2008 Suzuki Xl7 Heater Will Only Blow Hot Air Wile Motion Idle Stop Sign Light

2008 SUZUKI XL7
70,000 MILES
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My heater will only blow hot air wile it is in motion. WHen it is idle or a stop sign/light the air turns cold. The thermostat shows a normal reading. WHat could cause this
Dec 11, 2012 at 4:08 PM
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RASMATAZ
  • ✓Experienced Mechanic
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Check the thermostat and the coolant level
Dec 11, 2012 at 4:23 PM
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HOMER1967
  • ✓Experienced Mechanic
  • 875 POSTS
i would suspect a restriction in the heater core.or low coolant
Dec 11, 2012 at 4:23 PM
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