Fans
Author
Discussion

Allandwf

Original Poster:

1,773 posts

225 months

Monday 21st April 2008
quotequote all
Hi, Is there a control box for the fans, if so, which one is it? Mine are missing all the little labels.
Bled the coolant, loads of air, now ok at the top of radiator and the bleeds on the two metal pipes. However the fans sometimes come on simultaneously, and at others , the 1st then the 2nd ,if I have the revs up , as normal, checked connections at fans and at temp sender, seem ok.

QuiteQuietCerb

995 posts

253 months

Monday 21st April 2008
quotequote all
hi i think the control box is next to the ECU, passenger footrest

Steve E

3,598 posts

224 months

Monday 21st April 2008
quotequote all
I'm a newbie but.

I think they are controlled by the main engine management ECU.

So the fans would react to the engine temperature sender.

Engine temperature senders are often the cause of weird symptoms and general advice (on my other cars) is to change it before anything else.

But Cerb air locks have also been mentioned on here as being difficult to move at times.

Try the search button above?

shpub

8,507 posts

302 months

Monday 21st April 2008
quotequote all
There is no FAN ECU. The MBE ECU itself controls the fan switch on, including the sequence and the switching temperatures.

Allandwf

Original Poster:

1,773 posts

225 months

Tuesday 22nd April 2008
quotequote all
Hi Thanks,
Theres also two relays in the boot associated with them, going to check those too.