You need to fix the coolant leak, then refill and bleed cooling system, then you will get heat and cure overheating problem too
SOURCE: 2008 saturn Aura coolant leak
I bought a 2008 aura with 32k miles on it in 2013.. from a Honda dealer. the car looks new thought I was getting a great deal. Well I now think the former owner dumped it because of the over heating issue. looking for the problem I notice the radiator and reservoir have been replaced. I had the thermostat replaced and it was fine for the short drives my wife makes. I drove it to work this week (200 mile round trip) going up steep grades and it over heated. got to work and added a gallon + of antifreeze and kept letting air out of the reservoir as it circulated. I noticed a puddle of water from the tail pipe. Now I pretty sure it's the head gaskets although there is no water in the oil but the change oil soon is laminated. could mean the antifreeze contaminated the oil but the water portion has burned off with the excessive heat. what ever the case it is obvious to me considering the other post and other sites such as saturnlanda, the consumer is screwed do to a defect that GM is going to ignore.. I will probably resurface the heads and see what happens... It's not the radiator or the reservoir I can insure you of that!. but a slow leak into the exhaust manifold that's why you smell the antifreeze burn off and when the fluid level becomes low the heater is cold because the thermostat has no water to sense the water temp to open to flow to the heater core and the engine block. I now wonder as I am posting this if you were to add stop leak into the radiator if it would temporarily fix the problem.. maybe that's what they been doing under warranty.. No that me being paranoid, right!
SOURCE: how do I fix my 2007 Saturn aura heater not blowing hot air
Could be the blower motor and also the blower resistor.
http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating
while driving?
http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater
blowing cold?
http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html
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Car overheats and Air blows
hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating?
http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and
transmission starts slipping?
http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.
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