Question about 1994 Mazda 929

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Heating / Cooling System Malfunction

I am not receiving any heat at all, heating gage is at normal.Mazda dealer said it was a bad thermostat, which was replaced twice. Still no heat.

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  • odog777 Sep 25, 2008

    I have a 95' mazda 626, same problem, but the heat only works while driving, I can let it idol for an hour and the windows won't even start to melt, but about 5-10 minutes avter I am driving the heat works great.

  • b pate Jan 21, 2009

    the heater just dont get hot enough. the heater hoses are getting hot. the blend doors move what is it?

  • Anonymous Apr 18, 2009

    my car is stuck in defrost mode i was told that there are a series of buttons to push on the panel does anyone kno what they are i could really use the help



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All mazda 929 have this problem when the coolant level is dropped
the heater core has no fluid in it since it ts off of the engine block . hence it cannot recive any coolant to heat the car. the best way to fix this is bleed the system of air . when filling coolant squezze the return hose with the cap on the rad it will force fluid bact to the core and push the air out
once you do this a few times you will see the rad fluid droped fill it up and run the car . this should solve this problem

Posted on Jun 16, 2009

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Get a complete cooling system flush and fill, you may need to also replace the heater core, blower motor, blower motor resistor, there is also possibility the thermostat might not have been properly installed or maybe wrong part, its not good but parts can be in wrong boxes with wrong part numbers.

Posted on Mar 03, 2013

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The engine coolant must flow through the heater core. Small rad inside the car. And if it is not, no heat.

Posted on May 15, 2008

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