You should always start looking for the cause with the car's power supply. Find out if there is any in the gas tank: the instrument readings may be wrong. There is a special well in the tank, in which the gas pump is located, it should not work without gasoline. On the "ten" it is bad when the tank is full, and bad when it is empty, fill up with gasoline more often. To increase the reliability of the gas pump, there are special additives that improve its operation. By the noise under the back seat, you can determine whether the pump is working or not.
First, check the fuse in the injection power supply system. If it does not work, go to the electric fuel pump power supply. Next to the fuel pump, there is a block with a positive drive for heating the rear window. By connecting this drive, you finally make sure whether the fuel pump works or not.
To make sure that the fuel system is faulty, you need to open the throttle valve and pour a little gasoline into the intake manifold. Turn on the ignition and starter. If the engine sneezed or started. The fuel supply system is in good order. But you need to pour a little gasoline; if the system has a neutralizer, it can also fail. After its failure, the engine often loses power and stops. Then the engine can start for an indefinite period of time, but when starting off, it stalls again. If you need to drive, loosen the clamp in front of the neutralizer, allow the exhaust gases to escape.
We will consider faulty sensors and other elements of the power supply system that affect operation in the next section, but you can drive with faulty sensors. Only a faulty crankshaft speed (position) sensor stops the engine when it fails.
The text is on the website: www.VazBook.ru
The ignition system unit works reliably, and if voltage is not supplied to only one spark plug, then it will triple and you can drive. If the entire unit fails, then the engine switches off instantly.