fans on continuously - HDi engine

[Albert T Cone]

Hi folks,

I know this is sort of OT, but this group is somewhat livelier than the Citroen one, and since the cars are pretty similar (bar the suspension), I thought I'd ask....

The fans on my Mum's HDi engined Xantia are switching on continuously, even with the air-con switched off, and the engine cold. The water temp gauge does work, so the sensor that uses is fine. The aircon needs regassing, and is left switched off. Any suggestions for what might be the cause of this. I know it isn't a major problem in itself, but I wonder if there might be a temp sensor gone wonky somewhere, or something.

Any help muchly appreciated.

Cheers,
Albert

 

[Ívar Pétur Guðnason]

Hi Albert

A common (temporary) remedy when the fan switch malfunctions is to disconnect the plug and bridge the teminals with a wire. The switch is usually on the radiator - check whether you won't find the disconnected plug nearby. Another possibility is that the switch has failed, but I have never come across one that failed in this fashion. Has anyone?

Ivar Petur

 

[Albert T Cone]

in "Ívar Pétur Guðnason"

Hi Albert

A common (temporary) remedy when the fan switch malfunctions is to disconnect the plug and bridge the teminals with a wire. The switch is usually on the radiator - check whether you won't find the disconnected plug nearby. Another possibility is that the switch has failed, but I have never come across one that failed in this fashion. Has anyone?

Ivar Petur

Hi Ivar,

Right, I'll have a look at the fan switch. I don't _think_ it has been disconnected - I'm sure I would have noticed, but I'll check. I'll test the switch properly in any case.

Thanks for the reply - very helpful.

Cheers,

Albert