330Ci Power loss
Can anybody help diagnose this problem, a recent service did not help and apparently nothing showed up in the diagnostic - which I was surprised about since I am convinced this is an electronics/sensor problem rather than mechanical.
Hopefully someone who has experienced a similar problem can help since BMW main dealer was unable to.
Car runs fine from cold and keeps running fine until it slows for a while, eg queuing for a roundabout or roadworks, after this it seems to loose all low down power. It is really noticeable in all gears and feels like it has no power/torque from low revs. Thing is, if I stop and switch off ignition then go again it's back to normal full power, this is what makes me think it's something electronic.
It has been getting worse recently with the problem occurring during motorway driving, accelerate in fifth to overtake one minute & everything is fine, next time there is no power and that’s it gone till next restart. And has got to the stage that, when it's warm, even a restart doesn't sort the problem.
Anybody experienced this sort of problem or have any idea what's causing it? Any advice greatly appreciated as this is really starting to put me off the car I loved so much.