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lean
1-19 of 21 Results
  1. 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...
  2. 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...
  3. 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
  4. 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...
  5. 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...
  6. 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...
  7. 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...
  8. E46 General
    Please delete
  9. 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...
  10. 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...
  11. 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...
  12. 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...
  13. 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...
  14. 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...
  15. 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...
  16. E46 General
    OK folks hope you can help me with my problem on my 14 year old 330ci with 122k miles on the clock. I've been getting the check engine light with P0171 and P0174 codes, over the last 20-30k miles, with it gradually coming on more frequently. Initially the light only came on in winter and on a...
  17. E46 General
    Hi, the other day took my car to the car wash, when going into the tunel the car stalled and shut down - i tried several times to turn it on again but when it turned on it began misfiring with rev's going up and down between 500 and 1000 repeatedly, then the asc (traction control) light popped...
  18. E46 General
    I need help from you e46 experts, especially those with INPA experience. Unfortunately ideas from the e90 forums are not flowing in as I had hoped. Whenever I search for INPA and lean it directs me to threads here. The Story: Cliffs Notes --> Car runs lean and I don't know why and can't...
  19. E46 General
    My 2001 325xi just put on its 190 thousandth mile the other day, and it's still going- but less than strong lately. I know for a fact that the bank 2 sensor 2 oxygen sensor is out, that trouble code has been present for a little while. I'm planning to replace it next Saturday. I don't think it...
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