Question about Peugeot 405

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106 w reg electric problem

2000 model with alley head, multi injection. water temp light stays on even when engine is cold,and electric fan runs constantly, even when ignition turned off and key removed. changed both sensors on head for new ones. no change.

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  • andreselvado Apr 20, 2009

    checked the fan. all i can see on it is a yellow relay under a plastic cover on the passenger side of the fan. pull it out it stops. if i disconnect the battery, then reconnect, nothing happens. can even start it. temp light stays illuminated, until i turn the ignition off. then the fan starts and stays running.

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If you changed the sensors on the head , then the fan temp sending unit on the fan assembly is faulty. it's sending a false reading to the computer therefore keeping the fans running replace this and the proble will be resolved

Posted on Apr 20, 2009

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