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It can be several things including the cont valve,if it has one, stopped up heater core, or thermostat. Have it checked out and don't throw parts at it as this can be expensive.

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โˆ™ 2014-02-12 16:45:11
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Q: Could it be a heater control valve problem if a 1992 Sunbird 2.0l SE is not throwing any heat no leaks and fluid is up?
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