After installing new thermostat heater blows cool air

2005 MAZDA TRIBUTE
200,000 MILES • 3.0L • 6 CYL • 4WD • AUTOMATIC
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TIMBURCHFIELD
  • MEMBER
  • 1 POST
Put a new thermostat in and does not get warm, blows out cool air.
Jan 5, 2018 at 9:26 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good morning.

Some possibilities

1. heater core clogged with debris.
2. air in the cooling system.
3. blend door actuator.

Roy
Jan 6, 2018 at 4:25 AM