BLUE MAGIC

Hey guys I've been looking up on getting efans for my 07 4.6 nd on here I see everyone talking about a control for $120,do u really need that?? I found some dual efans for 60 brand new and I went to a shop near my town nd all they said was to get the relays nd they wud install it,but do I really need that control?? Jus to b sure....

djjr50

The controller tells the relays when to activate the fans. (I think thats right) You dont want/need your fans to run all the time. So I would say that you need them.

BLUE MAGIC

But isn't the stock belt driven fan always running?? I was jus thinkin about installing them jus like that,what are some backfires?? Ha

djjr50

Were you not planning on removing the stock fan? You can add an E-Fan to help low-speed cooling. But Most remove the stock fan because it frees up a horsepower or two and gives you more room to work in the engine bay.

The stock fan has a clutch. It also has the ability to spin faster than the engine is turning (when air forces it to spin like at highway speeds). The fan always spins, but that is why its not as efficient as an E-Fan. An E-Fan can spin faster at low speeds, providing you with the CFU's you need to cool your radiator and air conditioning condenser.

BLUE MAGIC

Yes I am removing my belt driven stock fan to free up some HP,but I was wondering if I really really needed the control. A shop I went to jus told me to get a a wiring harness and a relay,that was it I did some research jus to make sure but everyone here seems to use the control.....

djjr50

I am sure you can run without the controller, but the fan will just run (unless I am mistaken).

truck4546969

whats the problem if the fan runs on all the time? The only disadvantage is see is that it may draw power all the time as opposed to only some times

8up

Your engine wont operate at the proper tempture 190* or so.
I'm shure someone else will have more info on this.

BLUE MAGIC

Because I was thinkin on just buying a better thermostat nd keepin the truck cool,I was jus gona buy relays nd some harness nd install them.I have a capacitor for my system and a optima battery so I'm thinkin even if there on the whole time (fans) there wouldnt b a problem,but I'm not too sure so I posted this