cooling fan/ fans, confusion! Need some help on this one.

crigal.bb6 · Post by **crigal.bb6** » Mon Mar 03, 2014 8:31 pm

Hello people. My cooling fans aren't working on my 95 bb4 so today I bridged the connector to the fanswitch to see if they came on. The small fan turned on so that means I need a new fanswitch, but I dont understand y the big one didnt come on.
I tried the same thing on my sick, poorly bb4 and both the fans came on......is that wright? Just to be sure I had a go on my mates 5gen and only the big fan turned on. Thats 3 different outcomes to the same test people. Which is correct? Lol. Wtf!
Also can anyone tell me why ther are 2 fans and what ther separate jobs are......random I know but I am interested in why u wound need to different sizes? Lol.
Cheers.

Post by **si import** » Mon Mar 03, 2014 9:28 pm

Im sure one is for the aircon

JDM-BB4 · Post by **JDM-BB4** » Mon Mar 03, 2014 9:30 pm

si import wrote:Im sure one is for the aircon

I'm sure you are right about that.

Post by **vanzep** » Mon Mar 03, 2014 10:33 pm

yep cooling fan on passenger side is aircon fan and radiator fan is on drivers side both come on at peak temp,

crigal.bb6 · Post by **crigal.bb6** » Mon Mar 03, 2014 11:16 pm

Ok. That means my aircon fan is working and my rad fan isnt. Im going to just switch the rads from one car to other car with the fans on them. Long but its the only way I believe.

Jamie P 2013 · Post by **Jamie P 2013** » Tue Mar 04, 2014 4:31 pm

So it makes me come to the conclusion that my aircon fan doesnt work. But my aircon is still working

Turbomick1985 · Post by **Turbomick1985** » Tue Mar 04, 2014 7:37 pm

I had something similar happen on my 5th gen 2.0 and it was thermostat, quick and easy to fix, I did it myself and Im terrible at mechanical stuff, you might want to see if its the thermostat before you go pulling radiators out of cars

crigal.bb6 · Post by **crigal.bb6** » Tue Mar 04, 2014 8:30 pm

Turbomick1985 wrote:I had something similar happen on my 5th gen 2.0 and it was thermostat, quick and easy to fix, I did it myself and Im terrible at mechanical stuff, you might want to see if its the thermostat before you go pulling radiators out of cars

I cant see it being the thermostat as it didnt have one when I bought it lol. So wierod....... I fitted a new one a couple of mounths ago. Gauge reads correct temp. Did your temp gauge work correctly. I.e get up to temp?
Thanks for your help in advance.

crigal.bb6 · Post by **crigal.bb6** » Tue Mar 04, 2014 8:34 pm

Jamie P 2013 wrote:So it makes me come to the conclusion that my aircon fan doesnt work. But my aircon is still working

Thats what I mean I dont understand what is going on.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Tue Mar 04, 2014 9:58 pm

The air con condensor fan is only needed to keep the air con properly cold if you're sat in traffic (it keeps air moving over the condensor to dump the heat that it's taken out of the cabin).

If the car is moving, or you're sat in traffic but the external air temp isn't that hot, your air-con will work perfectly normally - the air con condensor fan isn't needed.