[P328ci]

i have a 2001 M3 and its surging between 1500rpms and 5500 rpms im not sure if you can call it a surge because its almost like the car losses fuel every 750 rpms and it causes the car to jerk back and forth when you are accelarating its worse int he mornin if the car is parked out side but comes back throughout the day and then goes away. you cant see a noticable change in rpms when it jerks but you can feel a loss in power and then a jump back in power ive taken it back two time to diffrent dealers and the first reprogrammd the DME and then changed the TPS sensor. does any one have any idea what this could be
thanks
prem

 

[quackman]

are you talking about a "bucking" motion?

My dad's M3 does the same thing, especially when he has it in sport mode. The dealer says it's normal.... So now he just avoids using sport mode.

 

[P328ci]

yeah its kinda like a bucking motion but my dealer said its not normal but its quite harsh it looks like i cant drive a stick its so harsh in the morning. does any one have any ideas

 

[P328ci]

also its the saem in sport mode and in normal