed. So my 2003 330xi threw a misfire code, and began to idle funny. I drove it home, and began to try to diagnose the problem. My code reader pulled a p1347 code. Misfire with fuel cutoff. I cleared the...
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