Well heat doest work,when i am driving it feel like it want to warm up but doesnt.and when i stop at a light it blows cold air

please check rear blower heating control actuator.
it appears that this controllers doesnt work from cold to hot

heater blows cold air idle chrysler 300 Questions & Answers ...

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Find solutions to your heater blows cold air idle chrysler 300 question. ... blow warmair for a few mins then back to luke warm. i replaced thermostat ... HEAT BLOWSCOLD AIR WHEN IDLING ONLY GETS HOT WHEN START DRIVING ... About 15 minutes after driving the diver side vents start blowing straight cold air but the ...

Heater only works when pressing the gas? - DoItYourself.com ...

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Nov 3, 2011 - When I press the gas, the air from the vents is nice and hot. .... So am Idriving a car with a ton of problems, or could the power steering ... Just anotherquestion, when warmed up does the engine temperature ... When the heater is on and I'm not pressing the gas pedal, luke warm air blows from the vents.

Heater blows cool air when stopped and warm air while ...

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RedditFeb 12, 2014 - Heater blows cool air when stopped and warm air while driving 2008 Kia Spectra (self. ... just fine but appears to blow cool air when I was stopped at a stoplight. ... My temp gauge would also be pegged high when at idle / low RPM. ...thermostat only blocks coolant going to the radiator, and the heater core, ...Missing: 300m ‎luke

Why is My Car AC Blowing Hot Air? - BlueDevil Products

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Usually a sign the thermostat is not working correctly, or the radiator is not full of coolant.

It sounds like the radiator is low on coolant.
You could also have air pockets in the cooling system if the system is not full of liquid.

One of two things has happened. Either your coolant has gotten really low (easy enough to check) or you heater core is starting to plug up.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

The most likely culprit is the condenser fan not working. While driving, air is forced through the condenser fins cooling the condenser and all is fine, but when stopped and the fan is not blowing and you notice the air get warm.

when a vehicle stops but is still running it produces a lot of heat,since you still feel some cold air from your ac ,it is working,however maybe not up to par or its just not as much as you would like.The reason it feels cooler when you are driving is the ability to get rid of the heat from the motor because the airflow pulls away the heat from the engine and helps the cooling system.

While engine running, does the air feel warm to hot blowing through the radiator, if it does water is circulading, if it feels cold, replace thermostat.

This sounds like your automatic climate control is starting to malfunction. Check to make sure your coolant is full, and temp is not fluctuating, and when your vehicle is warmed up, try using the low setting and feel for air temp. Is it warmer than if you turn it up? When at idle the vehicle is not producing heat the same as if you are driving, putting load on your engine and more air/fuel combustion means more heat, which is why you can feel heat while driving. Ideally you should feel heat as soon as the engine is warming up, getting hotter as it reaches peak temp of 190-210 degrees. You can try to make sure your water control valve is not blocked, and all electrical connections are secure. This will be located close to your firewall and connected to the coolant tubes that run into your firewall to your heater-core. Also use recirc (setting)to try to summon as much heat as possible, however ultimately, you may need to take you vehicle in for service. If it only warms when driving defrost will be an issue. Good luck.

I'm not sure your problem is a blown fuse. If the blower motor is running and pushing out air, then it's working normally. First check would be the thermostat, let the engine warm up and feel the radiator hoses. If 1 hose gets hot and the other is cold, most likely you have a bad thermostat. If thats ok, make sure you dont have any vacuum leaks, as most of the blend air doors that allow heat into the van are vacuum operated. It doesnt take much of a vacuum leak to lose your heat. Finally, make sure the control cables behind the head unit are in place and not kinked or broken.