Green_Goblin

Hi,
I have changed my radiator and i got twin fans for it in my99 impreza, i noticed that on the loom that runs along the bottom of the radiator, it had a plug in place for a second fan, so connected both the fans up....one to the original plug and the other to the spare plug.....but after running the car have found only the original plug is giving power to make the fan run!!
Is there another fuse that need put in place to get the second fan running as its not normally used or is this a wiring fault??

Brun

The second fan is for cars fitted with a/c

RB5 Boyo

Could the two not be easily rigged up though to run together to cool the engine down quicker??

PeeVee

iTrader: (1)

1 Fan is all you need to cool the engine on a non air con equipped classic , the system in place is very efficient.

RB5 Boyo

Was just thinking it would be extra efficient as i have my aircon removed and the spare fan is doing nothing now

PeeVee

iTrader: (1)

Yea can see your logic, but the classics cooling system is more than capable of controlling temps with the one fan, so my school of thought is to remove the second fan and get rid of the weight.... Unless of course you have a rally or racing car.

A second fan running just doubles the load on the alternator and saps power from the engine

If you really want both running though, you would have to wire it through another suitable relay and fuse, using the feed to the first fan as a trigger for the second fan relay.

A lot of grief for no gain imho.

Green_Goblin

Cheers for the comments guys!!

The reason i dont it this way was cause im now going down the big BHP road and should be putting out more than 500bhp when engines run in and mapped, i got a alloy radiator with twin fans and wanted it to give extra cooling.

Jase