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  1. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi all! Help me please! My N42B18 fault codes: HO2S heater control circuit (Bank 2 Sensor 2) & O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) this location on 13? I pulled out a 13 oxygen sensor and it looks like this
  2. BMW 3 Series Forum - Technical Talk on the BMW E46
    I have been working on a cooling problem on my E46 316i rust-bucket. I couldn't find a diagram that showed the basics of system flow so I did my own. I thought it might be useful to put it up here. There are other complexities to this system and maybe others would like to add details of...
  3. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hey everyone, I live in a Scandinavian country, wherefore a repair conducted by an authorized BMW dealership would cost around ( $ 3.000 / € 2.700 / £ 2.200) Therefore, the option of handing the car over to a professional BMW mechanic is definitely not on the table, given that the current...
  4. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hello! Hope you are having a great Saturday! I have got in a bit of problem or a path that I am not familiar with. When I rotate the engine by hand i hear a bell sound from engine (check video). It is not like it is hitting something but rather that it is releasing something because I rotate...
  5. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi all, My 318i Touring (N42 engine) is generally running fine, also showing no fault codes. However occasionally it does belch out a big cloud of black smoke, then continuing as if nothing happened. It seems to occur mostly when moving off after having been stuck in traffic, idling for a while...
  6. BMW 3 Series Forum - Technical Talk on the BMW E46
    I replaced the starter the other day and now the car starts fine, idle is ok for a few seconds and then it starts going up and down as if it's about to die. When it starts this mood swings, a yellow warning indicator in the middle flashes. The EML light is constantly on, but only the text one...
  7. BMW 3 Series Forum - Technical Talk on the BMW E46
    I'd be interested to know what everyone's thoughts are! Cheers.
  8. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hello everybody, i need some advice about replacing the vacuum pump, I noticed a leak coming from the back of the engine, i have read about the o-ring failing in the vacuum pump so i bought new ones. This morning, i've remove the vacuum pump but the vacuum pump has got a little surprise for...
  9. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hey all, I need to swap out the RCG / VCG on the N42. I done this a few years back on a friends N42 also but was wondering you guys could clear up a few things; 1. Main question being regarding the use of gasket sealant. Right now the existing gasket has some on due to when the ring and seals...
  10. General BMW Discussions
    I have a BMW e46 316i with the horrible n42 engine. A while ago the engine died while driving, but started right back up when I pulled over. This happened again today, this time the engine didnt start back up, just cranked. I tried starting it again after 30 minutes and it started right up, but...
  11. BMW 3 Series Forum - Technical Talk on the BMW E46
    Do you get the noise more when raising the revs slightly (1000 - 1200) ? Have you been told the chain is slapping on the chain guide ? Have you thought that you have a problem with the hydraulic valve lifters ? Maybe you've even been told the noise comes from the vanos solenoids ? The...
  12. BMW 3 Series Forum - Technical Talk on the BMW E46
    Any recommendation/suggestion for the auto gearbox oil?
  13. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hello all, I have e46 318i N42 105kw Today BMW diagnostic tool showed bad o2 sensors on bank2. I opened real oem page and I got confused. I can see 3 pcs of catalyc converters and 5 o2 sensors? Could someone show me numbers for bank2 sensors I need to replace?? https://ibb.co/SdLfSKy Thank you
  14. BMW 3 Series Forum - Technical Talk on the BMW E46
    So this is starting to really bug me now lol When i start it up it shakes and splutters and then will sort its self out I have changed both cam sensors and timing solenoids and no real improvement Anyone got any ideas??
  15. BMW 3 Series Forum - Technical Talk on the BMW E46
    It's more of a generic question than E46-specific Since I'm now on 1lt oil every 400 miles I checked the plugs and they are all like this one: If the oil was seeping through valve seals or piston rings, shouldn't the plugs be oily?
  16. BMW 3 Series Forum - Technical Talk on the BMW E46
    edit: found the little bugger not engine bay but in engine So I did the usual moronic thing while trying to change out the valve cover gasket. there are the 4 holes exposed at this point at go to the sump I think. will it cause any damage if I leave it alone till I open the sump? only issue is...
  17. BMW 3 Series Forum - Technical Talk on the BMW E46
    Has anybody with the N42/N46 engine had theirs done at PMP Cars and can comment on their work, please?
  18. BMW 3 Series Forum - Technical Talk on the BMW E46
    Okay so i decided after finding out my timing guide had snapped at the top i would change the timing chain, got all locking tools and proceeded to change everything got the car to tdc locked the cams in what i am assuming is the right way everything went smoothly. Miss read tis and only...
  19. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hey guys! I'm going to show you a clip of the problem. First 30 sec is the chainrattle, after 30 sec the vanos kicks in i Believe and makes a loud knocking sound. Sounds like a diesel :) , What's your thoughts on this one. https://www.youtube.com/watch?v=DFEcHRkGtUY Never mind the...
  20. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi knowledgeable peeps.... On the rear of the CH is a black plastic cover plate, I know it seals part of the cooling system, but there are two seals....is one the cooling channel and the other an oil gallery, or are they both part of the cooling system? I ask as I am getting oil in the coolant...
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