#MASS AIR FLOW SENSOR CLEANER HOW TO#
#MASS AIR FLOW SENSOR CLEANER MANUAL#

Newer vehicles today use a high-frequency MAF sensor. If the engine starts or the idling gets better, then your MAF sensor needs replacing asap.ĭigital Multimeter Testing the Mass Air Flow sensor Using a DMM.Unplug the connectors from the MAF sensor.Open the hood and put your car into Neutral or Park.If the engine stalls or idle gets worse or better, then the MAF sensor is likely defective.

Give the MAF sensor and its electrical wiring a few gentle taps with a wrench or a screwdriver handle.While the engine is idle, engage the brakes and put your car into Neutral or Park.

#MASS AIR FLOW SENSOR CLEANER MANUAL#

Be sure, though, to consult your car’s manual to confirm the type of MAF sensor you have, as it may require a different type of DMM.īut before you try out any DMM to do MAF sensor testing, you can do these simple troubleshooting if you encounter any MAF sensor trouble symptoms. If you’re sensing something wrong with your MAF sensor, you can employ a basic digital multimeter (DMM) to test your sensor. You can also detect MAF trouble codes via this device.Īnother reason to get a handy scan tool? Once finished cleaning your MAF sensor, and you’ve repaired any problem in your car, you can clear the engine light and reset limp mode with this tool as well. Display this measure via your mobile device or head unit, so you can monitor your air flow while on the road. The cold wire ones use “cold wires” together with hot wires to create the air flow readings to be fed to the ECU.Īir flow rate can also be tracked via an OBD2 basic diagnostic tool. The readings here are sent to the car’s powertrain control module, which controls the fuel injection system of the vehicle. When air enters the intake and passes through the sensor, the wire cools down a bit and this sends a signal to the computer to increase the voltage to heat up the wire again to its constant temperature of about 200-degrees Fahrenheit or 93-degrees Celsius. Hotwire MAF sensors function by using a constantly heated platinum wire in the middle of the device. More common is the former, while the latter is used mainly on GM vehicles. There are two types of MAF sensors: the hot wire and the cold wire type. On the other hand, excess amount of air leads to rough idling, engine misfires, and car start failures. Too much fuel, and affects fuel economy and leaves particles that mire the spark plugs. You see, to maintain the optimal performance of an EFI engine, the internal computer of the vehicle computes the right mix of air and fuel inside the combustion chamber. Found between the air intake and the intake manifold, this device measures the amount of air entering the engine (or air flow).

Part of an electronic fuel injection(EFI) engine is a mass air flow, or MAF, sensor.

#MASS AIR FLOW SENSOR CLEANER HOW TO#

Today, we’ll discuss how important it is to keep the MAF sensor in tip-top shape and how to check if something is wrong with it. And sometimes, the MAF sensor can fail and cause your check engine light to come on or your engine to run like rubbish. This is an important component of how our vehicle’s engine functions. Do you know the engine part in the image above? It’s called Mass Air Flow (MAF) sensor.

Mass air flow sensor cleaner