What causes a radiator fan to stay on?
Cooling fans stay on at all times If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.
Is the cooling fan supposed to run constantly?
It can be normal for the cooling fans to run constantly under certain conditions. If the car is hot enough, they may be barely keeping up with demand and stay on. Also, most cars will run the fans at a high speed if the A/C is turned on.
Will a fan drain a car battery?
So: 50 x 8 = 400 W (this is 400W power during 1 hour) For your fan, 400 / 30 ~ 13.3 hr Considering losses: 12 hours of total fan if battery is fully charged. THIS IS THE BEST CASE you’ll get, normally it’s less.
Where is the radiator cooling fan relay located?
The fan relay is usually located near the bottom of the engine compartment on a metal frame member. The metal acts as a heat sink to keep the fan relay cool. So, unplug the connector at the relay and repeat the check for power. If you get power, you’ve got a bum relay.
Is there a fuse for the radiator fan?
If your car’s radiator fan is non-functional, check your car’s user manual and locate the fuse for the radiator fan controller or the fan. The fan itself often uses a big fuse of around 50A, while there might also be a separate small fuse to the fan control module.
How long does car battery last with fan on?
Your 30 watt fan will draw about 2.5 amps at 12 volts (2.5 times 12 is 30). Assuming 90% efficiency from the inverter means that the inverter will draw 2.5/. 9, or 2.78 amps. A 50 Ahr battery will last 50/2.78 or 18 hours.
Can a fan relay drain your battery?
This can be caused by the relay coil burning up and physically breaking. When your battery drains overnight, this is an example of things not turning off. This can be caused by the relay contacts welding and being stuck. In either case, its time for a new relay.