2008 BMW X3 error 2D06

**koziolek** · 18th December, 2019, 02:33 AM

can someone guide me what can be done to fix that problem
Error 2D06 DME-air mass system
and also errors for cylinder misfires all of them
engine run bad almost no idle
costumer already change all spark plugs and coils nothing change .
smoke test done no leak
new valve cover

**Meat-Head** · 18th December, 2019, 07:49 PM

1) airflow meter bmw you can readjust settings
2) for test, small hole in piece of coarboard to resiret airflow
3) for test, turn airflow meter around
Watch for indians, got arrows

**koziolek** · 18th December, 2019, 08:44 PM

what do you mean by airflow meter bmw you can readjust settings

**Meat-Head** · 18th December, 2019, 08:51 PM

You need somebody who cares, on bmw as airflow meter gets weak you tell ecu
abiut it, it then compensate and is happy

try carboard over airflow first

**doctore** · 18th December, 2019, 08:54 PM

you are legend meat-head

Watch for indians, got arrows

**koziolek** · 28th December, 2019, 04:46 AM

problem still not solved
already done
brand new valve cover
brand new spark plugs and coils
new injectors
tried MAF sensor from good working car
tried vanos solenoid from good working car
oil and filter changed
cylinder compression 12bar (175 psi)on all cylinders
still bad idle
cyl 3 and 4 misfire
and error 2D06 Air mass system
when step on gas it revs ok and sounds ok just shakes on idle

**Meat-Head** · 28th December, 2019, 08:53 PM

I didn’t design it, so not sure, how does it regulate idle speed when a/c kicks in?

sounds to be some kind of ‘blocked pipe’ small thin one on throttle body

can you stall it by stuffing up airflow meter?

**koziolek** · 15th January, 2020, 12:35 AM

when disconnect eccentric shaft position sensor engine runs ok
replace for new sensor same issue when sensor connected no idle hard to start same errors
when sensor disconnected runs ok.
Valvetronic Motor Relearn procedure done few times with IstaD
nothing help.

**Tachodiag** · 15th January, 2020, 07:50 AM

Misfire due to drift of adaptive mixture. Can be lean or rich mixture.
Check fuel pressure pump.
Canister for presence of fuel.
Oxigen sensor in parameters.
Intake for leaks.
The most important perform a cylinder leakage rate(If you know how to do)