Symptoms: seems like the engine is missing occasionally on cold start, when in gear, seems to loose power in high torque starting situations like a hard turn from a stop or taking off from stop.

New development. When I filled up the tank, the issue seemed to go away.
Could be
Less ethanol in my latest fill up?
or
Fuel pressure issue caused by fuel pump, which is 35k old.
or
I have had an issue with the fuel level sensor - it stopped working after a refill a few months ago, worked a few days later, I supposed it was near empty for too long and got stuck / old.

Could be totally not related though

Recent repairs.
I replaced transfer case and shaft, new Giubos front and back, new bolts and nuts, new Transfer case fluid.

Next step
Bought a new fuel level sending unit (drivers side) and perhaps the existing one connection is bad or worn after 261k or the sending unit is not picking up or partially clogged when low fuel?


Bought new coils and plugs to be installed

Could be bad Transfer case but it was rebuilt from a reputable place and the 1 inch longer shaft would not slip when both shaft and TC are new.

__________________
Kevin
2001 X5 3.0i
Phoenix, AZ