Dear all,

I have a Grande Punto Sport 2006 1.4 95CV, and I have noticed that if the cooling fan is on and then I turn the ignition off, the cooling fan switches off immediately.

Does anyone know why is this happening? Is it supposed that the cooling fan should be still on, right?

I have checked the related fuses and relays to the cooling fan motor, and all are ok.

Any clue will be appreciated.

Kind regards,
David.

That is a normal behaviour. The cooling fan motor is connected to the DC lines pannel that is powered only when ignition is turned on, not ont the all-time power pannel.

Thanks, Mike.

I also have a Fiat Punto 55 1.1 MK1, and I thought it should work the same way (the cooling fan remains on independently of the ignition key until the temperature is below the range).

Have a nice day.

Mike1alike said:

That is a normal behaviour.

Click to expand...

My 2009 1,4 8V will spin the fan after switching the engine/ignition off, when it's very hot.
Now what?

Maybe it depends on the year, version, ECU software, EU or non EU market or other factors we don't know.
The 2005-2006 is a start of production, those cars were full of various errors/flaws/issues, fixed later (most of them), there was a lot going on in the 2009-2012 era in that matter.

dvdsosa - try to test the fan via OBD2 (engine off, ignition must be on unfortunately), with FES/MES program. There is a option somewhere, 2 speeds.
If it works = it's "OK" (correct behavior for your particular car, year, version, market/country). If it's not reacting to the MES commands, it was "repaired" (after accident for example), bypassed somehow and it's not the ECU (or other module, doesn't matter now) controlling the fan, it's something else.

Also, look closely at the wiring, plugs etc. Is everything stock/original, any signs of repair, bodges, bypassed/added wires? A lot of insulation tape somewhere?

I think you are talking about the fan that cools the radiator under the bonnet (engine cooling system) and dvdsosa asked about the fan inside the car, the one that ventilates the hot or cold air inside the car. At least I think that's what he asked about, I did want to ask which fan are we talking about before my reply up here, I answered about the one inside the car considering that one was asked about.
The other fan, the engine cooling system radiator's fan does spin on hot days after turning ignition off. As you've mentioned, that can be tested with FES/MES. If it doesn't spin on hot days, it means it doesn't work on 1st speed and it only spins while engine is running, it spins on 2nd speed so it's noisier and the pressure inside cooling system is higher than normal. If you don't have a scanner, that is a good way to test it: after running the car, stop the engine and open the radiator's cap. If antifreeze comes out, the fan isn't working on 1st speed. Normal behaviour is just a hiss when you open the cap. The reason fan isn't working on 1st speed is the thermal fuse that is burned out. It is located on the fan, the electrical wires are connected to it's assembly. You can test it directly mesuring it using a multimeter, you power the line in and mesure if voltage passes after the fuse. Also dirty contacts could be at fault there, if the fuse is not burned out, but voltage is interrupted. So cleaning the contacts helps.

Thank you for your ideas and knowledge!

First, I checked with MES as GrandePunto PL indicated to me: Fan 1st speed and Fan 2nd speed are working with engine off and ignition key on (this is located in Actuators menu in MES). The car was cold at the moment of activating the fans.

The problem started when I realized anti-freezing was coming out by the cap. Then I realized the fan does not keep on if the engine is hot after switching the ignition off.

I have tested the blower thermal resistor, and it gives me 0.03 ohm. As far as I have seen in Autodata, this resistor is installed in the line for fan 1st speed. I have ordered a new resistor (55702180). As soon as I get it, I will install it and give an update on this.

Thank you very much to all of you,
David.

If the fan is working on both speed, as you've tested them, there is nothing wrong, you don't need to change the thermal resistor. The ignition key needed to be on, otherwise you cannot connect to ECU, so you couldn't use MES. If the thermal resistor needed replacement, the fan would not spin on the 1st speed.
On this weather, on my Punto, the fan never spins after I stop the engine. The coolant needs to be really really hot for the fan to spin after you stop the engine. And on mine it does spin in the summer if I use the AC. So, I think your fan is ok and working.
Anti-freeze coming out by the cap on the other hand, is a problem. And it could be the reason fan does not spin after you stop the engine, when it should spin (we don't know if that is the case with your engine). A lower level of anti-freeze makes differnt conditions than normal, air pocket can be present around the temperature sensor, so a non accurate reading of temperature is made.
Possible cause anti-freeze gets out: could be as simple as not tight enough cap, or faulty gasket, or even damaged cap. The first to are easy to see if that's the case. For the third: The cap has on it the extra pressure realease valve and if that is stucked closed, pressure builds up inside cooling system. It can even break a hose or some part in the cooling system, at yours turns out it found a way out around the cap. The pressure value on wich valve opens should be written on the cap. At Punto is 1 bar, I think on Grande Punto it is 1.4 bars. Check if at this pressure air passes throughout the valve, if not, a new cap is needed.

And one more thing about the thermal resistor: it doesn't need to have resistance, it just needs continuity. It is used to prevent the starting of a fire. Above 125 (I think is 125) Celsius degrees the resistor burns and stops the passing of DC through the line. If the passing wouldn't stop, the temperature would rise up and there would be a risk of fire starting.

Hi all, I recently took the car to the mechanic to solve the problem of the antifreeze coming out not only by the cap (I changed it with a new one) but also by the cooling hoses.

The car does not overheat but keeps losing anti-freezing. I think the cylinder head has one small gap, but the mechanic thinks it is possible that the water pump is failing, though it is yet at its half-life. The antifreeze has no signs of oil.

Any ideas are very welcome,
Kind regards, David.

Hi all,

Finally, I solved the problem.

The problem was in the small diameter return hose that goes from the thermostat to the expansion tank. It was semi-blocked, so the water return was not continuously flowing, thus this caused it to lose water like a pressure cooker with no outlet. I clean it and now I can see a continuous return of water by the small "window" that the expansion tank has.

Now everything is perfect.

Thank you very much everyone for your ideas.
David.

dvdsosa said:

Dear all,

I have a Grande Punto Sport 2006 1.4 95CV, and I have noticed that if the cooling fan is on and then I turn the ignition off, the cooling fan switches off immediately.

Does anyone know why is this happening? Is it supposed that the cooling fan should be still on, right?

I have checked the related fuses and relays to the cooling fan motor, and all are ok.

Any clue will be appreciated.

Kind regards,
David.

Click to expand...

Why is the cooling fan on. Really unless you are sitting in traffic and the car is not getting any airflow the fan wouldn't normally be expected to come on, and even then it can take a while for the engine to heat up enough for the fan to come on.

I notice there is a Spanish flag beside your name? Are you running air-conditioning all the time, because if you are then the cooling fan is likely coming on to keep air moving over the condenser for the aircon and is not needed at all as soon as the engine is stopped which is why you might find the fan always goes off when you stop the car.
Other than this the fan should rarely be coming on.