406 radiator fan runs on

[Juper Wort]

HI
1999 406 2.0

Radiator fan ran on after car turned off. Battery ran flat. I had to disconnect battery every time i parked. did a 50 mile run, didn't help. Engine temp didn't go above 90 on the dash guage. A bit of fiddling about, squashed a few hoses to maybe move an air bubble, removed a couple of leaves.

Now seems ok.

Should i be looking for a thermostat, if so, where is it. Would alot of rain & puddles mabe cause a short in a sensor somwhere ?

maybe someone could help.

 

[MICHAEL ROCHE]

Juper
Try the fan control relays, there are three of these if you have a two fan model. They are controlled by the ECU which reacts to a control thermostat. On my 406 I believe they are located under the wheel arch passenger side. Haynes manual shows a wiring diagram for the three relays but the method of energising differs on some models from the Haynes manuel.
Mike

 

[Juper Wort]

Thanks
Will take a look
Knowing that most of the puddles are in the gutter side of the road & beyond, I suppose its possible that water may have got in that side & messed about ?

JW

 

[s.parcel]

this can be quite normal dont worry about it , it should stop quite soon after you stop the car.

 

[Malc (3)]

But it isn't normal is it? The fan ran on and flattened the battery is what the post said.