i would get this checked immediately. i had the same problem and there was a major leak in the fuel lines and the car could explode at any time. i was sitting on top of a ticking time bomb. Dealer had to fix it. http://www.autozone.com/servlet/UiBroker?UseCase=S001&UserAction=viewSimpleDiagInfo&Parameters=info
i believe the heater core is leaking, a small pin hole leak can generate a lot of smell.
Most of the time it is caused by a hole in the heater core, do you smell a sweet smell? The sweet smell would be the antifreeze.
Probably - your head gasket is blown. Antifreeze will be coming out of the tail (exhaust) pipe.
If you smell antifreeze in the passenger compartment of your car your heater core is probably leaking. It's under the dash somewhere ( depends on the make and model ). Another symptom of a leaking heater core is moisture build up on the inside of the windshield when you run your defroster.
heater core possibly plugged and leaking
Defective heater resistor pack.
the best possible guess I could think of is mice... If it's a chemical smell, you might have a heater core leak. If it's a mildew smell, maybe you have an interior air filter that is funky.
Leaking heater core
there is a whole in the heater core
Check your heater hoses, that's where the water ciruclates into the heater from the water pump.
BG chemicals and some other companies have a cleaner that is sprayed directly into the evaporator case. It would have to be done by a repair shop.
windshield leaking heater core or heater core hoses.
Blown Heater Core - The heater fan blows past the heater core and if it has a hole in it your antifreeze ios being blown onto your windshield.
Probably a leaky heater core. Look in the passenger side floor board (maybe driver side as well) and see if the carpet is wet. These are all tell tell signs of a heater core that is leaking.
If the car heat has a fresh air setting, then it could be drawing air from outside of the vehicle. The fumes are most likely coming from a problem under the hood.
It probably has a leak, possibly from the heater core.
Changing ac components under the hood should not cause a chemical smell. If the smell changes by changing the air settings from recirculate to fresh, then there may be some chemicals on the outside of the parts. It is also possible that you damaged a part of the heater core system and the smell is antifreeze.
The heater would not be working on a 1990 Dodge Grand Caravan if the heater core is damaged or blocked. Hot coolant from the engine must flow through the core to allow hot air to pass into the cabin.
The blower may simply have burned out. If the blower is out then the heater probably still works.
Depends on the smell. What does it smell like?
Only reason would be that the heater core is leaking.
this is a urine passage
The cooling fan at the radiator is not coming on. Running the heater take heat out of the coolant as it goes through the heater.
There are several things that could be going on. The most common thing that would make your car smell like gas when the heater is on would be a bad heater core.
if your asking about your air conditioning, it could be your refrigerant, but a smell that would more closely resemble vinegar would probably be your coolant