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Due to various “malfunctions” of the oxygen sensor, serious problems with the engine can occur. But few people know that it is possible to obtain data on the
To begin with, we recall that an important spare part is installed on the exhaust pipe and is part of the power unit control system. A sensor is needed so that the controller correctly determines the composition of the fuel-air mixture on which the engine is running. Accordingly, he could impoverish or enrich her.
Every time a defective part “tricks” the controller. For example, it shows that the mixture is too rich, when in reality it is not. Because of this, the electronics deplete it and the engine begins to function unstable. Especially when idle. The control is elementary. We unscrew the sensor and watch the reaction of the “steel heart”. If everything is smooth and stable, that’s the reason. Then you need to replace the spare part or try to clean it.
Often the sensitive element, which determines the amount of oxygen in the exhaust gases, is overgrown with soot and therefore does not work properly. Usually it gives off a high voltage, that is, it shows a rich mixture. You can try to “breathe life into it” simply by driving on the highway at high speeds (from 3500 rpm). Then the temperature of the exhaust gases becomes high, the sensor becomes very hot and the carbon deposits just come off. Often such an “unrecoverable” method helps.
You can also make a more accurate diagnosis with a multimeter. For example, they measure the charge of the battery. Many car enthusiasts have this. To do this, first connect the probes of the device to an unheated sensor. The usual voltage is 450 microvolts. But after warming up, it starts fluctuating in the region of 100 to 900 microvolts. According to these figures, the composition of the mixture and the serviceability of the mechanism are judged. The upper level (900 microvolts) says the mixture is rich, the low level says the mixture is lean.
Then we deliberately create air leaks and see how the device reacts to this. If the signal drops to 100 microvolts, “oxygen” is working correctly. Otherwise, you must replace the spare part with a new one.
To begin with, we recall that an important spare part is installed on the exhaust pipe and is part of the power unit control system. A sensor is needed so that the controller correctly determines the composition of the fuel-air mixture on which the engine is running. Accordingly, he could impoverish or enrich her.
Every time a defective part “tricks” the controller. For example, it shows that the mixture is too rich, when in reality it is not. Because of this, the electronics deplete it and the engine begins to function unstable. Especially when idle. The control is elementary. We unscrew the sensor and watch the reaction of the “steel heart”. If everything is smooth and stable, that’s the reason. Then you need to replace the spare part or try to clean it.
Often the sensitive element, which determines the amount of oxygen in the exhaust gases, is overgrown with soot and therefore does not work properly. Usually it gives off a high voltage, that is, it shows a rich mixture. You can try to “breathe life into it” simply by driving on the highway at high speeds (from 3500 rpm). Then the temperature of the exhaust gases becomes high, the sensor becomes very hot and the carbon deposits just come off. Often such an “unrecoverable” method helps.
You can also make a more accurate diagnosis with a multimeter. For example, they measure the charge of the battery. Many car enthusiasts have this. To do this, first connect the probes of the device to an unheated sensor. The usual voltage is 450 microvolts. But after warming up, it starts fluctuating in the region of 100 to 900 microvolts. According to these figures, the composition of the mixture and the serviceability of the mechanism are judged. The upper level (900 microvolts) says the mixture is rich, the low level says the mixture is lean.
Then we deliberately create air leaks and see how the device reacts to this. If the signal drops to 100 microvolts, “oxygen” is working correctly. Otherwise, you must replace the spare part with a new one.
Source: Avto Vzglyad
Donald Salinas is an experienced automobile journalist and writer for Div Bracket. He brings his readers the latest news and developments from the world of automobiles, offering a unique and knowledgeable perspective on the latest trends and innovations in the automotive industry.
