You have a leaking heater core. You might smell antifreeze if you turn on the defroster.
More than likely the heater core is leaking.
You have a coolant leak somewhere in the system, possibly in the heater core.
Antifreeze is used to heat the cab of your vehicle. When you turn on your heat in your cab, it opens up a valve that allows the hot antifreeze to flow from the radiator into the heater core. If there is a leak in the rubber tubes that flow into the heater core, or if the heatercore is damaged, you will smell the antifreeze in the cab of the vehicle. You may need new hoses to the heater core and/or a new heater core.
There is a very small leak in the heater core that is collecting in the vent system and is evaporating out when you turn the heater on. The smell is from the antifreeze in the water.
if you got antifreeze on your windshield when you turn the heater on, it's bad
A small amount of antifreeze smell may be emitted from the radiator overflow. However if you smell antifreeze you need to make sure there isn't a leak. It may be something simple if you catch it early.
The heater core is cracked. You may also be smelling a sweet sort of smell when you turn on the heat and the car is running hot. That sweet smell comes from the anitfreeze when it burns. I have a 1998 ford Expedition and I smell antifreeze inside the truck. also antifreeze leaking around the passenger side of motor outside..... I can see a mist coming out of the ac vents.... could it be bad heater core and is it easy to fix or do you have step by step removal/installation instructions? please help Your heater core is probably cracked. There is alot of work to get to the core. You have to remove the front dash board.
Antifreeze fluid will cause your windows to fog. Might need a new heater coil. When the air is blowing it causes the fluid to mist. Therefor fogging your window. You should smell the "sweet" smell of antifreeze inside the car if the heater core is leaking. If your car has air conditioning also keep in mind a couple of things that could also cause this: 1. No freon in the air conditioning system. The AC runs above 32 deg. on defrost to help defrost the windows. 2. The condensation drain at the bottom of the Evaporator (AC) coil may be plugged and water is staying in the Air conditioning plastic case that surrounds the AC coil!!!
This is a classic tell-tale sign that the heater has a "blown" core. A new heater core is the only option, I think, and that runs to money because of the labor involved. If you live in a very warm climate, you can get by with simply bridging the "In" and "Out" heater hoses wit a connector made for the purpose. But if you need the heater at all in winter weather, the core must be replaced.
This is a result of dust and other debris that has accumulated on the coils or in the heater. When you turn it on, it begins to burn off and that is what you smell.
If the heater has a sweet smell it could be that the heater core is leaking engine coolant. When the leak gets worse you will have a wet floor on the passenger side and the windshield will fog up when you turn on the defroster.
If it is a "rotten egg" sulfur smell it is bacteria. Flush the hot water heater and turn up the heat to between 130 and 140 degrees F.
Those are the classic symptoms for a heater matrix (core) leaking
It is possible that a car can smell like gas when the heater is turned on for a few reasons. One possible reason that this happens could be a leak in the line.
Possible heater coil.
AnswerYes, most likely. Cut the heater on hot and the fan to high. You should see water dripping or the air come out of the vents will be very moist. Also take a light and look for any wet marks, green streaks (anti-freeze) on any part of the heater coil. AnswerIf the fluid taste sweet, it is coolant, and more than likely, the heater core is leaking and needs replacing. If it is just water, then the A/C condenser drain line may be stopped up or your windshield is leaking. DO NOT TASTE ANTIFREEZE~!!!! It is poisonous. I think what the other answerer meant is that if it has a sweat smell, then it is probably antifreeze.
The smoke is actually antifreeze mixed with air. The most common cause of this is a leaky heater core.
The Heater core is Either clogged or has gone out. If so you will notice either a leak of antifreeze or you will smell it when you turn your heater on, and your clutch needs to either be adjusted or replaced depending on how long the part has been on your car
yup, sign of a bad heater core
check your antifreeze. open your radiator cap see if you have full radiator. if you are empty that's why. if your full trace the water flow to the heater there could be a valve or air duct flap hanging up.AnswerIt could also be you heater coil. Somtimes calcium and things will build up and it will not work any more or not as good. it could be a few things. The heat coil being the main one or you are not driving far enough for it to warm up.
Most likely your heater core is leaking.
There must be a gas leak. Contact your gas supplier IMMEDIATELY, if the smell is in a house. If it is in a car, have your mechanic check for a leak.
you will notice oily bubbles in antifreeze, and if there is water in your oil it will turn into a creamy caramel color and sometimes even froth into a white lithium grease consistancy
Gas leak. Have this fixed ASAP!