When in heat position blower blows cold air
Sounds like either the heater control valve isn't opening or you have a very clogged heater core. The heater control valve on most newer cars ( newer = 1995 or newer) is controlled by a vacuum valve. It could be as simple as a vacuum leak going to the control valve. If it is found to be the heater core is clogged, you should send your car to a professional as changing a heater core is a VERY hard job to do for a home mechanic.
Good Luck
Make sure you have enough anti-freeze if you dont have enough it wont push through the motor to your heater core make sure the radiator is full and your resivor is full if its not that you need a new thermostat because your thermostat is stuck wide open these are cheap usually between 5-15 dollars and they are easy to replace just about any backyard mechanic can replace one sounds like you got a cheap easy fix be careful cause alot of shops and dealerships will over charge you this is a cheap part and only takes a few minutes to replace
SOURCE: Heat/AC blower not blowing air
heck the blower fan speed control resistor, it is located near the blower motor, they are cheap to replace and the most common cause of this issue
SOURCE: Car Heater Not Working - Blowing Cold Air
also check to see if tube that runs your climate door is not pinched or broken. the vaccum tube that runs the climate door is behind and under the battery. i had same problem a year ago and the tube was partially cut. i fixed it by cuttinga piece of aquarium tubing and spliced it back together. one other thing.....check to see if your radiator over flow cap is tight. your cap maybe bad and or cracked this would also cause the problem.
SOURCE: 2006 grand prix heater only blows cold air. both
Sounds like the temperature blend door actuator may be bad or the vacuum hose to it is disconnected.
Poor Heater System Performance
CAUTION
Check all fluid levels and adjust as needed, before operating vehicle for extended periods at idle.
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Heater blows cold?
http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
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Heat blows cold on drivers side and hot on passenger side?
http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html
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No heat, blower blows only cold?
http://technoanswers.blogspot.in/2012/02/no-heatblower-blows-only-cold.html
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These will help.
Thanks.
To troubleshoot this types of problem,click the link below
:----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the
issue.
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Engine Overheats and heater
blowing cold?
http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
---------
Heat blows cold on drivers
side and hot on passenger side?
http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html
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No heat on car?
http://technoanswers.blogspot.in/2012/02/no-heat-on-oldsmobile-silhouette.html
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Heater blows intermittently and temp
gauge goes erratic?
http://technoanswers.blogspot.com/2012/01/heater-blows-intermittently-and-temp.html------------Heater blows cold?
http://schematicsdiagram.blogspot.in/2012/02/heater-blows-cold.html
---------Car heater blowing warm, but not
hot air?
http://schematicsdiagram.blogspot.com/2011/12/car-heater-blowing-warm-but-not-hot-air.html--------
Heater/AC blower motor not working?
http://technoanswers.blogspot.in/2012/02/heaterac-blower-motor-not-working-on.html
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A/C, heater, defroster fan, not
working?
http://technoanswers.blogspot.in/2012/02/ac-heater-defroster-fan-not-working.html
Heater problem?
http://technoanswers.blogspot.in/2012/02/heater-problem-on-isuzu-trooper.html---------
This will help.Thanks.
To troubleshoot this types of problem,click the link below
:----http://howtobyme.blogspot.in/2012/02/heater-blows-only-from-defrost.html
--------Go through the procedure to confirm the
issue.
------
Engine Overheats and heater
blowing cold?
http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
---------
Heat blows cold on drivers
side and hot on passenger side?
http://schematicsdiagram.blogspot.com/2011/12/heat-blows-cold-on-drivers-side-and-hot.html
-----------
This will help.Thanks.
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its not a clogged heater core if it was the antifreeze would not flow continuous this would cause your motor to over heat
its not a clogged heater core if it was the antifreeze would not flow continuous this would cause your motor to over heat
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