What causes the heater to blow cold air?

Tiny
DAN2002
  • 2001 KIA OPTIMA

Have no heat. The heater blows cold, have changed the thermostat and still blows cold. The top heater coil hose is hot, the bottom one is cold. I believe there is a blockage. Can anyone help me?

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Saturday, January 7th, 2012 AT 10:35 PM

1 Reply

Tiny
SATURNTECH9
  • EXPERT
  • 30,281 POSTS

Sounds like the heater core is blocked I would start by seeing if its clogged.

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Saturday, January 7th, 2012 AT 10:47 PM

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