2023 Author: Erin Ralphs | [email protected]. Last modified: 2023-05-20 18:31
The mass air flow sensor (MAF) is a part that determines the amount of air flow supplied through the air filter. This mechanism is located near the same filter. Despite its small size, this sensor plays a very important role in the car. A failure of the DMRV can adversely affect the operation of the entire engine. Therefore, in order to avoid unpleasant consequences, you need to regularly diagnose this part and, if necessary, repair or replace it.
Signs of malfunctioning DMRV
You can determine that the air flow sensor is defective by the following symptoms. First, it is reflected in the increased fuel consumption. Secondly, the signs of a malfunction of the DMRV may be a loss of engine power. It is also worth sounding the alarm when the "Check Engine" error appears on the instrument panel. Another symptom is poor hot starting.
However, at the same time, it is worth remembering that allThe above signs of a malfunction of the DMRV may indicate other breakdowns. In particular, poor starting of the engine is manifested in a poorly adjusted carburetor. Loss of engine power can be hidden in a dirty filter. The "Check Engine" light appears when the lambda probe sensor is faulty. And the cause of increased fuel consumption is often a dirty filter. Therefore, in order to find out whether the car is really “dressing up” because of the air flow sensor, you need to get to it yourself and diagnose it.
The best diagnostic equipment for the MAF will be a motor tester. However, if you don’t have such a tool at home, you can use a conventional voltmeter with a 2 V scale. To determine whether these are real signs of a VAZ DMRV malfunction or not, we insert the pin all the way into contact between the yellow wire and the seal. Then turn on the ignition and look at the scale. Ideally, the voltage should range from 0.98 to 0.99 volts. A small error of 0.03 V is allowed. If the arrow on the scale showed less than 0.95 or more than 1.03 V, this indicates that the signs of a malfunction of the VAZ 2110 DMRV were confirmed. But you don't have to change the sensor right away. We still have a chance to bring him back to life.
So, unscrew the fasteners of the block and proceed to repair. To do this, prepare an aerosol carburetor cleaner and bend the tube at a right angle, preheating it with a match. Furthercut the tube so that the jet beats to the side, and the part itself is straight. We introduce the latter to a depth of 9-10 millimeters into the upper channel of the DMRV and clean the resistor. It is strictly forbidden to use cotton swabs in this case. After a few minutes, we repeat everything again. After the part has dried, put it back into the case and measure the voltage with the same voltmeter. If the received data correspond to the above values, the MAF has been successfully repaired. Well, if the arrow drops below 0.95 V, you need to do a complete replacement of the part. No other is given.