After starting the engine immediately stalls? why does this happen
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The engine starts and stalls: troubleshooting The engine stalls immediately after starting So, if such a problem has appeared, then it is necessary to take into account a number of features. First of all, the following factors will affect the operation of the internal combustion engine after starting: fuel supply; air supply; spark on spark plugs (for gasoline internal combustion engines); correct operation of glow plugs (for diesel engines); correct operation of the ECM and electronic sensors; At the same time, malfunctions of the CPG, low compression, significantly knocked down timing phases and other nuances in this case are taken into account, but do not come to the fore. The fact is that the power unit, if there are serious problems, is unlikely to start even for a short time. Taking into account the above, first of all, you should start by checking the main possible causes: Quite often, malfunctions in the alarm and anti-theft system can cause the engine to refuse to work after starting. In other words, the immobilizer does not turn off and continues to block the start of the internal combustion engine, which is its main function to prevent vehicle theft. If the alarm blocks the engine, then it is necessary to check the operation of all elements, try to reset the error, disable the anti-theft system, etc. Problems with the IAC and idle speed control valve often occur due to contamination of these elements. You should also pay attention to the cleanliness of the throttle valve. As for the crankshaft sensor, incorrect data that it transmits to the ECU can cause the engine to stop immediately after starting. Low-quality fuel and lubricants can also cause problems. As a rule, problems begin in cases where low-grade fuel was refueled or the engine uses engine oil that does not meet the recommendations / has lost its properties. A faulty fuel pump, air leaks in the fuel line, the formation of air locks and contamination of fuel filters do not allow creating the necessary pressure in the fuel system or supplying fuel in the required volume. The air filter and its contamination leads to the fact that the working mixture is significantly over-enriched. In other words, the engine does not have enough air to burn the fuel, the spark plugs are flooded. Problems with ECM sensors (EGR sensor, oxygen sensor, crankshaft position sensor, etc.) can lead to both unstable engine operation at idle and to a complete engine stop after starting. Help develop the channel: Yandex.Money 4100 1247 4375 83 Sber.Card 4276 6726 9189 5432 Tired of paying for diagnostics? Ask for advice in the VK group https://vk.com/club_autotema
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