whats problem with heat had reverse flush and heat only lasts for a month each time

2001 VOLKSWAGEN PASSAT
165,000 MILES
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GONEWITHTHESUN
  • MEMBER
  • 1 POST
no heat ..had the heater reversed flush and it worked again each time but for only about a month or so before it stopped again. It just blew in cool air after that.
Dec 15, 2011 at 5:37 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Heater core could be clogged-up or the air blend door is stuck in cold position and also stuck open thermostat
Dec 15, 2011 at 5:41 PM
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