When you say it won't stop running - do you mean that after the normal allotted time of 5-10 minutes it still continues to run? Many car fans will run about 5-10 minutes but not necessarily longer. Depending on the make/model of your vehicle - you may want to call the dealer for any "recalls" on your car if the fan doesn't shut off after 10 minutes.
Thermal relay is stuck. Replace it.
cooling fan relay is bad?
That you either come to a stop, or go on running, or walking, perpetually.
bad soilinoid on starter
Everything will shut down and the car will stop running.
There are some unknowns here. 1. Did you shut it off and it made a noise, OR 2. Did the car stop running suddenly, making a noise? If you shut the car off, some quiet noises are normal. You may hear the fuel pump from the rear of the car for a couple seconds, and you may hear a solenoid under the hood for a second or two, or the electric radiator fan after the car is shut off. The other question is what kind of noise was it? A loud bang? A whoosh noise, a scrape noise? Did the engine seem to try and keep running? Please add more detail and I'll try to help.
The valve seat or washer on the main valve are not seating/sealing properly.
I have same...Fan Controller on front clip bad, or shorted lower radiator thermo switch, drivers side.
If the radiator fan does not shut off on a 1996 Chrysler Cirrus, the fan relay might be bad. The fan relay is usually located in a bank of relays near the battery.
that's not a real question so ask somthing else
It will ruin the engine and make it stop that way Depending on the car it may just make the car shut off
it shouldn't stop blowing, but the compressor will shut off momentarily while you accelerate to get slightly more horsepower than it would with the compressor running