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Author
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Topic: How To Troubleshoot NO HEAT
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huttoboy
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Member # 7813
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posted
 
 
Summer a/c worked fine (still does)...but now no heat from dash. when I first select "heat" I get maybe 10-15 secs of warm air then it goes cold (this is at freeway speeds) so I would think the heater core is good....I was told that it might be the BLEND VALVE, but with the Cragen tech manual I have, I can't find any info on blend valve. I did replace the FAN in this summer....could I have done something wrong there. It was pretty straight forward, I bought the fan and housing from junk yard and replaced as a unit......TIA..wearing a big jacket, Hut!
Posts: 95 | From: Sacto | Registered: Jul 2007
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huttoboy
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Member # 7813
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posted
SORRY SORRY......1989 LX 5.0 standard.
Posts: 95 | From: Sacto | Registered: Jul 2007
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Captain Obvious
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Member # 7842
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posted
probally a cloged heater core. that happened to me before, motor was hot but no heat was coming through. what i did was pull both heater hoses from the fire wall, took a garden hose and alternated between the two core lines, doing that flushed out all kinds of stuff from the core.
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It's NOT illegal. It's just frowned upon, like masturbating on an airplane.
Posts: 1976 | Registered: Aug 2007
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92stangLX
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Member # 3252
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posted
Check your thermostat. If it is stuck open your heater will be cold.
Posts: 5302 | From: San Francisco | Registered: Sep 2003
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