Mass Airflow Sensor Operation The Mass Airflow (MAF) sensor directly measures the mass of air being drawn into the engine. The sensor output is used to calculate injector pulse width. The (MAF) sensor is what is referred to as a "hot-wire sensor". The sensor uses a thin platinum wire filament, wound on a ceramic bobbin and coated with glass, that is heated to 200*C (417*F) above the ambient air temperature and subjected to the intake airflow stream. A "cold-wire" is used inside the (MAF) sensor to determine the ambient air temperature. Battery voltage from the EEC power relay, and a reference signal and a ground signal from the PCM are supplies to the (MAF) sensor. The sensor returns a signal proportionate to the current flow required to keep the "hot-wire" at the required temperature. The increased airflow across the "hot-wire" acts as a cooling fan, lowering the resistance and requiring more current to maintain the temperature of the wire. The increased current is measured by the voltage in the circuit, as current increases, voltage increases. As the airflow increases the signal return voltage of a normally operating (MAF) sensor will increase. Testing 1. Using a multimeter, check for voltage by back probing the (MAF) sensor connector. 2. With the key ON, and the engine OFF, verify that there is at least 10.5 volts between the VPWR and GND terminals of the (MAF) sensor connector. If voltage is not within specification, check power and ground circuits and repair as necessary. 3. With the key ON, and the engine ON, verify that there is at least 4.5 volts between the SIG and GND terminals of the (MAF) sensor connector. If voltage is not within specification, check power and ground circuits and repair as necessary. 4. With the key ON, and the engine ON, check voltage between GND and SIG RTN terminals. Voltage should be approximately 0.34-1.96 volts. If voltage is not within specification, the sensor may be faulty. Removal & Installation (4.6L & 5.4L) 1. Disconnect the negative battery cable. 2. Release the air cleaner clamp and separate the air cleaner halves. 3. Remove the grommet from the air cleaner housing and slide the grommet down the hardness. 4. Remove the (MAF) sensor plate and (MAF) sensor from the air cleaner. 5. Detach the (MAF) sensor from the harness. 6. Remove the retaining nuts and remove the (MAF) sensor. 7. Installation is the reverse of removal.
That truck does not have a maf sensor.
Mass Airflow Sensor
it included in MAF sensor
The MAF sensor is just behind the air filter on your air intake
No it is not.
Yes it would
Trouble code P0102 means: MAF Sensor Circuit Low Frequency Try replacing the MAF sensor
with the maf sensor
The truck was still throttle body injection in 1995. They didn't use a MAF sensor.
Ait sensor is part of the maf sensor!
The IAT sensor is an integral part of the MAF sensor
The MAF is attached to the intake hose where it connects to the air box.