[Peugeot-L] 1991 405 Mi16 cooling system problems

From: John <peugeot505turbo_at_hotmail.com>
Date: 05/21/06


My 405 Mi16 now thinks it is overheating and thus the fans now run all the time in high, and the A/C will not operate. The temp gauge is in the normal range but the 'stop' light is on, and the temp gauge is illuminated. The oil temp gauge also reads normal, no light indicating low oil pressure etc. I know it is not overheating because it does it even when sitting overnight. I found two temp sensors on the side of the t-stat housing, one with a bosch style connector, the other with a single wire connected to it. I seem to remember my 405 S having a third one though, on the back of the head. I only see two on this car. One other side note, the heater flap motor was giving problems so I disconnected it, since here in Miami all you really need is A/C. Is it possible that another circuit in the climate control computer went bad and is causing this? I know there is a fan control box by the fuse panel but I think the climate control computer also ties into it.

Thanks in advance for your help.

John
89 405 S
91 405 S
91 405 Mi16

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