Fault phenomenon
    Volkswagen Passat 1.8T automatic transmission. After driving for some time, stop half an hour after the bad car. Immediately after the car and then a good car. Repair shop to the canister solenoid valve to the canister of the tube pulled out after the test for two days, the fault disappears. How is this going?
    When the car and the car was tried, try the canister solenoid valve is always open. Is it broken? How can we know that the cans are blocked? Like this kind of phenomenon with carbon cans? Or only for a carbon canister solenoid valve on the line?
    Failure analysis
    The role of the canister is when the engine is turned off, the gasoline steam and fresh air mixed in the tank and stored in the activated carbon cans, when the engine starts, installed in the activated carbon tank and the intake manifold between the electromagnetic valve open, Carbon tank of gasoline in the intake of the vacuum under the action of the clean air into the cylinder to participate in the combustion. This not only reduces emissions, but also reduces fuel consumption.
    If the solenoid valve is always in the open state, the engine air intake of the mixture has been in the thickened state, while the engine control unit at this time because there is no control of the canister solenoid valve work, it will not be issued Reduce the amount of fuel injection instructions, which will cause a hot car when the mixture is too thick caused by engine flameout, and hot car after the flame is not easy to start the phenomenon.
    Because you do not see the car, according to the situation you should be a canister solenoid valve failure, it is recommended that you first try to replace the solenoid valve, I hope my answer will help you.