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Heater blows hot air only after the engine runs for 15 mins after starting

(2003 Toyota Corolla)
in Pleasanton, CA on December 24, 2011
Coolant level is normal.temp gauge is normal.once the car is heated up there is no intermittent proble
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Popular Answer
on December 24, 2011
could be clogged heater core or a slow thermostat or partially open.

on December 24, 2011
Can you feel the radiator core iteslf? Your thermostat could be stuck open or the heater core could have restricted flow. Call Jon at Dublin Auto (925)828-0243. He's a factory trained Toyota Tech and can check it for you.
of Contra Costa Smog and Repair on December 25, 2011
Heater blows hot air only, when the car has warmed up?? Are you looking for cold air as in air conditioning? It can be mechanical or electronic, low on freon or blend doors not opening. call 925-947-2555 Andre or Bart
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