Never hear radiator fans turn on

[Vwgtivw]

I never ever use my a/c or heater in my car it's always windows down but I also have never heard my fans turn on even after a hot day. Do you think my fans are bad? Would I get a CEL? I also har an Fmic if that helps

 

[UGFast89]

Your fan isnt bad at all. My buddies mkv fan never comes on unless he beats the shit out of the ac fan. He said its only come on twice since he's owned it. Btw, why wouldnt you run the ac when driving the expressway?

 

[Vwgtivw]

Your fan isnt bad at all. My buddies mkv fan never comes on unless he beats the shit out of the ac fan. He said its only come on twice since he's owned it. Btw, why wouldnt you run the ac when driving the expressway?

I always drive with windows down and I don't get hot at all. Also 80% of the time I drive my car is very early morning or evening.

 

[UGFast89]

So did I but I meant as in fuel economy lol its better to drive with the windows closed and with ac in the expressway than it is to leave em open.

 

[Vwgtivw]

So did I but I meant as in fuel economy lol its better to drive with the windows closed and with ac in the expressway than it is to leave em open.

Oh I didn't think it made a big difference driving with windows down on expressway. I guess the drag factor and all, I normally just never use my a/c to be honest even with windows up its a nice temp in my car

 

[vdub_cordi]

how does ac play a role in fuel economy i didnt no that

 

[Kwiksilver07]

So did I but I meant as in fuel economy lol its better to drive with the windows closed and with ac in the expressway than it is to leave em open.

This is a myth. It may vary by a mpg or two but its not significantly different. Your drag is mainly based off vehicle size, aerodynamics, weight, engine size, and drivetrain. Putting your windows up will slightly decrease your drag coefficient yielding better gas milage, but not significantly more then what you get already.

 

[lightningjack]

how does ac play a role in fuel economy i didnt no that

The extra strain on the engine to run the compressor for the AC reduces mileage, or that's what they sued to say. I don't know that it's much different than the wind resistance driving like I do with the windows down and sunroof open as often as possible.

 

[The Fed]

With the windows down the air goes into the car and gets trapped against the rear hatch. How does that not hurt MPG?

And the fans are two-speed. The big one is running on low speed, and will go to high speed if you are stopped for too long.

 

[vagike]

the fans speed are modulated/regulated too. If and/or when a fan kicks on, it may not even be at full speed. The ECU will only spin the fan as fast as it needs.