Fan constantly on

[Kernowel]

Hi I have an AFT diesel and 'The Fan' has recently started coming on as soon as I turn the ignition on - and it is constantly on. I note that Doone memberlist.php?mode=viewprofile&u=57 said earlier " If the auxiliary fan (scavenger fan) is running all the time, then the temperature sensor by the handbrake is disconnected.
Excuse my stupidity but which one is the aux fan and which one is the primary fan and is it possible that one is missing??

Yes, I am that thick when it comes to Bongo auto engineering

Cheers!
Hosk

[g8dhe]

There are actually three sets of fans The pair behind the radiator for cooling the engine coolant and aircon radiator (these will be running if the Aircon is turned on all the time), then there is a scavenger fan down directly in front of the engine itself, this operates from the sensor under the handbrake and should only normally come on when static or slow moving and the engine compartment heats up. Then the fan in the aircon system under the bonnet simply for blowing air thru the front of the van (actually there is also a fourth for the rear aircon as well!).

[Kernowel]

Thanks Geoff !

[Kernowel]

Can anyone tell me which connector, if any, is the one for the scavenger fan? Cheers!

[g8dhe]

Its the one on the right, black circular, it projects down into the engine housing to monitor the engine housing temperature, this then feeds the ECU which turns the fan ON/Off as required.

[Kernowel]

Cheers!