heater works sometimes mostly blows cold air

2000 BMW 740
132,000 MILES
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SCNAVIGATOR
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  • 3 POSTS
had a mechanic look it over he thinks it has air in the system. He 'burped' it and had heat for a little while but next morning again no heat. I tried burping but it didn't work. Help please I need heat for the winter.
Nov 18, 2011 at 3:38 AM
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RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
--Try replacing the thermostat and flush heater core and check the air blend door
Nov 18, 2011 at 3:45 AM
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JINYFOOT
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  • 21 POSTS
there are two cylinders like under the hood in the left side behind the engine one of them is out I think
I'm not an expert but I think so
Apr 7, 2012 at 5:59 PM
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