bmw 320 d of the 2004 mass air flow sensor again the same error

[sebastiano345]

hi all,I have a bmw in the workshop of the 2004 engine type 204d4 150 hp that sometimes the light comes on and the diagnosis of mi by air mass sensor,aiche change the sensor,after various checks,type egr, sleeves,butterfly collectors,pressure sensor,turbine, variable geometry,and catalyst,but nothing after a while siriaccende ,even after 2 or 3 days.air mass sensor value too high,in fact, if I look at the real parameters of the nominal value (what you would expect in the control unit)to a minimum and' 225mg while the actual measured from the sensor, and' da450 a480... hello in the meantime, and thanks in advance if you'll give me any straight

sorry I state that mounts a edc16 so no updates or coding to change mass air flow sensor,hi

[munro]

you have the egr closed on this car??

[sebastiano345]

I closed after you have changed the mass air flow sensor to the test ,I saw what was going on I still have it closed with a sheet round inserted on the tube of the valve, but if you noticed, I also gave error recirculation then I removed it.the egr is clean and functional,the block egr I did that with time,do you have any idea?

[ugoboss]

on these cars, there have been problems of sealing valves, and among the many errors and gave also to meter the air.

[sebastiano345]

you say that it could be a mechanical problem then?I try to do a compression test in the morning,for safety,thanks in the meantime. however, the car has only 157000 km, and the customer has kept well,aside from the oil change every 30000 km,which I am not so agree,but....when I removed the intake manifolds I found them "clean"compared to many other cars

[blackwolf76]

IF you are first blocked the egr with a time, and then you had the error, I would say to put gold and try... maybe the soft did not do well what he had to.

[faberecu]

regulates air flow from the map , practically lower the sensitivity? maf until the air mass, which corresponds to the measured mass, however, I think l egr ? closed
post the map if you want

[faberecu]

then I remember that ? can reset the learning maf
test

[sebastiano345]

the egr I closed after it was turned back on after the replacement mass air flow sensor,and reset, I already tried after all the tests I did,the parameters of the maf I can see them with the ecm or do I have to seek you out drivers?I fear that loss of power even if the problem is more low rpm,when it arrives to 2000 data correspond almost completely,I placed the files

[carlo abarth]

when I'm defect notice white smoke in the exhaust???( I do not mean to fap)