Question about Air Conditioning and Heat for Dodge Nitro

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Heating not working

Hi just purchased 2009 dodge nitro have had to flush out radiator as there was not enough water and no anti freeze was present have sorted this problem but for some reason the heating does not work have purged air from system as far as I can see but still no luck don't know what to do next is there possibly a vent to pipe work that can be used to get rid of any air that might help

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  • Terry Ampleford
    Terry Ampleford Dec 28, 2013

    Hi Chico thanks for trying to help only owned car 2weeks was told radiator had just been changed which looks true but system had not been flushed or anti freeze added so have dealt with this and monitored levels and topped it up but yes when topping up and switching engine of when done there was a large bubbling sound in engine would just like to sort it with the cold weather coming



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I can think of a couple reasons: 1 thermostat stuck,2 blend door mal function,3 heater core is stopped up. Does it overheat when driving? Or after a trip and you park do you hear a bubbling sound from under the hood? Need more info

Posted on Dec 28, 2013


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The reservoir is actually an expansion tank. Don't forget the anti-freeze! It not only protects the system from freezing, but keeps the water clean and sweet.

you keep filling the radiator until the thermostat fully open and the bubbles stop. Stop the engine, replace the radiator cap and then fill the reservoir to the line. There are videos 'burping a coolant system'.

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The whistling noise is steam. The problem is you never attacked the source of the problem. What you need to do now is drain your radiator completely at opening T-spicket at the bottom of the radiator. While you drain with engine off, run your water hose on top, to flush out the radiator. Then run to the Auto store and buy "radiator flush" -- follow directions. After flushing out the radiator flush, close the T-spicket, and fill with NEW anti-freeze. By enough to fill to the very top. Mix the anti-freeze with water per instructions to your environmental weather.
Buy a new radiator cap which could have caused the problem in the first place by not allowing the correct pressure to blow off. Being a 2000 car is a little early for radiator problems, but an incorrect anti-freeze solution causes radiators to fail prematurely.. Better to have more than less because anti-freeze keeps the radiator from corroding.
Your radiator never cooled the water sufficiently, and boiled much of the water out, hence it got so hot that it would melt the water tank. The Thermostat could well have been the cause because it got corroded from the inept ant-freeze mixture. Did you find rust on the Thermostat ? If so it was the case. If not the radiator has lost cooling either by low water or the cores have become plugged up, in that case you will need a new radiator. See if the flush loosens the rust within the cores before buying an expensive radiator. Check the water hoses if leaking cooling. Run the car allow the engine to become hot before accepting that your water hoses are fine. Because heat expand everything, and may not leak until after the expansion.

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Ae you trying to get your Heater to work, or are you having problems wit it "over heating"?? Could be your heater core rusted out, or your thermostat not opening?? Depends... Good Luck!!

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1 Answer

Heater blows some warm till I turn the fan on then it gets cold

put a radiator flush in the expansion bottle run for about 20 miles .that will clean the core of your radiator .and the core of your heating of rust and should change your thermostat .after draining it. then refill with 50/50 mix of anti freeze.then put your heating on full .to bleed them both. run the engine on tick over.till water is getting hot .then refit the cap.

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Remove the radiator cap.
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Drain fluid into a container.

If no fluid present, then refill radiator and perform a system pressure check.

Once all fluid has been drained, and any faults repaired, then refil with a 50-50 water to anti freeze mixture.

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I am flushing my radiator today, and need to know how much anti freeze my car should need. it is a 2003 Dodge neon SE.

It will need as much as it takes, which is impossible to tell depending on how you flushed it.
But your whole system takes more than 2 gallons, and since you want a 50/50 mix you know you will need more than one gallon of antifreeze. So you need to start by purchasing 2 gallons. If you have left over, it does not go bad. And if you do not quite have enough, you can probably add a little extra water because you probably did not flush all the antifreeze out.
Once you run it, then next time it will need more again after the heat bleeds the air out.

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Refill with 50-50 anti-freeze and water

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