PH1 cooling fan stays on

[bungers]

Had this twice recently - only seems to happen if the battery is low (car had been sat for 4 months before I bought it and needed a jump). The cooling fan will stay on permanently until the battery is completely flat. If I charge it fully this doesn't happen. Coolant temp looks normal on the dash (starts cold and rises up to just below half way at the expected rate).

Any ideas?

 

[da rok]

there are two coolant sensors, one on the block and one on the radiator, might be a bad connection on the one on the radiator... or a bad relay

 

[bungers]

there are two coolant sensors, one on the block and one on the radiator, might be a bad connection on the one on the radiator... or a bad relay

Thanks for the reply da rok. That's interesting there's two sensors, I'll take a look the next time I'm under the bonnet. Out of interest is the relay in the box next to the battery and if so do you know which one?

 

[da rok]

yea the relays are in the box next to the battery, its one of the small black ones, just pull them out and clean them or swap around and see if the problem goes somewhere else...

 

[bloke]

There's only one cts. Check the resistor for the fan speed or just unplug it and see how it goes.