MY 2000 BMW 318I SE IS NOT ACCELERATING PROPERLY WHEN STARTING FROM COLD I PUT MY FOOT DOWN BUT THE CAR JUST JUDDERS ALONG IF I STOP AND REV THE ENGINE PAST 5000 IT THEN SEEMS OK AFTER ALSO THE EMISSION LIGHT CAME ON FOR AN HOUR OR SO THEN WENT OFF

Failed Transmission

Time for a Rebuild

starving for fuel need filter.

clean up your fuel system and air filter

idle control valve, remove top intake manifold to get to it. replace icv and two hoses going to it. anything else plastic or rubber that breaks along the way...replace that stuff too. plan on 3 trips. to the auto parts store the bmw dealer and hardware store.

probably a bad air/flow sensor, try to clean it with sensor cleaner, its by the air intake filter box. if not clean the throttle body really good.

pls vote.

Either the fan switch on the engine or the fan relay is at fault. Replace both for they are inexpensive to replace

wet cu
the ecu compartment is under the windshield on the passenger side on E36

you gain acess to it under the hood....
this compartment gets wet, the ecu lays on a flat surface in that
compartment.

the bottom side of the circuit board gets wet and starts corrosion.

remove the ecu, take the bottom plate off, clean the bottom of the circuit
board with alcohol and a soft tooth brush.

you should be able to see the signs of corrosion or conductive build up.

this gunk bridges solder points doing all sort s of wierd things to your
car, including false sensor readings from asc/abs controllers and other
sensors....

all the way to engine failure and worst case burnt and shorted wiring
harness.

I'm on my 3rd ecu, took me and the repair boys a few years to figure this
one out.

BTW: i would get that ecu mounted above that flat surface, use some sort
of standoff to raise it so that it is not laying in the wet.

Hello there

If you drive an automatic and it starts to judder at low speeds than that means you transmission isn't down shifting as the speed is reduced. In the first instance you should get your transmission oil changed.

Hope this helps and please don't forget to rate me.

BMW 530d SE initially wouldn't start when hot now wont start at all.

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