Product Description

MASS AIR FLOW SENSOR METER 5WK9642Z BMW  2.5L 3.0L V6 330Ci 330i Z4 X3 NEW
 
Brand New BWM Mass Air Flow Sensor

MAF SENSOR with housing, NEW
SIEMENS / VDO REF. # 5WK9642 / 5WK9642Z
BMW REF. # 13627566983 / 7566983
BMW REF. # 13627513956 / 7513956

how to install:

• Unplug the battery for at least 30 minutes prior to install
• Remove the old mass air flow sensor and verify the number matches one of the reference numbers provided above
• Install the new mass air flow sensor

Symptoms of maf sensor nt working
Check Engine Light

• The most reliable early symptom of a failing or failed MAF is the illumination of the check engine light on the instrument panel. Many types of problems may cause this light to come on, so you must have your car's computer analyzed to see if the light is related to the mass airflow sensor.

Computer Analysis

• An auto mechanic can analyze a car's computer for a fee, or you can do it yourself using a digital auto diagnostics scanner. These scanners are available at most auto parts stores, and though they all work a little differently, they're generally designed to be plugged into the car's circuit box so that they can read the computer data. After the scan, the scanner will display one or more numeric codes, which must be looked up in a reference book that accompanies the scanner. If you do this and the scanner codes refer to a malfunctioning MAF, you will need to have the MAF inspected and likely replaced. Mass air flow sensors are rarely repaired, as it is usually more cost-effective to replace them.

Performance

• Since the MAF is instrumental in maintaining proper balance of air and fuel inside the engine, MAF failure can cause a wide range of engine performance problems. These may include
• low gas mileage
• shuddering
• stalling
• knocking
• pinging.
• Other common automobile problems may also cause these symptoms, so they don't specifically indicate MAF failure. These symptoms can appear, however, before the MAF fails to the extent that it will register the check-engine-soon light.

Particle Buildup

• Sometimes the MAF will begin malfunctioning because it is dirty. Although the air that passes through the MAF is filtered, microscopic particles will still get through and accumulate on the sensor. Most of the time, this buildup won't be significant enough to affect the MAF, but severe buildup can cause interference.


Fits the following ,please see picture also

Year	Make	Model	Details
2003	BMW	325	Ci or I Models with M56 Engine ID
2004-2005	BMW	325	I Models with M56 Engine ID
2002	BMW	330	Xi Series
2002	BMW	330	i Series - From Production Date 9/02 [
2003	BMW	330	Ci Series - From Production Date
2003-2005	BMW	330	i Series
2004-2005	BMW	330	Ci Series
2004-2006	BMW	X3	3.0L Engine
2003	BMW	Z4	3.0L Models