How do I know if my Mass Air Flow Sensor is bad?
Symptoms of a Faulty Mass Air Flow Sensor
- The engine is very hard to start or turn over.
- The engine stalls shortly after starting.
- The engine hesitates or drags while under load or idle.
- Hesitation and jerking during acceleration.
- The engine hiccups.
- Excessively rich or lean idling.
How do I reset my Mass Air Flow Sensor?
Check if the engine light is still on after the Mass Air Flow Sensor was replaced. The entire system can be reset by unhooking the battery and leaving it unhooked for 10 minutes. Keeping the battery unhooked for longer than 10 minutes won’t hurt anything.
Why do MAF sensors fail?
Contamination is a key reason why MAF sensors fail and require replacement. As air, dirt and other debris get into the sensor, the parts become contaminated and fail. Drivers often notice sluggish performance, rough idling, poor acceleration or even stalling.
When to replace the mass air flow sensor on a Volvo?
If your check engine light is on and your Volvo is experiencing some trouble running, it may be time for a new Mass Air Flow Sensor.
Why do you need a mass flow sensor?
A mass (air) flow sensor (MAF) is used to find out the mass flowrate of air entering a fuel-injected internal combustion engine. The air mass information is necessary for the engine control unit (ECU) to balance and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure.
How does the MAF and oxygen sensor work?
The MAF sensor provides the open-loop controller predicted air flow information (the measured air flow) to the ECU, and the oxygen sensor provides closed-loop feedback in order to make minor corrections to the predicted air mass. Also see MAP sensor.
What should I use to clean my Volvo MAF sensor?
With a bottle of CRC electronic cleaner, purchased at most hardware stores and Walmart, spray the sensor filament. Give it a good direct spray several times. This will dissolve any junk that has built up on it and dry very quickly. Be careful however as the filament is very fragile.