Why do I not have cabin heat?

1992 GEO METRO
56,000 MILES
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GREENCHEVYMALIBU
  • MEMBER
  • 230 POSTS
I had a leaking head gasket and figured that I didn't have heat because of the head gasket. I just replaced the head gasket, flushed the cooling system, new thermostat, flushed heater core. I have heat for a few seconds then it turns luke warm and then cold. I turn it off and back on a few minautes later and it's warm for a few seconds then cold again. What else could cause my heat for a second then nothing?
Nov 17, 2011 at 4:21 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the air blend door and actuator could be malfunctioning-
Nov 17, 2011 at 4:27 AM
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GREENCHEVYMALIBU
  • MEMBER
  • 230 POSTS
Is the actuator in the blend door assembly.
Nov 17, 2011 at 4:29 AM
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GREENCHEVYMALIBU
  • MEMBER
  • 230 POSTS
I had a plugged heater core. flushed with radiator flush and now its nice and hot.
Dec 18, 2011 at 9:44 PM
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