Heat

Asked by GuruXKZ4Z Nov 06, 2018 at 08:43 AM

Question type: Maintenance & Repair

My son heat isn't blowing out hot air, before
he got a new thermostat it was blowing out
some warm air but now since he replaced
the thermostat it's blowing out cold what to
do.

1 Answer
103,225

KenF answered 6 years ago

Did he replace the coolant and bleed all the air out of the cooling system? Is there good flow to the heater core? From the water pump? Some vehicles have a heater control valve that allows coolant flow to the core. You don't state what vehicle you have, but if it has a heater control valve then check it.

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