May be separate problems. A small fuel leak in the engine may be the source of the 2 scents. A coolant leak may be the source of the poor heat and burning smell. Get it checked out before you have a serious problem. Next time you run the car, shut it off, lift the hood and try to smell where the source of raw fuel is, or any rising smoke.
Gas leak. Have this fixed ASAP!
Clarification of terminology- Heater core not heater coil. And Yes there is a very good chance that it may be leaking.
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.
You might have a gas leak in your front engine compartment. The heater pull in air from the front and therefore if you got a gas leak it will pull the smell in get it check asap.
You have a leaking heater core. You might smell antifreeze if you turn on the defroster.
it could be the anode rod in the water heater, it also smells like sulpher!
It is caused by a fungus which grows on the heater core or the a/c evaporator. There are things that you can spray in the air intake but they don't last long.
You have a coolant leak somewhere in the system, possibly in the heater core.
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.
More than likely the heater core is leaking.
If you try turn on the heat and a huge cloud of smoke fills your car, or you can smell burning anti-freeze....then you have a busted 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.
You set a heater to a certain temperature and when it reaches that it turns off.
Chances are it is a busted heater core. It your window has a fog on it when you turn on the ac or heater.
When you turn on the heater for the first time, it smells because it's the accumulation of the dust from the spring and summer. it's fine just turn it on for about 15 min with the windows open and it'll disappear in no time :)
Yes. That smell is the coolant being blown into the air ducts. You might also notice a slimy film on the the glass that is very difficult to clean.
You may be refering to the glow plugs. They help the engine turn on.
there seems to be a short in the electrical system, i would start by checking the heater switch,
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.
Possible mouse nest in the heater box or duct work in the car.
It's obvious that you have problems with wiring. I would start from the heater/AC control panel.