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surging

  1. BMW 3 Series Forum - Technical Talk on the BMW E46
    ive bought a car blind, and its biting me on the bum! ill cut to the chase. ive put a new intake manifold on as the last was was broke. removed swirl flaps. new fuel filter and put some cleaner in the fuel tank. its popping every now and then which i believe is an injector needing to be...
  2. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    My BMW 530d auto was surging intermittently, usually at about 30 mph at light/moderate load, and about 1500rpm. It was, I think, moving up and down a gear. Sometimes it would judder when under heavier load, low revs. (This seemed like a different fault, but this is gone too) I scoured the...
  3. BMW 5 Series - Tech Talk For All Gen Of 5 Series
    Thought I might have finally cracked it but it would appear not. I've a 56plate pre-LCI 520d that has developed a tendency to surge in power under acceleration. Basically feels like I'm lifting off the accelerator then going back on it ever second or so. Bits I've done so far: DPF gutted EGR...
  4. BMW 7 Series - Tech Talk For All Gen Of 7 Series
    Hello All, Having quite a few problems with my trusty steed at the moment. First noticed the problem when leaving the car for 20 mins at the weekend, it took quite a bit of cranking to finally fire up. After this i noticed the following problems when driving through town: Intermittent surge of...
  5. BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Hi my Bmw 330d m sport e90 has started surging while driving at low speed about 30mph. Any ideas to what it could be?
  6. BMW 3 Series - Tech Talk For All Gen Of 3 Series
    Hey guys, ive had this issue for a while now and its very annoying and costing me lots on parts. the problem is that the engine continuously surges at idle between 1500 - 2000rpm. 2002 bmw e46 318ci n42 114000. ive so far replaced. front 02 sensor maf plugs coils ccv (but not hoses) just...
  7. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hey lads, Just have a recent problem with my 318Ti 2001 that I bought recently, it started with slight juddering when i would be going up through the gears. If i put the foot down it wouldn't accelerate though the gears as it should have. Then one day it completely went dead while driving...
  8. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi all I'm new to the forum and new to BMW's, I have a BMW e46 318ti compact 2001 and I'm guessing from what ive learnt it has the n42 engine?.. It seems like a long read but i tried to diagnose it as best as i could instead of just writing "it don't work" and sending you all on a wild goose...
  9. BMW 3 Series Forum - Technical Talk on the BMW E46
    Finally got the 330d on the road, drives nice apart from needing two wishbones on the front, have a problem though, floor it in 2nd, 3rd, 4th or 5th and it boosts fine upto 2000rpm then it begins to surge, like pshh, pshh, pshh. on/off/on/off - Still pulls up the rev range but obviously not as...
  10. BMW 3 Series Forum - Technical Talk on the BMW E21
    hi guys me again,,help needed,,been out for a drive this morning and noticed when i stopped that the engine seemed to be surging,,up and down slightly on revs,,but then stopped,,but did it again when i got home,,im thinking maybe just bit damp in there or plugs maybe,,because she is due a...
  11. General BMW Discussions
    Hi, My E60 520D recently started surging at cruise speed and it seems to be getting progressively worse (especially when engine is warmed up). The only way to describe the symptoms are that the revs rise and fall quickly and the car surges (jerks) whilst it is doing this. If you accelerate (even...
  12. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi all Picked up a 2001 E46 330D sport saloon manual with 95k a few weeks ago. Very happy with the car and so far have only come across one potential problem. The car pulls very well and in 1st/2nd gear there are no noticeable issues, in 3rd/4th/5th gear if I accelerate hard from low revs the...
  13. BMW 3 Series Forum - Technical Talk on the BMW E21
    Hi all i recently put my car back together after correctly installing my m50 manifold. Now i can certainly assure you there are no vacuum leaks thats for certain. Anyhow from cold engine the car starts but nearly stalls finally picking up idle about 400rpm then i pump the brake whilst still...
  14. BMW 3 Series Forum - Technical Talk on the BMW E46
    I took my car into my usual garage 4 months ago to fix what turned out to be an electrical problem. They couldn't cure it, and as I drove away I experienced a worrying rough revving, and surging idling. At red lights for example, the car revved itself repeatedly up to about 1600 rpm, then...
  15. BMW 5 Series Forum - Technical Talk on the BMW E12
    Hi All My 525 (recent purchase of 2 weeks) under acceleration is surging slightly. You can feel the engine surging, and also the econometer sways 2-3MPG in the process. It doesn't do this when cold, only when warmed up. I'm going to have the fault codes read as has been suggested in other...
  16. BMW 3 Series Forum - Technical Talk on the BMW E46
    I've recently had a remap done on the car and have done about 500 miles since with no problems. However, when driving the car yesterday I noticed on a couple of occasions in 3rd and 4th gear that the rev's appeared to climb and then the rev needle would drop down again say from 3500rpm back...
  17. BMW 3 Series Forum - Technical Talk on the BMW E21
    hi,have noticed a slight problem with surging at a constant speed,but also seems to surge slightly when accelerating,but not sure whether its just me looking for it.it doesnt matter at what speed i do,its just most noticeable at a constant.the rev counter doesnt seem to flutter,which suggests it...
  18. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hey guys, I am hoping you can help with a problem with my early 2001 320d, every now and again the car will start to splutter and surge then at 2800rpm pull like a train but kick out some smoke, I have checked the MAF that is fine and there are no fault codes showing up, it sounds very similar...
  19. BMW 3 Series Forum - Technical Talk on the BMW E21
    Hi guys, long time since ive posted on here as im no longer driving a BMW but wondering if you can help me! A friend of mine has a 316i coupe (1997) and it has a flat spot at around 2800rpm It will accelerate upto that point ok, but then its as if the car is struggling to accelerate. Once it...
  20. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi Guys, OK, From rest my 330d fells like it is suffering from excessive turbo lag, and on a steady acceleration throttle position the engine appears to surge on and off boost over a 3-5 second cycle. Any ideas pls David Smith
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