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  1. 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...
  2. BMW 3 Series Forum - Technical Talk on the BMW E46
    Code 3F40, revs fluctuate at idle, occasional failure to start (FIXED) This week my 320d turned over but failed to start on three occasions, each time the engine eventually fired on second attempt, when allowing the engine to turn over for much longer. INPA error memory has code 3F40 'commen...
  3. BMW 3 Series Forum - Technical Talk on the BMW E21
    Also starts instantly when cold but often 4 to 5 secs when hot. Revs will drop to about 200 then jump to 1000, being an automatic, it would try to move forward. Most of the time it will idle smoothly at 700, occurs more regularly before reaching normal temperature.
  4. BMW 3 Series Forum - Technical Talk on the BMW E46
    My 325i had a habit of stalling when cold just as you apply the throttle. I cleaned the ISCV (which was stuck) hoping this would cure it, but it doesn't appear to have made much difference. Can the ISCV fail or is my problem elsewhere ? Car is 2002, with 80k miles on it, recent plugs and...
  5. BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Hi all, M47 320d e91 2007 MSp with 112k.....over last six months or so wasn't happy with urban mpg and smoke when booting. I have an early morning commute and leave home at 7am and get to work at 7.20am so roads are quiet. All are 30mph and only a handful of junctions on the 8 mile route so in...
  6. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Howdy, I know the ol 'lacking power' thread is a classic. I have Googled to death and found lots of answers but just wanted so input to my specific case...thanks :) So, bought a 2005 530d manual pretty cheap knowing it needed a couple of bits as running temp was low and seemed a bit slow. There...
  7. BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Hi all, My 325d has been making an injector knock like noise at low revs between 1000 rpm and 2000rpm at light throttle. Anyway, long story short I pulled the injectors and got them checked. All found to be flowing ok but 2 weren't producing codes and the pre-injection on one wasnt working. So...
  8. BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Hi all, I've been experiencing a long start up crank on my N54 335i, however I'm yet to be convinced it's the high pressure fuel pump. It never happens on fully cold starts, i.e. first thing in the morning. Warm starts are fine too. The time it happens is quite specific and repeatable, which is...
  9. BMW 3 Series Forum - Technical Talk on the BMW E46
    car has developed a weird vibration/judder but only happens occasionally after 30 mins or so at motorway speed, feels like caliper is sticking or almost as bad as flat tyre, pull over, no tyre trouble, all wheels cold so not brakes stuck, drive off, and its fine again. has happened on a couple...
  10. BMW 3 Series Forum - Technical Talk on the BMW E21
    Hi everyone! I am a new member. I own a 1994 E36 318i. Lately I encountered difficulty in gear shift at E mode. The car has 2 other modes namely S and M. Even when I floor the padel the transmission won"t kick down. I need to shift to M to get the transmission back to normal. Wonder anyone got...
  11. BMW 3 Series Forum - Technical Talk on the BMW E46
    Have a slightly unusual problem with my 2004 330d with manual gearbox - have a problem that, when I come off the power and dip the clutch, the revs on the engine drop very quickly and go down to around 600 rpm before bouncing back up to about 700 rpm (normal idle speed). Associated with that...
  12. BMW 3 Series Forum - Technical Talk on the BMW E46
    My first posting,so here goes! Occasionally,with no pattern , I park the car, go to start while still warm and the engine starts,runs for no more than 1 second and stops. If i crank it over it still won`t start. However if I switch off,lock-up,unlock several times it then starts and...
  13. General BMW Discussions
    Hi everyone, my father has a 2006 BMW X3 3.0d which about once a week during a trip starts to pour our thick blue smoke for a few minutes and then stops. It's a well looked after full service history car with 105k miles Please help! Pete
  14. Introductions
    Hi I have a 535d 2005 150k it has dpf and cat cut open and removed it's had a remap the problem I have is blueish smoke occasionally one minute it's driving fine the next it starts it's worse on deceleration and the exhaust note changes seems to run a bit rough I've changed the maf sensor map...
  15. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    i have a 2005 525d e61 and every now and then it starts sounding deeper if that makes sense it also feels like its surging when you put you foot down when the deep sound is there not alot seems to happen then all of a sudden it pulls hard then eases off then pulls again when the car is...
  16. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Hi all I would appreciate a bit of advice about my car, it is a 2001 525i (M54). It runs fine and idles perfectly most of the time but sometimes without warning, it is difficult to pull away from rest smoothly, I noticed when this happens that the idle speed goes up and down by itself, from a...
  17. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi, Guys. Just bought a 2005 E46 330CD, now in the morning it starts and runs fine but when I get a few miles up the road and come to some traffic lights the idle hunts a little bit. It's done this 2 days so far that I can remember. It doesn't shake the car but you can hear the revs going up...
  18. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Hi, I am looking for advice with an occasional problem with my E60 2.0 Turbo Diesel. Over the last few weeks, the car has started to occasionally lose power when accelerating, the car will rev to about 3500 RPM but no more. Easing off the throttle and re-applying seems to clear the problem. I...
  19. BMW 7 Series - Tech Talk For All Gen Of 7 Series
    My car did this today and a similar thing about a week ago. Normally it's fine, then all of a sudden it started running rough; down on power, needed more accelerator and using more fuel. No warning lights or similar. Stopping and turning it off and on didn't seem to help. Turning it off and...
  20. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi to all, I have recently purchased a 2000 W plate 318ci which has done a meesly 185000miles. 1 owner from new and he described it as the "longest and best relationship he has ever had!!:D" Overall iam very pleased with what i have bought and have spent a few quid on it to bring it up to...
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