Question about 1998 Pontiac Grand Prix

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The heater when i turn on the heater, it smells bad in the car.

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Try to use the internal duct, do not use the one that gets the air from the outside, look for the external gutter on front windshield bottom, clean it up with some bacteria, pine detergent, see the discharge hose of that system my be plugged with dirt, look inside engine compartment, or car bottom under windshield area

Posted on Jan 21, 2009

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My 2001 Kia Sephia had a very strong antifreeze smell after running for about 1/2 hr. turned the car off and let sit for about 45 min. and when I turned the car back on my heater does not work, NOTHING at...


Is the fan working and there is just no heat? Or is the fan not working at all. Need more info, but the smell of coolant is either a leak, a bad core, or a bad hose Is the fluid going down? more info pls

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1997 blazer,heater bad smell when on


Is it a bad smell or a sweet like maple syrup smell. If its sweet you got a coolant leak probably heater core. Bad smell possible causes burning something up. I would run some water in the in the air intake below your wipers just to see if it changes. Not much but a little. Better or worse in cold tempers. Hwo about when the car first start or has run awhile does the smell get better or worse. More feed back please.

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Smoke coming through vents temp. gauge going up acting like its going 2 overheat turn heater on hot and smokes bad turn to cool and smokes a little my husband thinks it's the thermostat and wants to...


If the heater core is leaking, you would get a lot of steam that would smell "sweet". That would also leave you low on coolant, which could be a source of your overheating. If it's more of an electrical smell, you may have a blower motor or a blower motor resistor going bad, but won't cause the engine to overheat.

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HEATER DOES NOT HEAT. CAN SMELL SOMETHING WHEN CONTROL IS ON. WOULD THIS BE HEATER CORE RELATED?


Yes is it a sweet smell, is there wetness on passenger side floor does window get foggy. then yes heater core.

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1 Answer

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Yeah, and it probably smells like evaporating anti-freeze. Turn off the heater to avoid the smell. Good Luck.

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Bad smell from a/c


Do you leave your climate control in the Auto position. This is bad. What happens is the evaporator which is located in the vents never dries out and you begin to grow mold. Does it smell musty, locker room type smell.
Also since it came out the heat vent it could also be a leaking heater core. Check you coolant level and reservior. If low this is an indication heater core is leaking. It may not of leaked enough to tell but usually these are the only reason the vents would smell unless a rodent ended up there and died.

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2004 Envoy Smell like Anti-freeze when turn on the air


probably is a small seep in the heater core. does not have to be leaking enough to find any inside the car to have a strong smell in there just a small seep that makes the heater core wet will do it.

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1 Answer

Heater blower went out?


Either the blower went bad or the heater relay went bad. This does not sound like a heater core problem unless you where smelling a SWEET smell when it was running.

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1 Answer

The car smells like antifreeze when i stop at a stoplight


sounds like heater core.If not to bad yet right floor board won`t be wet if bad enough right floor below heater will be wet.Turn defrosters on hi windshield moisture probly heater core

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2 Answers

Car Heater smells strange


from he Popular Mechanics site if the smell in your car is like maple syrup:


(1) SMELLS LIKE: MAPLE SYRUP
WHEN: After the engine has warmed or possibly even after it's shut off for a few minutes.
THE CULPRIT: Coolant containing sweet-smelling (but toxic) ethylene glycol is leaking from somewhere. It could be coming from a radiator or heater hose, a failed intake manifold gasket or cylinder head. It might be coming from a leaky radiator cap or the radiator itself, especially if you smell it outside the car. A strong odor inside the passenger compartment probably means a bad heater core.

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