When to replace a mass airflow sensor?
A trained technician will have to look at fuel trim status with the use of a scan tool to verify this. A MAF sensor that behaves like this will require replacement. Before replacing the sensor, however, the rest of the circuit should be checked for proper operation. If the circuit has an issue, replacing the sensor will not solve your problem. 3.
How is air flow measured on a Nissan D21?
And this measurement of the air flow is sent to the D21’s fuel injection computer as an analog DC voltage signal.
What causes rough idle after replacing mass air flow sensor?
Replaced air filter and maf sensor. Problems with vehicle turning off seemed to go away but now I have a rough Idle. Car will drop below 1000 rpms and then rev back up to over 1500 like it wants to shut off. Idle problems seem to go away when maf sensor is disconnected. Car throwing codes p0171 and p0102.
What are the symptoms of a bad air flow sensor?
The most common symptoms from a bad mass air flow sensor are slow accelerating and reduced engine power. You can also notice a difference in the fuel economy as the main function of the mass air flow sensor is to let the engine know how much fuel it should inject.
How to clean the Nissan mass air flow sensor?
Spray 8 to 12 spurts of MAF sensor cleaner on the exposed plate. Allow the MAF sensor to dry and reinstall. Nissan’s mass airflow sensor sends a voltage to the powertrain control module (PCM). The hot wire sensors typically have an operating range of 0 – 5 volts. At idle, the voltage under 1 volt.
Replaced air filter and maf sensor. Problems with vehicle turning off seemed to go away but now I have a rough Idle. Car will drop below 1000 rpms and then rev back up to over 1500 like it wants to shut off. Idle problems seem to go away when maf sensor is disconnected. Car throwing codes p0171 and p0102.
Why is my air flow sensor not working?
It is possible that there is a problem with a BARO (barometric pressure) sensor that is reading faulty. Its purpose is to measure atmospheric pressure, the amount of air entering the engine, and supply the ECM with a calculated reading that allows the engine to make corrections accordingly.
Can you perform idle air volume learning on Nissan?
Normally, the idle learning can be completed if operate per the above-mentioned steps. While, it can’t be completed sometimes mainly due to the water temperature which exceeds 90 ℃. For Nissan Idle learning, it has strict requirements on water temperature, i.e. it should not exceed 90 ℃, otherwise the idle learning can’t be co mpleted.