When a massive airflow, or MAF, sensor is defective, the right amount of air does not enter the engine. This leads to poor overall performance of the vehicle.Continue Reading
The MAF measures the air entering a vehicle's intake, which is part of the fuel injection engine. The MAF sensor communicates the airflow measurements to the vehicle's engine control unit, or ECU. The ECU is the vehicle's onboard computer, which takes the airflow information and calculates the delivery of fuel and the timing of the spark.
If the MAF sensor is not functioning properly, it creates a number of problems that affect the performance of the vehicle, which mainly manifest in the engine. The engine can be difficult to start, or hesitate, stall, hiccup or drag after starting. There can also be jerks or hesitation while the vehicle is accelerating.
A defective MAF sensor typically generates a particular code that a mechanic can determine easily using computer diagnostic tools. As replacing a faulty MAF sensor can be costly, drivers can take preventative measures by maintaining the sensor around twice per year or when they change the oil or air filter. This involves removing, cleaning, drying and then reinstalling the MAF sensor.Learn more about Technology
The mass air flow sensor is located right after a car's air filter along the intake pipe before the engine. The sensor helps a car's computer determine how much fuel and spark the engine should be outputting.Full Answer >
The typical signs of a faulty oxygen sensor include increased exhaust emissions due to poor air fuel mixture, engine hesitations, engine misfires, stalling, rough idling and increased fuel consumption. The oxygen sensor is a crucial component of a vehicle's electronic fuel injection and emission system, and it relays information to an on-board engine management computer that regulates fuel delivery to the engine.Full Answer >
Some common General Motors trouble codes include P1500, which indicates a problem with the starter signal circuit; P1514, in which the airflow to the throttle position sensor is too high; P1531, which indicates that the air conditioner's refrigerant is low; P1584, which shows that cruise control is disabled; and P1599, which detects an engine stall. Trouble codes from P1680 to P1687 show that there is a powertrain control module fault.Full Answer >
Most cars have a throttle position sensor, manifold pressure sensor, engine coolant temperature sensor, mass air flow sensor, camshaft and crankshaft position sensors and a oxygen sensor. Automobiles also have detonation sensors, EGR sensors and intake air temperature sensors.Full Answer >