Radiator Fan

[nuffsaid]

Hi all

I have a 34 GTT and was wondering when the radiator fan (the one that blows onto the radiator) is supposed to be on?

Is it supposed to be always on?

In the morning I drive it to work (5 mins away) and never see it come on, is this strange?

My oil and water temps all seem normal.

Thanks

[blind_elk]

Had you done a search, you would have found .....

[nuffsaid]

Theres the black fan on the right side of the engine bay, and then there is the big white fan that blows onto the motor.

I am talking about the smaller black fan thats pushes air through the radiator. Dont know whether this is the aircon fan? So many fans I am confused! haha

[nuffsaid]

Had you done a search, you would have found .....

I have done a search and found 30 pages of crap.

And on some threads, people are saying it comes on when the car is on, others when the temp reaches X degrees.

I found your post as per below:

"The A/C fan is controlled by the thermatic switch in the bottom tank of the radiator. It only activates when the coolant temp gets too high. Under normal circumstances, the standard engine fan is able to maintain sufficient airflow to keep the A/C radiator cool.

However, if you have the A/C re-gassed with the modern stuff (R134a ?), get the fan re-wired to come on with the A/C."

Is the A/C fan the one that blows onto the radiator? If so then mine does not turn on when the air con turned on during a cold start (I hear something else click and sound like a fan though when the A/C is on, I think thats the compressor)

How hot does everything have to get before its turned on, even short 10 minute drives and it doesnt come on. I should really take it for a thrash and find out.

Edited March 15, 2006 by nuffsaid

[blind_elk]

It only activates when the coolant temp gets too high....

ie, when the engine starts to overheat with the A/C on. The 'switch-on' point of the switch is a few degrees above the thermostatted temp of the engine.

As I said in the post of mine that you found, the standard engine fan is usually capable of pulling enough air through the A/C radiator to control its temperature.

[nuffsaid]

Oh so even if the water temp guage is sitting halfway, it doesnt mean it should come on?

But say the air conditioning is on, and its a warm day and the car has been driven around for a bit, you'd expect it to be on right?

And when you are referring to the engine fan? thats the big one in the middle right? then where is this a/c radiator?

[blind_elk]

Oh so even if the water temp guage is sitting halfway, it doesnt mean it should come on?

Right.

But say the air conditioning is on, and its a warm day and the car has been driven around for a bit, you'd expect it to be on right?

Not necessarily. If the engine isn't overheating under the load of running the A/C in the hot weather, then the fan won't come on.

And when you are referring to the engine fan? thats the big one in the middle right?

Yes, the one attached to the front of the engine.

then where is this a/c radiator?

It's the silvery one, out front; the one with the A/C fan bolted to it.

[nuffsaid]

Most of the points above I understand.

However, now I have to clarify:

are there 2 fans only, the engine and the A/C?

so the one I am referring to must be the A/C fan?

then why is this fan blowing directly onto a black radiator (the main big one) and not the A/C radiator which I now have to go and find somewhere. hahah

[blind_elk]

Most of the points above I understand.

However, now I have to clarify:

are there 2 fans only, the engine and the A/C?

so the one I am referring to must be the A/C fan?

then why is this fan blowing directly onto a black radiator (the main big one) and not the A/C radiator which I now have to go and find somewhere. hahah

Maybe someone painted it. If your A/C works, then you have an A/C radiator in front of the main radiator.

[nuffsaid]

A/C definately works, especially when the car is parked under shade on a hot day.

However if the car has been out in the sun all day on a hot day, it doesnt work as well, but thats normal I think, all this black interior in the car doesnt help on sunny days! hahah

I also noticed that even at night, the cabin of the car can get a little warm, is this normal for skylines? they seem to make alot of heat. you can feel warm air coming through the air vents sometimes (heater is not on)