radiator fan direction!

**nam.qhc** · 09-07-2011 01:43 AM

hey guys! i just replaced my old leaking radiator with an aluminum radiator+thermo slim fan! i forgot to check which way the fan is suppose to face! in my mind, i thought it was to pull air into the engine bay! but not 100% sure! so is it suppose to pull air in? or push hot air out? i did do research.. some say pull some say push (apparently minimal difference). i want to know what ozhonda members knows! thanks in advance! i am leanin towards pulling air!

**TbM** · 09-07-2011 05:45 AM

They are meant to pull, that way your getting cooler air from outside the engine bay. If it was set up to push the fan would have to work against the air trying to come in when you start moving forward.

**hoojee** · 10-07-2011 12:17 PM

depends on which side you put the fan.

the OEM and most efficient way is to mount the fan behind the radiator (towards engine bay) and let the fan pull air into the bay.
another way you can do (maybe because of clearance issues or aesthetic reasons) is to mount the fan on the front of the radiator (fan towards the front bumper) reverse wire it, so it pushes air into the engine bay.

regardless of which way you mount the fan, the fan should be wired up in a manner than air is push/pulled into the engine bay.