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Fan Trouble

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#1 malsmini


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Posted 11 September 2005 - 07:35 PM


Have just bought my first mini - 1997 Mini Cooper and have noticed that the fan comes on really quickly and doesn't turn off until the engine is switched off - I would really appreciate any suggestions as to what the problem could be and how to fix it!

Many thanks

#2 binge


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Posted 11 September 2005 - 07:39 PM

The sensor is probably knackered.

I bought my mini second hand and the previous owners had unplugged the fan because It came on early.

Take the heat sensor / switch out (I think its at the bottom of the radiator just behind the grille on the right hand side.

Get a new sesor, Fit it, Jobs a gud`un.


Edited by minicooperman, 11 September 2005 - 08:46 PM.

#3 BabyBek


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Posted 11 September 2005 - 08:40 PM

I have a 97 Cooper and to be honest its quite tempremental...

When i first bought it the fan used to come on all the time, now it doesn't so much.
It may be the ECU getting used to the way u drive and handle the car... or the type of driving you're doing eg alot of stop start

#4 malsmini


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Posted 11 September 2005 - 08:49 PM

Thanks for response,

I spoke to the last owner and she had the same problem so that rules out driving sensitivity, will have a look for the heat sensor!

#5 Sprocket


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Posted 11 September 2005 - 10:54 PM

Edit :nugget:

Just noticed that its a 97 cooper so this may not be relevant if tis the twin point. This information is for the single point

Make sure there is enough water in the rad. Oh and the ecu does not control the fan, it is down to the thermostat in the bottom corner of the rad at the front of the engine bay. Thermostats normaly fail in two ways, ether stuck on or stuck off. If the fan is off then swiches at high temp, then the water is allowed to cool by switching off the engine. If the switch resets itself then its fine. The reaction of the stat may be sluggish due to sediment at the bottom of the rad. The coolant should be green in colour. Any sign of rust then it needs flushing out and replacing( should be done every two years)

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