Technical Another overheating question!

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Technical Another overheating question!

misswolves

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Mar 25, 2017
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Just got my little Seicento and I love her. I have sorted out the usual niggles such as brakes, boot light & headlights however she has now started overheating. The 'I have overheated' light (!) came on accompanied by clouds of steam. Topped her up & drove home carefully. The fan spins freely so is not seized however it seems to have a 14vdc supply to it when I would expect 12vdc? The thermostat works as the top hoses go hot & water goes back to the expansion tank however I flushed it through anyway. I disconnected the green plug by the inlet manifold & linked it out but instead of putting on the temperature light I got the EML & error P0115 engine coolant temperature?
In short is there another sensor/plug that controls the indicator lamp & possibly runs the fan?
Is 14vdc the correct voltage for the fan & if so is the fan then dead?
Can the fan be removed with radiator & bumper insitu?

Thanks in advance!!:)
 
Just got my little Seicento and I love her. I have sorted out the usual niggles such as brakes, boot light & headlights however she has now started overheating. The 'I have overheated' light (!) came on accompanied by clouds of steam. Topped her up & drove home carefully. The fan spins freely so is not seized however it seems to have a 14vdc supply to it when I would expect 12vdc? The thermostat works as the top hoses go hot & water goes back to the expansion tank however I flushed it through anyway. I disconnected the green plug by the inlet manifold & linked it out but instead of putting on the temperature light I got the EML & error P0115 engine coolant temperature?
In short is there another sensor/plug that controls the indicator lamp & possibly runs the fan?
Is 14vdc the correct voltage for the fan & if so is the fan then dead?
Can the fan be removed with radiator & bumper insitu?

Thanks in advance!!:)

The fan is controlled by the ECU. The battery should be giving 12v, although that will be in the region of 13.8 volts with the engine running. There is nothing in the car to boost the voltage when the engine is not running.

The ECU switches the earth. Apply a straight earth to check the fan working or not.

Did you bleed the system after it boiled?

Was there any loss of fluid between weekly checks?

Yes the fan can be wiggled out with the radiator in.

D
 
Thanks very much for the reply. Yes I topped up & bled it all when I flushed it through plus I had no loss of fluids before. It sounds like my fan is dead then if I am getting the 14vdc or so but nothing is happening. Time to pull the fan off then!!

Thanks again.
 
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