Fan won't shut off on my 1996 acura 2.5 tl...kills the battery.
Even when the car is off the fan kicks on until the battery is dead...I replaced the rely switch...still does it. the radiator recently blew and was replaced with a new thermostat..the problem existed before and continues
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The fan on a 1996 Acura RL will normally run for a short period after the engine is shut off if the temperature sensor determines the engine is too hot. However, if it is running constantly and not shutting off after you shut off your engine, then you will need to replace the fan relay. It is most likely stuck in a closed position. If your fan does shut off after running for a period of time when you shut off the engine but you have a noisy fan, then most likey the fan bearings are wearing out and it is more cost-effective to replace the whole fan. Thanks for using Fixya.
Before ordering or installing fans I would buy and change your Coolant Temperature Senor on top of the engine block. It plugs in to the ECU and tells the fan when to kick the fans on. If that does not work you also have a temperature on the bottom of the radiator, known as your fan switch.
The connection at the blower resistor on these model years had problems with poor connections. The increased resistance on the terminals caused them to heat up and burn. Some would go open circuit and not work at all and some would short to ground and run all the time, like yours. As you have already discovered, you will need to replace the pieces.
Start with the easy one (hopefully). You probably have to replace your turn signal flasher. It's located behind the dash, driver side of steering column in the relay block (just pull out to remove). Your overheating problem: Are you losing coolant, or is the car just running hot? Any leaks, puddles? Check the cooling fans to make sure they are kicking on as the engine temp rises. If not, you may have a bad switch that is not telling the fan to go on. If fan(s) are operating ok, check the thermostat. If it isn't opening properly, it could be the cause of the overheating. If you have a leak in the system, then when it gets too low, it starts to overheat. Many possibilities, So, let me know the answers to the above so I can help further if needed.