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2006 Mazda MAZDA6 Grand Sport i 4dr Sedan Auto

2006 Mazda MAZDA6
Trim Info:
Front Wheel Drive, 4 Door Sedan, Midsize
24 mpg city / 31 mpg hwy
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January 27, 2009, 5:59 am


Question: Mazda 6 heater not working properly

The heater in my Mazda 6 only blows hot air when the accelerator is depressed. When I take my foot off the gas at a stoplight, the air becomes cool within 5 to 10 seconds. It gets hot again within the same amount of time once I accelerate again. If I put the car in neutral and give it gas while sitting still the air blowing out stays hot. Any thoughts?

January 28, 2009, 4:37 pm


Try checking your RADIATOR for the proper fluid level. When you drive, the water pump is circulating the water UP TO to heater core. When stopped, it isn't pumping the water high enough to enter into the core. If unchecked, it could burn up your engine due to lack of water. Some mechanics claim that the NEWER raditor fluid seems to evaporate...strange.

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January 28, 2009, 4:37 pm

Darren L

Thermostat stuck open more than likely. Or not enough coolant/water in radiator/

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