Question about 1990 Mazda MX-5

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Heater light on dash what is it - 1990 Mazda MX-5

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Hi. The heater light comes on when cat.converter which is part of the exhaust gets to hot, or the sensor which detects the temperature is faulty.
So the cat.could be blocked or its a false signal from the sensor screwed into the cat.
hope i`ve been of some help good luck
john (S.Wales)

Posted on Apr 04, 2011

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