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how can i fix my coolant fan on my peugeot 405?

the coolant fan stays on all the tim when driving, and stays on for a few minutes when engine switched off.the car is a peugeot 405 gls diesel
terry, March 2007
When the fan is operating (and shouldn't be) disconnect the lead to the thermostatic switch which I believe is half way up the radiator nearside.

WATCH YOU DON'T CATCH ANYTHING IN THE FAN'S BLADES.

I would suspect this thermostatic switch is faulty or current is managing to bypass it somehow.

Steve, March 2007
link Click here to see other fixes for Peugeot 405.