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1-13 of 13 Results
  1. E46 General
    I'm at a complete loss, I've read around on multiple forums and have not found an similar issue. I have a very high fuel trim problem. When I start the car (cold or warm start) I sit at a 0% STFT until about 30 seconds, then it slowly creeps up to 27.3% at idle. When driving, they really go all...
  2. E46 General
    I promised to document my oxygen sensor behavior so here you go. About three months ago or so i changed my precatalytic oxygen sensors (140k on them). It was followed by VCG change and oil change. After oil change my BCG started leaking oil right on top of oxygen sensor 1 bank 2. O figured it...
  3. E46 General
    Hey guys, need your help with diagnosing strange o2 sensor / fuel trim data. I've had the car extensively repaired, a lot of parts have been changed: CCV valve cover gasket throttle body replaced, ICV cleaned all the usual plastic and rubber parts, gaskets, o-rings, and plugs on the intake...
  4. E46 General
    Any ideas why I would be getting this error with brand new o2 sensors? I replaced all 4 earlier today.
  5. E46 General
    Hi everyone, so these are the codes currently showing on my reader. Back in April this year I add these codes along with a P0170 and P0171. There was a very obvious misfire that you could feel and hear as well as a knocking sound coming from under the hood. In an effort to fix these codes I...
  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 XI
    2003 330xi - E1 - Aftercat fuel trim system Cyl #1-3 (Bank 1, Post Cat) | P 2096 Hi everyone. I'm currently getting this elusive code. I've done the intake books and O2 sensors post cat. DISA valve was redone with the aluminum kit. I have on order the fluorosilicone ring for the DISA valve. I...
  8. E46 General
    Hello! I recently did a swap from b25 to b30. But since the first start the car have been running rough... in idle you can feel the multiple misfire and the fuel trims are super lean and rich, bank1 28% and bank2 -28%... and the long term fuel trim does not register anything :loco: This will...
  9. E46 General
    Hi guys, I've had the sound of a vacuum leak under my bay for awhile now and have just gotten around to investigating it. It was not running lean enough to throw a code so that is why I delayed. Running through some fuel trim data, I have a few questions that may or may not pertain to the...
  10. DIY Guides
    Hello, appreciate if you could comment on these INPA readings, if they are ok or is there any possible fuel trim fault that can be fixed. Thanks!
  11. E46 General
    misfires in cylinders 5,6,and 4. Just had all four O2 sensors replaced with bosch. Ill try a smoke test soon after that I've read that it might be the MAF. Is their anything else I can try or check on my iCarsoft scanner? thanks!
  12. E46 General
    I have recently been having problems with my 2003 330ci. It seemed to be a transmission issue, as the car seemed to be slipping between shifts, but I took it to a transmission shop, and they told me that the transmission was fine. The car has been shooting codes for a while now, and they all...
  13. E46 General
    Hey guys, I've been chasing a fuel trim issue for quite some time and need some expert help. I'm including a lot of data, so hopefully it will accelerate and narrow the areas of investigation. The facts: 1999 E36 M3(not an e46, but the same basic rules apply), 96k miles, Supercharged via AA...
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