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Heater blowing cold air

Heater just blowing cold on my Toyota 1997 previa any idea what could be the cause?

1 Answer

kevingsuzuki

Toyota Master 752 Answers
Posted on Nov 02, 2013

kevingsuzuki

Toyota Master

Joined: Jan 23, 2010

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Check antifreeze,coolant,thermostat could be seized controls when engine is hot for heat

5 Related Answers

Anonymous

45 Answers
Posted on Nov 13, 2008

SOURCE: 1997 audi A4 heater blowing cold air

You will have to change the heater core. 9 out of 10 times, when the heater is not heating the air, it is a bad heater core.

Anonymous

71 Answers
Posted on Nov 22, 2008

SOURCE: heater doesn't work

Sounds like the heater core is stopped up. Try removing the heater hoses and backflushing the core.If this doesn't work replace the core.

Anonymous

651 Answers
Posted on Jan 04, 2009

SOURCE: heater blowing cold air

squeeze the hoses to get any air bubbles out and refill coolant as necesary. are you sure you put thermostat in the right way? may be backwards. also may be your sensor.

Johnny Brown

5763 Answers
Posted on Oct 06, 2009

SOURCE: Toyota Celica gts 2000 blowing cold air when heater is on.

nothing try back flushing heater core, they clog up due to litle water preasure,you might want to flush cooling system if you already havent, hope this hleps.

Dean Hornberger

11 Answers
Posted on Aug 29, 2012

SOURCE: Temperature gauge fluctuates and the heater blows cold air

Definitely check your fluid level in your radiator. Top it off all the way. I've seen that happen multiple times on cars that were low on anti-freeze. If that doesn't work try replacing your thermostat. It's cheap and the easiest place to start if topping off the fluid doesn't get you fixed up.

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