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Temperature sensor
Turbo control valve
Camshaft sensor
Crankshaft sensor
Exhaust gas temperature sensor
Tyre pressure sensor (TPMS)
Exhaust pressure sensor
Boost pressure sensor
Idle air control valve
Oil pressure switch
Replace a Spare part Mass air flow sensor – a defective one or if the limit of use has been already reached. Find out useful information about Mass air flow sensor
Malfunctions of air flow meter
part contamination
failures of part operation
mechanical damages to the casing
Signs of air flow meter malfunctions
increased fuel consumption
dashboard light flickers
unstable engine work at idle
indicator “Check Engine” illuminates
decreased engine power
problem with acceleration dynamics occurred
engine won’t start
Causes of air flow meter malfunctions
dirt gets inside the part together with air flow
oil is leaking into sensor through the crankcase ventilation
damage of flow meter wires
power supply fault
hose, which connects sensor with throttle module, is cracked
Diagnostics
Listed malfunction signs can stand not only for breakage of this particular part. It is necessary to have additional diagnostics for spotting the failure.
Turn the sensor off and try driving without it. If you feel that engine started to work better, then the flow meter cannot be used anymore. Have a visual inspection of inner part surface: it must be clean and dry. It concerns corrugated hose as well. Also one of the most common sensor malfunctions is loss or wrinkling of rubber gasket at inlet opening.
It will also help if you connect a known good part. If engine power has increased, then you should replace the regular sensor or clean it. There is one other way, for which you will need a multimeter. Connect gage probes to flow meter signal cables “+” and grounds “-“. Turn on engine without starting powerplant. Voltage of a broken sensor will exceed the value of 1,4 V.
Repair and replacement of air flow meter
A contaminated part can cleaned and washed, but if such proceduress do not bring sensor back to life, you will have to replace it.
Every driver can handle the replacement. It is necessary to do the following:
Shut down engine
Turn sensor socket off
Take off clamp holders and disconnect hose of the blowout pipe from the air filter housing
BMW
MERCEDES-BENZ
VAUXHALL
PEUGEOT
TOYOTA
RENAULT
CITROËN
HONDA
VOLVO
HYUNDAI
