Charade j reg 91 - radiator fan not kicking in when driving

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Charade j reg 91 - radiator fan not kicking in when driving

Hi all,

I have a 91 J Reg Charade 1.3. Im no mechanic, so a little patience with me please .... !!

I have a problem with it overheating, but the strange thing is, it only overheats when I'm actually driving it. If i'm on a forecourt or whatever, and get it up to temperature, the fan kicks in when it's supposed to, but when I'm off and about, it just keeps getting hotter, and boiling the water!!

My uncle has had a look at it for me, and he thinks its a simple thing, but he can't pinpoint it.

any ideas??

Thanks

Gary