Hi there,

I have a 2010 100hp, my second one. I'm looking for some help.

The engine cooling fan isn't kicking in. The car will get too temp and if idling in traffic etc the temp gauge will start to creep up. The heating will blow hot or cold with no problems regardless of engine temp. Once the temp gets above halfway, if you give the fan a push it will run for a short while but rather half heartedly. This makes me think its the fan and not the thermostat at fault.

I maybe completely wrong of course! Any help would be much appreciated.

Thanks.

I am confused


are we talking about the engine fan that should be automatic. And stops over heating


or the interior blower to blow hot air around the cabin

I would be very (read: VERY) carefull with my hand near the fan at any time.
Halfway up the gauge is perfect. I had to run my 100 Hp very long at idle (and even had to give some throttle) to get the fan to kick in when I changed my thermostat.

gr J

Sounds like the fan could well be knackered. Measure for 12v at the connector when it should run.

is it going above 1/2 way

my 1.2L will never kick the fan on if the heaters are on at this time of year.

don't risk driving the car if its going to 3/4 even if it turns out to be nothing

be careful when working on the fan. It can spin up fast even with the ignition off.

I don't have the wiring for the 100 hp

normal 1.2L has two separate speeds powered separately via there own fuse and relay, both relays are controlled by the ECU one going through a resistor.

Does the fan spin smoothly by hand before the car is started

I would attach a 2W test light to the live side of the fan and earth and see if it lights when the fan should be on. If it does it likely to be the fan motor. You can try powering it directly at around 6V.

Use a test with to put 12V direct to the fan. Obviously keep your fingers clear so might need to fit a wiring connector to do it safely.

If it spins you too know the motor is ok.

Use an IR thermometer on the engine thermostat. That will tell you the temperature of water leaving the engine. Should be around 85°C.