Mechanics

HEATER WORKS INTERMITTANTLY

2003 Honda Civic

2003 Honda Civic 4 cyl Front Wheel Drive Automatic 88000 miles

would a thermastat make the heater not work at stop lights heater hoses one very hot the other not so hot
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Dwerner
October 27, 2009.



Hi dwerner,

Without the thermostat, the heater might not work correctly when the idling speed is low.

Check if the heater valve is opening correctly.

KHLow2008
Oct 28, 2009.