TURNED CAR NO HOT AIR COMES OUT THEN I SEE ANTI-FREEZE ON THE INSIDE OF THE CAB I WAS TOLD BY MY FATHER THAT THE CORE MIGHT HAVE A HOLE IN IT PLEASE HELP ME AND INSTRUCT ME ON WHAT I CAN DO TOO FIX THOS THANKS !
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Re: NO HEAT AT ALL
You have a busted heater core if its on the passanger side cab floor. easier on a truck then a car to replace but no picnic just the same. If you are unable to do the repair a quick emergency fix to drive the truck (with no heat) is to locate the heater core hoses on the passanger side firewall and undo the clamps and by-pass the heater core.
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The air from the heater core will be as hot as the coolant temperature of the engine. 80 Degrees is the opening temperature of the thermostat and that will be where it remains until the engine starts to work or the ambient temperature rises.
Thermostats come in a couple of different opening temperatures so check around for one that opens around 85 degrees if you want hotter air in the cab
Another point is to close the recirculating vent door to the cabin as the heater core is trying to heat fresh freezing air if it is open
when you do the inside heater core you need to back flush the system. then do it forward do this a few times. then put back together and leave the top off the filler tank for the water. run engine keeping it topped up with water. have the heater open but not on fast blow 0 or 1 get the engine up to temp and as the fan starts to kick in turn engine off this will make a lot of the water come out don't top up at this point, now wait for the engine to cool down and then top up. wile the engine is running you will see the air come out and bubble out, you should notice it getting hot inside the cab but carry on with it till the end. as i have put in this post run for a day without anti freeze in then put this in, by taking the cap off. and undoing the the bottom pipe. then when tank is empty put the pipe back on and fill with anti freeze. full strength not mix. run engine for 5-10 min without the cap on then let cool down and put the cap back on should be all good then.
disconnect the heat hoses going into fire wall , put hose into one with pressure and flush as it sounds like it could be bloked in the heater core,the other thing that could be the problem be the hot ,cold switch as it restricts the flow to makes the heater hoter or colder , it might need tlc or replacing as it is manaul not elec
heater core is probably what was changed,..a little radiator under the dash that the hot water runs through and a fan behind it to blow at it thus giving you heat,...pretty much thats it in a nutshell,...sounds like something still leaking under there, (anti-freeze smell),... fill it back up with anti-freeze (non-toxic type so you don't polute) and drive to where you gotta go,....go to your mechanic to find that leak,.good luck, and do a hole shot for me! thanks, cracklin joe
sound like you have a bubble in the system. make sure you drain all liquid out, make sure the thermostat is the proper temp rating and is not backwards. Fill the radiator up turn the car on turn the heater on full blast fill up the over flow with anti freeze. put the radiator cap on. watch the temp in the car. dont let it get all the way in the red. you should see the overflow tank start to get the anti freeze sucked out of it don't let run dry. I had this problem with my 2004 dodge ram. This is how a master mech told me to do it
If the fan blows only cold air, then you might have a restriction on the heater core. The heater core is like a small radiator inside your dash. The coolant flow through it can be restricted by corrosion. The lack of flow of coolant through the heater core will result in a lack of warm air inside the car. Flushing out the heater core may help. If not, you will have to replace it. I would say though, 80% of the time the cause is just restriction. Get the heater core flushed and I am sure you will get your heat back.