Question about 2004 Chevrolet Monte Carlo

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No heat changed thermostat, radiator is full flushed heatercore,heatercore lines seem to be warm. Still no heat whatsoever.

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  • dandrewswrig Oct 28, 2008

    My heater is not getting hot. I can prewarm my car but still when in heater mode (both levels on red all the way to the top) the air still blows cold or equal to temp outside (kinda as if the econcomy vent were on like in the older model of cars). I am a single mom with little money and my warranty just ran out so I hope it's nothing major.I've had some guys tell me that the "heater door is not operating correctly" and one says I may just need to add some anti-freeze since I have not added any in in over a year. I had to replace a water pump 2yrs ago, and I've felt the flooring on passenger side to make sure not wet (heater core gone) and I don't feel it's either of those.

  • Anonymous Dec 16, 2008

    yes it blows but no heat

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I had the same problem and it went away on its own. Make sure the button to the left of the rear defroster is off, I think that's what did it for me.

Posted on Jan 05, 2009

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Fuse on blower / does it blow

Posted on Oct 06, 2008

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I put a new thermostat in my 1994 ford escort,and still dont have warm heat while my heater is on. How do I test to see if I have a bad waterpump?


If it where your water pump isthe vehicle would overheat. After you replaced the thermostat do you run the engine at idle with the radiator cap removed until the radiator fan came one? This will help push the air out of the system. There are two other possibilities. 1. The heater core is plugged. Back flushing the heater core may help remove the built up debris and get you heat again. 2. The blend door may not be fully transitioning from cold to hot. You should be ale to hear a district change in how the air sounds when switching from full hot to full cold. Let me know if you have any questions and I'll do my best to answer them. Thank you for using FixYa.com!

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Close the petcock.

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Aside from flushing the radiator and heater core andreplacing your hoses, did you happen to replace your thermostat. Sounds to me like that's your problem if everything else seems to be in order. If you change the thermostat and still have no heat, you might check your vacuum lines running to the back of your heater controls inside your dash. That's really the only other thing that I believe could be causing your lack of heat.

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