Heating core has been plumbed in wrong or most likely has a leak in the system, as you are smelling the antifreeze - seems to me like the antifreeze is not reaching the core, have you mistakenly plumbed the intake/out take the wrong way round?, this would cause the windows to fog up as the heat is being taken away fro the core rather than being taken into the heater core
i just flushed my radiator now the antifreeze smell stopd but my windows still fog when i turn on my heat, a few weeks ago i had a radiator leak and i used some radiator leak stop do u think this could have clogged my heater core? if so how can i unclog it?
nothings leaking on the floor of the passenger side so i dont think the heating core is leaking
the only way is to flush the entire anti freeze from the whole of the car, this means draining the core, draining the engine, draining the expansion tank & draining the radiator, Again!, when you have drained everything reconnect all hoses & engine block plugs apart from the radiator top hose, put a garden hose inside the radiator & turn on the tap, place a suitable container under the engine bay under the top hose to collect the remaining antifreeze in the system as it is lethal to pets & wildlife, when the water runs clear let it run for a further minute then shut off the hose, drain all the system components again & fill with good quality antifreeze, if your windows are still fogging up but the heater works elsewhere then I suspect that you have a faulty heater matrix, this directs the warm air where you select it with the switches, these are relatively inexpensive to buy from a breakers but are an absolute pig to fit.
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SOURCE: 1999 Ford Taurus, no heat.
Try checking the two pipes that go into and come out of the heater matrix, is one of them hot? if it is there is an air lock within the matrix, Also is the thermostat opening fully? Sorry i know you said you have changed it twice already but take it out check settings when it should open and close, then boil some water and test the thermostat
SOURCE: 1998 Expedition: 2000 Ford Expedition I smell antifreeze with heate...
If you smell antifreeze it may be 3 possibilities: 1. you may have a leaking hose/hose connector , or water pump. 2. your heater core is bad and needs replaced. Unless you know what you are doing I would highly suggest taking to dealer for heater core replacement. The dash and steering colum has to be removed to get to the heater core. This is not an easy job believe me (about-900-1200 job). If you have your heater core replaced then also replace the climate control door. This is good preventative maintenance and also a a dollar saver. I would have a pressure check run on your radiator as a first thought. All you may have is a bad hose and that can easily be replaced.
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