This most frequently is caused by the water getting onto the high-voltage wires or connections leading to the spark plugs, or the plugs themselves.
If the car is still rolling, shift to neutral and steer carefully off to the shoulder or other safe place (easier said than done, as the Power Steering will not be working). Then just wait -- the spark plugs and associated wiring will have been warm and the heat will evaporate the moisture relatively quickly.
Don't get impatient and keep cranking the engine continuously -- this will at the very least drain the battery and at most damage other components like the starter. If it doesn't start, wait a few more minutes and try again.
You probably got the ignition wet. It will have to be thoroughly dried before it will start and run again.
If there is no shut off valve for the refrigerator water line, you should consider installing one to easily turn off the water supply in case of leaks or maintenance. It is important to have a shut off valve for safety and convenience.
If there is no shut off valve on your hot water heater, you should contact a licensed plumber to install one for safety and maintenance purposes.
If you have your own water heater there should be a shut off at the heater. If not I would look under the kitchen sink. There may be shut off valves at each fixture. If there is a central water heater in the basement, there would be a shut off to each unit.
Which water you talking about? Under the kitchen sink there should be a C/W shut off If your talking toilet there should be a shut off left hand side under the tank. Shower or bath tub possibly integral stops Main cold water shut off Normally by the house trap. Multi story building a cold water riser
drain the water tank
Thermostat could be stuck shut. Or the water pump could be failing.
If the shut off valve turns but does not shut the water off, the washer in it has split and probably made it to the faucet. It was blocking part of the hole on the hot side and at some point either shifted or made it through the faucet and in in the screen in the end of the spout. Shut the main water off and replace the washer in the shut off valve.
Showers and tubs do not usually have shut off valves on the supply lines. To shut the water off you will have to shut off the main water line. There should be one on the cold water line to the water heater. This may shut both the hot and cold off or just the hot. There will be one in the main line coming into the house on the basement wall closest to the street or at the water meter.
When the water is shut off, you should first check with your water provider for information on the outage. It's important to conserve water, use stored water if available, and consider alternative sources like bottled water or neighbors. If the outage is prolonged, you may need to make arrangements for bathing, cooking, and sanitation.
If fuel cannot get through the fuel filter, it will stop running.
To shut off a saddle valve, turn the handle clockwise until it is fully closed. This will stop the flow of water through the valve.