The air mass sensor measures less air than calculated by the engine control unit (06). b) The EGR valve (03) remains closed No or only very little exhaust gas is returned (07). As a result, more fresh air (05) arrives at the cylinders. The air mass sensor measures more air than calculated by the engine control unit (06). The mass air flow can be tested with a scan tool that displays the live data. The airflow sensor readings at different rpms (e.g. 1000, 2000, 3000) must be compared to the specifications or to the readings of a known good sensor. Read more about testing a mass air flow sensor. A faulty airflow sensor is very common in many cars (e.g. BMW, VW iTrader: ( 0) Erratic MAF sensor reading. Hi everyone, Looking through some live data with my scan tool on my f30 2012 320D and came across flow rate for mass air flow sensor, the car was idling and the MAF sensor reading was going crazy. It goes up and down constantly, anywhere from 1 g/s to 18 g/s, it also jumps from a low number to a high

I just know the engine runs great with it unpluged. davidebby. What a mass air flow sensor does is it measures the amount of air coming into the engine then it tells the car how much fuel to put in so you have the correct air fuel mixture ratio. When you drive it around unplugged the car is playing it safe by dumping in tons of fuel so it does

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E46. E46 General Bad MAF sensor? 3710 Views 19 Replies 6 Bad MAF sensor? 3710 Views 19 Replies 6 Participants Last post by fabreezeo, Apr 8, 2015. B.
The most common signs of bad mass air flow sensor (MAF) in Chevy Tahoe are loss of power or slow acceleration, engine hesitation or jerking during acceleration, erratic idling, misfires, poor exhaust emission values and sometimes black smoke comes out of the tailpipe. The mass air flow sensor is part of the engine’s intake system and is

If the car dies when you disconnect the mass airflow sensor, then that means it was working right and that your computer has issues. It isn’t able to use the tables programmed in it to guess the amount of fuel needed. Also, if the computer isn’t the issue, then it means one of the other sensors is probably off if the car isn’t able to

Mass Airflow (MAF) Circuit High Air Flow and High Voltage Output. The Code P0103 code is often associated with a P0100, P0101, P0102 and P0104 codes which are closely related. What the P0103 code means. P0103 is the code for a problem with the Mass Airflow (MAF) Sensor having a high voltage output to the Engine Control Unit (ECU).
E46 General. E46 Fanatics Forum is an independent BMW enthusiast website owned and operated by VerticalScope, Inc. Content on E46 Fanatics Forum is generated by its users. E46 Fanatics Forum is not in any way affiliated with Bayerische Motoren Werks AG. Hello everyone, I have a 2001 325 Ci and I have replaced the secondary air valve and the
Video tutorial on how to testing and troubleshoot a BMW air flow meter which is the design of an early style mass air flow sensor. This is a Bosch Motronic s

If the MAF doesn't fix it, and there aren't any faults stored for cam sensors or apparent voltage supply issues, I would take a look at the VANOS adjustment unit, especially if you have high miles and/or the symptoms happen mostly when the engine is cold. Good luck! BMW Master Technician and Chevy driver. S.

Had errors show on X3 E83 3FF0 (P3263) Air Mass Flow Sensor 4212 Glow plug cylinder 1 activation 4242 Glow plug cylinder 4 activation 4BC7 Intake Air Temperature sensor 4BA1 Intake Air Temperature sensor I have replaced the Mass air flow sensor for a new unit (BMW Part No 13627788744)
SAP mini MAF code. you should be good if this code is not showing up for the SAP mini MAF.The code number P2430 is properly noted as; Secondary air system mass air flow sensor rationality. This fault is indicating that the Mass Air Flow Sensor (MAF) for the air intake of the secondary air injection system is giving a faulty signal. The MAF
Mass Air Flow Sensor. good electrical types always cap these off but bmw and merc leave many open even E39 (1997 - 2003) E46 (1999 - 2006) E36 (1991 - 1999
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