I have intermittent heat blows hot then cold

Tiny
DANIELINGRAM
  • MEMBER
  • 2000 PONTIAC GRAND PRIX
  • 13,000 MILES
I have intermittent heat blows hot then cold
Tuesday, February 19th, 2013 AT 1:06 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
Check and make sure the engine coolant is full. If it is, you need to check if both heater core hoses are getting hot. If they are not, then flush the heater core. If they are hot, chances are there is an issue with the blend air door.
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Tuesday, February 19th, 2013 AT 2:15 AM

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