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Re: HEATER NOT HEATING
If your heater is not blowing warm air, your thermostat is probably sticking or your coolant level is critically low. When you start your vehicle, your radiator coolant begins warming up from being cycled through your engine block. One the cooland reaches a certain temperature (usually 130-150 degrees F.), your thermostat spring will retract and allow coolant to then pass into your heater core. However, if your coolant level gets too low, or if you are using a coolant mixture that has more water than antifreeze, thermostats have a tendency to rust and corrode and will stick. Thermostats can also go bad for what seems like no reason at all. The good thing is that usually thermostats are pretty easy to replace. It's the most common thing that would cause the problem that you're explaining. However, if changing the thermostat doesn't fix the issue, there is always the possibility that you could have a collapsed hose somewhere under your hood. If you change your thermostat and none of your hoses are in bad shape, you most likely will have a vacuum line to reconnect under the dash, as most heater controls in late model vehicles are vacuum operated. I'm almost positive that the thermostat will be your culprit though. **Make sure when installing the new thermostat that you use a new gasket or O-ring, whichever applies. Afterwards, start the vehicle and watch to see if you have any leaks around the thermostat housing and continue to observe until the temperature of the vehicle gets to normal operation temperature.
I hope this helps, and hopefully you'll have heat pumping through your vents in no time at all! Have a great day and try to keep warm!
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Is your eng get warm if you eng is not heating up it can be a thremaste stuck open if the eng is heating up ck the heater hoses if the top hose is hot and the bottom is cold the heater core is pluged if the two are hot and warm the blend door is not working
start engine let run 5 minutes in park open hood find heater hoses at fire wall passenger side are both warm/hot if no, thermostate, if yes check heater controll valve or clogged heater core,if cable operated,opening and closing,if vacuum operated.is it getting vacuum when going to hot to cold?outside cold air duct working?there is allso a controll box behind radio on firewall
See if your library has a Stratus shop manual and check the heating system chapter. You didn't say if the engine was reaching operating temperature or not. If the engine is warm but you are not, I would say the problem is in the heat exchanger somewhere. If your engine is cold, you can't really expect the heater to get warm, now can you. Then you have a different problem to chase.
Lack of water on your floor means your heater core is not leaking. It could still be plugged somewhere. The fact that you get some heat initially, but it turns cold when you turn the fan on, sounds like a lack of adequate warm water to the heater core to me. If the engine is warm, it could be a circulation problem of some sort.
There may not be enough coolant in the system. What happends is the heating core is nothing more than a small radiator inside the car. If the fluid is low the heating core is empty. But once you start driving the water pump works harder and fills it up. Another possible cause is a sticking thermostat. If its stuck open the engine cant retain water to heat it up. Thus blowing cold air. Whith the engine cold remove the radiator cap and check your coolant level. If it is full a replacement thermostat may be needed. HTH and dont forget to rate.
it sounds like a vaccume leak check under hood for vaccume line that goes through the firewall trace this line and look for leaks next pull controll unit out of dash most times this unit is worn an will leak causing lak of controll of the heat an airconditioning
normaly bleeds itselfs.
fill up coolantreservoir to the max and start engine.
open heating max.
now hoses going inside must get real warm. and heat must go inside.
temp gauge must go to middle
if stays cold, check thermostatic valve.
It may be the valve that controls the amount of water entering heating core but I'm wondering if your engine thermostat isn't stuck open. This is what controls the coolant temperature in your engine. It closes off while engine is off. It will remain closed after you start your car until the water warms to a certain temperature then it starts to open enough to keep your car at the proper operating temperature. If it stick open then it will take a lot longer for the engine to heat up and on smaller cars might never heat up enough for your heater. If you live in very cold climates such as where I live in Wyoming, we have to change to a higher degree thermostat so we have a good heater when it's 30 below zero.
Be very cautious here but one way you can check this is to put a piece of cardboard in front of your radiator and stop the airflow that cools your engine coolant. THIS WILL CAUSE YOUR CAR TO HEAT UP AND CAN CAUSE ENGINE DAMAGE IF IT OVERHEATS. Don't completely cover the radiator but if your heater warms up when you put the cardboard in front of radiator it's a good sign that your thermostat is stuck open and needs to be replaced.