what are the possible suggestions that would cause surging and a large power loss...The engine code says fuel trim malfunction twice...
I have replace the O2 sensors..Throttle body gaskets...Intake manifold gaskets..Spark plugs....
I have checked the resistance for all six coil packs and they are all within specs....
would a weak fuel pump or a bad mass air flow sensor..... fuel pump was on the bottom side of the fuel pressure range but it is still within specs... did a pin-out for the mass air flow sensor and all checks and i also tested the film wire and it was good...all the test in the service manual...
Problems: Poor accelation.....surging during cruising speed, never had a problem with cranking or cutting off.....gasing to full throttle stops the surging issue but...still has a large lack of power......
keywords: bmw 325i, new bmw, bmw lineup