Heater does not work

217,000 MILES • 1.9L • 4 CYL • 2WD • MANUAL
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UPSET8
  • MEMBER
  • 1 POST
The heater starts to heat then after about ten miles it blows cold. Thermostat changed and flushed through but still starts hot then goes cold.
Dec 8, 2017 at 2:11 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,583 POSTS
It sounds like you have a plugged heater core or the circulation is weak. I would try flushing the cooling system and heater core using a garden hose to clean out any junk in the core.

Here is a guide that can help as well:

https://www.2carpros.com/articles/car-heater-not-working

Please let us know what you find. We are interested to see what it is.

Cheers, Ken

Dec 9, 2017 at 11:43 AM
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