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  1. Chirp When Stepping on Gas Pedal

    General E46 Forum
    Hey guys, I have an '03 325it and I'm hearing a chirping type sound when I step on the gas. Sounds like the chirp is coming from around the intake/intake manifold but I can't locate it. Only chirps when I first hit the accelerator but constant acceleration will not cause any sound. The first...
  2. 330i Delayed Deceleration?

    General E46 Forum
    Hey everyone, so as the title states, up until just yesterday, car was running fine, no issues. Yesterday I ended up getting an EML light which would also go into limp mode. This seems to have been fixed by removing the idle control valve and cleaning it out, code was P1500. After this, the EML...
  3. Complex Problem - Engine Surge Upper Gears Only

    General E46 Forum
    Hello Everyone, I have a complex problem that I would love help narrowing down. Thank you in advance to any contributors. I don't drive my e46 often and so this problem has been dragging on for some time. I love this car and want to keep enjoying it. Last January I brought the car in to the...
  4. misfire all cylinders, system too lean

    General E46 Forum
    please help .. i was trying to solve this buzzing sound and created a much bigger problem. i cleaned and replaced the ICV (13411744713). but after replacing the ICV, the engine misfires and makes a loud clack sound. see the diagnostic reports and video below. first diagnostic report after...
  5. P0101 CEL Code - MAF working?

    General E46 Forum
    Hello all, long time lurker and first(ish) time poster! I drive a 2005 330xi. So this past Sunday I spent about 2 hours replacing the lower intake boot (massive crack in it) as I was getting some nasty lean conditions. While I was in there I took out the ICV and cleaned it really good with...
  6. E46 M3 | Bad idle control valve?

    General E46 Forum
    So, I've been trying to diagnose a rough idle, and a few other codes being thrown since picking up the car in May. Long story short, I wanted to check the ICV to see if it was stuck / dirty, to see if that was causing the problem. I got the ICV out, and it moved around like it should (give it a...
  7. E46 M3 | Bad idle control valve?

    ///M3 Forum
    So, I've been trying to diagnose a rough idle, and a few other codes being thrown since picking up the car in May. Long story short, I wanted to check the ICV to see if it was stuck / dirty, to see if that was causing the problem. I got the ICV out, and it moved around like it should (give it a...
  8. Rough idle/stalls on cold start, a problem from hell.

    General E46 Forum
    Hey friends, First post! Ive been stalking these forums for years now, and only now did I need to make a thread of my own for a problem. Goes to show how much intelligence there is in this community. Hopefully you guys can help me out. So here goes, this is a bit of a long one, so buckle up. I...
  9. Depressing clutch quickly causes revs to go up?

    General E46 Forum
    When i depress the clutch quickly it causes the revs to go up, and this is most noticeable within the lower gears (1 and 2). This isnt a throttle related problem as i could be coasting in 1st and quickly push the clutch in and the engine will rev without me having ever touched the throttle. Any...
  10. ICV will not come out.

    General E46 Forum
    Hi all. 2001 325Ci, very likely to be the Euro version, not US. I'm trying to do a throttle body and ICV clean, but the car is so old that everything is stuck. The ICV will not come out. I've removed the two Torx bolts and disconnected the electrical clip. Am I forgetting something? In every...
  11. K&N Cone Filter Causing MAF Errors? (M52TUB25)

    General E46 Forum
    Early this summer, I fitted a K&N cone filter directly onto my MAF tube as a replacement for the airbox altogether. It sounded awesome and ran great for a while, but then I installed an electric exhaust cutout and things fell apart. In addition to a blow ignition coil (which I swear must have...
  12. 325ci problems

    General E46 Forum
    hi, i have an 02 325ci, manual. purchased it about a months, has been driving well up until today. As i was driving to school, it suddenly felt like i was driving through quicksand and the gave was giving no power. I pulled over, put the car in neutral and the rpms immediately shot down and...
  13. New MAF, limp mode

    General E46 Forum
    After chasing many issues, all new coolant system, new coils and plugs. Checked vac. Leaks and clean the ICV. There was no doubt the MAF need replaced. After replacing the MAF my 2003 325i ran like a new car, until it goes into limp/safe mode, which was a new issue. It has been throwing a p1500...
  14. Bad TPS?? Help. I'm new and love my car.

    General E46 Forum
    What's up every one, new to the forum but I have been lurking around for a while. You guys have some good threads. I need some help I have a 2000 coupe. It's been give me a problem. The Traction control light and EML light turn on, car goes into limp mode. I have changed out the ICV cleaned the...
  15. New engine wiring harness 2003 330Ci

    DIY: Do It Yourself
    Probably most complex job I have done so far. Couple of months ago car would go into a safe mode, 3 lights etc.. Code 1500 - idle control valve stuck open. Valve cleaned, then replaces, no change. Next step a new wiring harness. After I was done car wouldn't start :ben:, quick scan revealed no...
  16. A few codes...finally

    General E46 Forum
    So my car finally threw rich codes. P1084 fuel control mixture bank 1; P1086 fuel control mixture bank 2 and pending code P1500 ICV stuck open. Some of you may have seen my recent post http://forum.e46fanatics.com/showthread.php?t=1040169 I think we were heading towards a MAF issue, which it...
  17. P0101 related issues (How to diagnose the problem)

    General E46 Forum
    Hello fellas, I have been on the forum for a while and I have learned a lot from you guys. Now, I am helping other BMW owners. Once again, I need your help and I am also here to share my thoughts on the issue. First of all, I have done an extensive research before posting the question(s) so...
  18. DISA & ICV cleanup?

    DIY: Do It Yourself
    Hi all, I'm changing separator & crank case ventilation tubes. DIYs give advice to clean DISA and ICV as they are removed. Have you opened DISA and/or ICV to clean them? They both seem solid packages that won't open easily. I've already cleaned them externally. They both probably have O-ring...
  19. Cleaning IACV via Throttle Body?

    DIY: Do It Yourself
    UPDATE!! 2/23/14 Hello Again! So I cleaned my IACV, I took it out, after a long war with the lower boot's jubilee clip being faced down (the person who designed it like that should die in a fire). My idle was perfect!...for 12ish hours, my check engine light when off and everything was...
  20. ICV, how much slop/play

    General E46 Forum
    I have been having very minor idle problems. I recently cleaned intake system. Upon cleaning ICV I noticed about an 1/8th of its travel was free before the spring engaged. Is this something that could be causing problems. The idle is not that bad at the moment, but it was something that...
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