Can I make the car radiator fan "Always On" during summer days?
The proper running temperature of my engine shall be around 80-110 celsius degrees,
the AC doesn't blow enough powerful cold air when the car is stationary idling,
and when the car moves, it blows cold air better.
And, if the car is idling stationary when blowing plain non-AC air,
the air-flow eventually gets hot.
I wonder if I can connect the radiator fan directly to the output connectors of the alternator,
then the fan would be always on when the engine is running,
could it make the AC blow cooler air without making the engine too cool,
and without damaging the alternator and the car (computer systems, check engine light)?
Where else can I connect the fan to?
(btw, if in winter northern Canada, can someone disable the radiator fans and drive, without overheating a fuel-engine car?)
You really don't want to mess around too much with your electrical system. It's easy to make a mess of things on a modern car.
One way would be to disconnect the fan from the wiring harness to isolate it. Then run a new fused circuit from the battery using a relay that is controlled from a source that is switched with the ignition.
On most cars though the radiator fan should turn on automatically with the air conditioning. Do you have a pusher fan mounted on the condenser? Failure of a condenser fan when so equipped is a common cause of AC losing effectiveness when the car is stationary.
You would not want to disconnect the radiator fan for the winter. It will not turn on anyway unless the engine temperature rises to the point where it is needed.
yes, and all these fans are blowing for good, currently
I'm just not too satisfied about the ac when the vehicle is not moving
If the fans are already all blowing when the AC is on the fans are not the problem. Could be anything from being a little low on refrigerant to debris or bent fins blocking the condenser, to just having an AC system with insufficient capacity to cool under those conditions.
There is a way to wire the fan system to always be on, but I'm not sure if the alternator is the only way to do it. I'm not 100% sure but it may be possible to wire the fan to the ignition. My old Chrysler has the electric choke wired to the ignition, so I don't see why you couldn't do the same there. But make sure it will turn itself off when you turn the car off, leaving it on will cause the battery to die. Or if you don't wanna put in any money or work, just roll the windows down, that's what I do since none of my cars have working AC.
Also, since the air eventually gets hot, maybe try seeing if you are running out of AC refrigerant or if the compressor is wearing out, that's could be the issue there as well.
no sry, i mean when the wind is turned on blowing without activating AC, it eventually gets hot
the AC is doing quite good when it's activated, it gives me cool air
If A/C blows hot, then there is a problem. Fans won't help.
You don't need fans blowing all the time. It will waster power (gas). When the car is moving >50mph the fans do nothing. Normal airflow surpasses them.
if in winter northern Canada, can someone disable the radiator fans
The vehicle control is smart enough to handle this. If the fans are not needed they are turned off
no sry, i mean when the wind is turned on blowing without activating AC, it eventually gets hot
the AC is doing quite good when it's activated, it gives me cool air
When the car is moving >50mph the fans do nothing, okay i got it thx