Hi All,

I've had my 2006 525 manual diesel for 3 weeks now and have noticed at certain revs, say 1400 and 1600 that if you accelerate slowly through these revs (for example while driving in traffic) the car seems to temporarily jerk at these points. Its most noticeable when in 1st gear and driving on flat ground. If you accelerate quickly then its not noticeable.

Any ideas on what this is or whether I need to worry about it? Its a niggle at this stage but I would really like it to be fixed as I spend about 50% of my commute to work in slow moving traffic.

Thoughts or suggestions please whilst its still within the 30 days BMW guarantee?

Thanks,

Steve

 

I suggest you switch jobs and find a place to work, where you won't have to travel to and from work in slow traffic


BTW to the "club"

Seriously speaking, I have a petrol 530 manual and it jerks a little here and there at times - its just the torque band of each engine is different. I'm guessing that in your 525's engine torque delivery there are a couple of point where torque "spikes", causing these jerky reactions - at least that's what I attribute my jerkiness too. Unless it happens during clutch engagement - then its most likely you not holding the clutch down long enough, releasing the pedal too abruptly. Since you do have the guarantee from BMW, I would suggest taking the car in to have it checked out based on this jerkiness - it sounds like a valid enough reason and if anything is wrong - even if they don't find it now, you'll have proof that you complained about it right away, so if it ends up turning into a problem down the road, you'll have grounds to force them to fix everything under good will.

 

Thanks for your comments:- I certainly will do that!

 

man... gotta hate the niggles...

 

Let's do this before FP gets here:



RACIST!!!!!!!

So what you got against niggles, huh, huh!?!!?!?!?!?

 

hahaha

 

could that jerkiness you feel, be the intake flaps moving position, or maybe the turbo increasing boost?

 

I don't know, so I'd ask the same question to any guys in the know

It also feels like the throttle doesn't actually do anything until its travelled a good few millimetres, maybe a centimetre or two. Is this normal?

Thanks,

Steve

 

Yes, actually it is, we have drive by wire systems and they all have a lag - which is why a lot of members are installing these:

https://5series.net/forums/index.php...opic=83923&hl=

 

I actually did a double take and had to look up the word "niggle.' Is it commonly used in Britain? I may use that word more often, now that I know its meaning. I might start by asking my boss what one needs to do to niggle as effectively as he does.

I like the sound of it, though: niggle, niggle, niggle.