Question about 2002 Chevrolet S-10

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The temp control for my 02 s10 wont blow full cool - the air is always somewhat heated. Is there an adjustment?

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You did not list if your truck has automatic or manual temp control, but niether system has any form of adjustment for the air blend door.

Posted on Aug 25, 2010

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Why my air condition blow cold air even when its not on


It blows cold air with the mode selector in what position. If it is on defrost and you have the temp adjusted to full heat than the a/c will be on to dry the air before it hits the windshield, this helps to remove the fog from the windows. If there is no heat coming out the vents than you need to check to make sure the blend door is working. You should hear a distinctly different sound out the vents when you turn the heat from full cold to full hot. Also check to see if the heater core is plugged. With the engine warm you should be able to feel little difference in the temp of the two hoses that go to the heater core. If one is hot and one is cool than there is a flow issue. Either the water control valve is bad, it is not being opened by the HVAC control head, the is a vacuum leak to the control valve or the heater core is plugged. Your vehicle may or may not have a valve that controls the flow of hot water to the heater core.

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1 Answer

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1 Answer

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PERHAPS SOMEONE HAS REMOVED THE THERMOSTAT. OR MAYBE THE HEAT CONTROL VALVE IS NOT OPERATING IN FULL RANGE. HOPE THIS POINTS YOU IN THE RIGHT DIRECTION. PLEASE LET ME KNOW. THANK YOU FOR USING FIX-YA. AND THANKS IN ADVANCE FOR ANHONEST RATING

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1 Answer

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