Hi there,

I have a vibration/missfire/????? at between 2150rpm to 2800 rpm depending on whether or not the eng is cold, how many tiumes i have started it ???? yes i know sounds . But from one eng run to the next i have very different "power" levels and the vibration shifs ever so little. Sometimes the eng feels dead as a door nail, others a little more lively.

I have changed the coils, had the vehicle serviced, had a vanos kit installed (BMW bulletin) to make the vanos less noisy (this also seemed to give a better spread to the torque not just a terrible sling shot effect from around 4800rpm,) and G-D knows what else.

I have had the eng on DIS to see if any faults are stored, nothing!

I am at my witts end. This damn vibration never lets up and i am sure its the cause of the lack in power in the eng. (Mabe i do need an M5 as recogmended by my mechanic.... LOL)

He suggested last night that mabe the Crank sensor is faulty and that at that rpm it is experiencing a vibration or it is not sending the correct signal just then, mabe even the cam sensor or both ???

Any ideas ????

Thanx


'94 525im (euro Spec)