Bmw auto as no power wen you acclertart - 1998 BMW 318i Automatic

He must have sparked something from not disconnecting the battery during the repair. Check all your fuses

Check your vacuum lines. May have a lean misfire.

would need head under bonnet to be sure but i suspect a water pump impeller is loose on the drive shaft they are a plasric impeller on a metal shaft and from your description it soulnds like this is the case

You mused in I-Drive set RPA/RDC and reset it

Possible clogged fuel filter, faulty ignition system (ie. plugs and wires) faulty injectors. Start with the fuel filter. Good Luck

sounds like an abs control problem if i am understanding you correctly

get it diagnosed correctly before you end up buring up the catalytic converters.

When the DSC Dynamic Stability Control light is ON your traction control is OFF. It will sometimes trigger the ABS light and the Rev Limiter it is an engine protection FAIL SAFE mode.
Check your brake switch on the brake pedal, this sounds like the problem wen replaced it will reset the Rev limiter, if the ABS light comes Check the wheel sensors

it is your idle control valve , when you start your car the humm should go away , if the car dies on staring and the humming stays there all the time it is faulty

try disconnecting the air mass meter sensor if it runs better then ur air mass meter has failed had the same problem