Heater blows a little heat

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 ...

www.doityourself.com/...repairs.../459521-heater-only-works-when-pres...

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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Check hoses to heater core to make sure BOTH are getting hot. If yes, bad blend air door or actuator likely. If no, back flush heater core or replace.

I assume this truck has daul zone heating and a/c, the air blows but is not hot? if this is the case then you may have dissconnected the blend door actuator or it just went bad. this is common that the actuator goes bad,
there are two seperate actuators that control the hot/cold door in the heater box this way the passenger and driver can set there on temp.
the actuator for the drivers side is locted on the drivers side under the dash on heater box, the blower is on the passenger side , you can check connections but i do not think it is that but rather the actuator.

Sounds more like a vacuum hose has fallen off the selector valve on the in dash heater / AC controls

check solinoid valve on heater hose for rear air

what motor? i have a dodge ram 4x4 with a 5.9 and the thermostat is rated at 195. if you havent noticed any coolant loss, its not your heater core. try bleeding the system (starting the car with the radiator cap off, and then filling with antifreeze after the thermostat opens up) because sometimes air caught in your system will do that.

If the heater core is leaking it will blow steam out onto the windshield fogging it up. Check your coolant level in the radiator. Check for wet carpet near the heater blower motor. Is it blowing hot??

The heater core might need back flushed, I just did mine this winter. Go to dakota-durango.com and introduce your self and your rare as ever truck, a v6 durango, and have fun.

Have you checked the coolant level? What you describe is exactly what happens if the coolant level is low. When stopped at idle, hot coolant is not circulating through the heater core, so no heat. As the engine increases in rpm's when you pull away from the light, the water pump is spinning quicker, and some coolant is making it to the heater core. So check the level, and if it is low, keep an eye on it to see if it drops again. That of course indicates a leak somewhere. Get it fixed, as overheating the engine leads to costly repairs and worse case a new engine. Let me know how you make out with this.

That could be caused by low coolant level.. Check the coolant level..
It could also be caused by bad circulation or a bad or on the way out heater core..

Have a great day !