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04 Mazda with heating problems
Hey folks, I'm new to the site. I have a 04 Mazda 3 with heating problems. I came across the post below from this site. There was no response to his post. I would really like to find out if he fixed his problem or not. My problem is exaclty as he posted, right down to the gurgling.
Would any of you have any ideas that I can try. Hello all. First time on the board and I am looking for some assistance on (the only) problem I have had with my 2004 Mazda3s 5 door. In a nutshell, the car blows cold air at idle even after the engine is warmed up. Living in New England, that means that when you start your car to warm it up, it will always blow cold air until you begin driving, no matter how long the car has been running. At 1700 RPM's or above, the heat blows normally but when you stop in traffic or at a traffic light, it simply blows cold air again. I have had Mazda look at it and they said it may be a blown head gasket ( a tiny head gasket leak) but when a test was done running 170lbs of air through each sealed cylinder, no bubbles were observed in the coolant recovery tank. Also, I haven't noticed any coolant los or white smoke typically associated with a head gasket problem. I hear air gurgling through the HVAC system when I am driving and I have had the cooling system "burped" three times to remove any air pockets if that matters. The car was in an accident before I bought it, and I am cool with that and all since it was fully disclosed, and it now has 44K miles on it. I do know that the water pump was replaced, or I was told it was, and I have had every hose checked and rechecked as well as a new thermostat. Also, and very important, the engine does not overheat or even run hot. The gauge is where it is supposed to be. |
hi
Originally Posted by pedi
(Post 406691)
Hey folks, I'm new to the site. I have a 04 Mazda 3 with heating problems. I came across the post below from this site. There was no response to his post. I would really like to find out if he fixed his problem or not. My problem is exaclty as he posted, right down to the gurgling.
Would any of you have any ideas that I can try. Hello all. First time on the board and I am looking for some assistance on (the only) problem I have had with my 2004 Mazda3s 5 door. In a nutshell, the car blows cold air at idle even after the engine is warmed up. Living in New England, that means that when you start your car to warm it up, it will always blow cold air until you begin driving, no matter how long the car has been running. At 1700 RPM's or above, the heat blows normally but when you stop in traffic or at a traffic light, it simply blows cold air again. I have had Mazda look at it and they said it may be a blown head gasket ( a tiny head gasket leak) but when a test was done running 170lbs of air through each sealed cylinder, no bubbles were observed in the coolant recovery tank. Also, I haven't noticed any coolant los or white smoke typically associated with a head gasket problem. I hear air gurgling through the HVAC system when I am driving and I have had the cooling system "burped" three times to remove any air pockets if that matters. The car was in an accident before I bought it, and I am cool with that and all since it was fully disclosed, and it now has 44K miles on it. I do know that the water pump was replaced, or I was told it was, and I have had every hose checked and rechecked as well as a new thermostat. Also, and very important, the engine does not overheat or even run hot. The gauge is where it is supposed to be. |
It sounds to me like you've got air in the cooling system.
The air is heated by coolant. If the system has air in it, you won't get any heat until you get on the gas and circulate the coolant. I'd burp it, and hope the problem doesn't resurface. Wait till the car's cold, then take off the radiator cap and fire it up with the heater on HIGH. Give the throttle a couple stabs and keep topping off the coolant. Once the car's warm, hopefully the air will have been purged out. What's that radiator cap look like? Old and crusty? A new one's cheap and may help solve your problem. |
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