Possible electrical issue with E46 325Ti

[325Ti]

Hi all,
long time reader - but only just joined

hoping for some advice on my 2002 E46 325Ti Sport

about 50% of times when the car is started it seems to struggle on idle and when driven is down on poor and doesnt accelerate the way it should - cutting out in traffic some times

However once warmed up, if the engine is turned on and off again it seems to run perfectly and accelerates and sounds as a straight 6 should

been to the mechanic a few times but he cant find anything major wrong with it - except possible brittle Valve stem o rings - but these are treated by adding a solution to the oil which has seen the consumption return to normal

any other suggestions?

cheers

[simplyme80]

Has he checked the MAF? I have the 320td and had the same issue. Just replaced it and it is like a new car.

[325Ti]

Not sure, I'll ask him. Thanks for the advice.
Out of interest how much did it cost?

[simplyme80]

Depends on where you go, my best friend is a trader so he got me one at cost.
I would presume they are around £70ish

[tgr]

sounds like a sensor of some sort, cam position sensor or crankshaft possibly. a diagnostic should confirm/pinpoint. If diagnostic all clear possibly a split hose which opens and closes depending on the temperature of the engine?