HEATER KIND OF WORKING

  • Tiny
  • nicoler04
  • 2007 Saturn Relay
  • 68,000 miles

In my 2007 saturn relay my rear heater works great, but the front heater only blows cold air. There is plenty of coolant, the heater and a/c works in the back of the vehicle, and the front is cold with the heater or ac

Sunday, January 8th, 2012 AT 9:26 PM

5 Answers

  • Tiny
  • jacksprat
  • Member

Check the A/C control unit for fault codes. Feel the coolant hoses going to the heater radiator, are they getting hot? If not you may have an air lock or a coolant circulation problem ( check water pump).

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Sunday, January 8th, 2012 AT 9:45 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,244 posts

Just to add to this one the first thing I would check is if both heater hoses are getting really going into the fire wall thats your starting point. If they are really hot then you have a blend door issue. Let me know what you find.

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Sunday, January 8th, 2012 AT 9:58 PM
  • Tiny
  • nicoler04
  • Member

I have one hose hot and one hose cold

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Monday, January 9th, 2012 AT 9:17 PM
  • Tiny
  • jacksprat
  • Member

Check your heater radiator for a blockage or restriction

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Monday, January 9th, 2012 AT 10:15 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,244 posts

Flush the heater core out make sure water flows freely in on nipple and out the other one.

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Tuesday, January 10th, 2012 AT 12:50 AM

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