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Crazy temperature readings.


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I have a 2007 rav 4, fan running from the start, (not air con), temp reading in the red after about a minutes running. Took out thermostat ,placed in hot water and it struggled to open a fraction, about 3mm, bought new one, placed it in water next to old unit and it opened wide, result.! Fitted it to car and no different, showing 420 deg f and needle into the red and the actual water temp around 80 f, with the cooling fan running constantly the coolant was cool. I guess there is a sensor somewhere telling lies to the control unit, but where would it be please.?

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  • FROSTYBALLS changed the title to Crazy temperature readings.

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