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Have you tested the cooling fan itself? If not then I suggest that you pull out the fan, tap a wire one on the negative battery and other to the positive battery terminal. Tap it to the connector of the fan motor, if it doesn't run then you will need to replace the cooling fan itself. Faulty cooling fan motor can be the issue here and will surely need replacement.
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The auto stutdown relay will turn the fuel pump and fuel injection system off. This relay is marked in the underhood fuse relay panel. The senser that it may be shutting down for may be the coolant temperture senser. There might not be anything wrong with the senser as the therostate could be stuck and the cars overheating ( at the senser). There's an air charge temperture senser too and itr's screwed into the air cleaner housing or hose and if it gets too hot, or reports faulsely that it's too hot it'll shut down. But let's say that it's not too hot and the coolant is full and the cooling system is working right ( the readitor fan comes on when it's hot and shuts off as the fan brings the temperture down low enough that the fan is'nt needed. ) Their are parts in the ingtion that'll do this too. the coil. the computer, the distrubuter pickup and the crank and cam sensers. These things if they drop out won't nessarily turn the check engine light on but, will show on a licve time scanner as not putting a singnal out as they arn't working. The fuel pump can overheat as if the fuel filter may be partly clogged andf the pump is trying too hard to make pressure and the pump finally gets hot enough to stop. If the check engine light is on with the engine running it's likly that the codes stored in the computer will give a good ides as to why it's shutting down.
your fan stays on because your engine is running a little hot. once it cools itself off it shuts off. check your cooling system, maybe a little low on coolant/ water pump may be going out/ bad flow thru your radiator. hope this at leased gives you a starting point...god bless.
yes the battery will drain down very fast. raise the hood and go to the under hood relay box look for cooling fan relay and remove there may be two one for low speed and one for high speed.or u can unplug the cooling fan it self.just a two wire connector may have to use a small flat screw driver to raise the retainer.hope this helps.
You won't know which until you check. Unlikely the wires. Fuse or sencer most likely. Check the large fuses first. If it is the fuse then check the wires as somthing the matter with them or the fan itself. Turn the fan with your hand (with engine turned off.) it should turn freely. If all this is ok then you need a senser.
You may need to replace your thermostat. This is normal for the fan to run after you turn your car off but if you say its running for 20 minutes or longer, it may mean your thermostat is stuck and causing the fan to run longer to cool off the radiator. Its a good thing for the fan to run. Heat is your enemy. I rather the fan run than no fan at all, if your car overheats, you could blow a gasket or warp your valves and its really pricey if that happens