Question about 2000 Pontiac Grand Am GT

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Smell antifreeze inside when car is running - 2000 Pontiac Grand Am GT

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Check the floor mats for moisture; you may have a bad heater core. You can also get fumes from an under-hood leak if serious enough, check the level in your coolant overflow to make sure you aren't losing a lot of coolant.
BTW, replacing the heater core can be a real hassle; they are normally installed before the dashboard and can be nearly inaccessible.

Posted on Nov 18, 2009

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Check for leaks outside the car around the radiator and hoses if nothing is found there you'll probably need a heater core

Posted on Nov 18, 2009

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Leaking heater core, maybe . Do you smell anti-freeze inside the vehicle ? All of the windows or mainly the front windshield ?

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If you don't see any antifreeze leaking in the engine compartment (especially around the radiator) you could have a leaking heater core. Does the smell go away if you turn off your heater for a while? If so, that's likely where your leak is.

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Sounds like the heater core is leaking. Locate where it is and see if antifreeze is leaking out the bottom.

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I smell antifreeze,found no leaks,vehicle is not running hot


Its the heater core you smell it on the inside because the fan is blowing it into the vehicle antifreeze is unuswal stuff it forms a mist and becomes air borne even a small leak you will smell with the fan running look for wet spots on the carpet under the core but the mist may be so fine and you wonn;t feel it but this your problem

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How do u bleed the hoses from the radiator u can smell the antifreeze in the car need to know if it may be a hoses or something less


If you smell antifreeze inside the car then you probably have a bad heater core causing the coolant to leak inside you vehicle and giving you the antifreeze smell which will make you sick. If you windshield is all foggy and hard to clear and the right passenger floorboard is wet then your heater core is leaking.

You can drain the coolant out of your car by taking off the lower radiator hose. This will get most of the coolant out of your car. If you have a hose leaking under the hood you may smell coolant inside the car, but it shouldnt be too bad, if you have a leaking hose however it should be pretty obvious and your car may even be overheating.

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check the coolant level to see if it has dropped.Then look under the engine,for any leaks.Look for pools of coolant on top of the engine,or run down on the sides of the engine.Then look for radiator hoses,ans heater hoses that are leaking.If you are loosing antifreeze ,and you are sure the coolant is going somewhere,you may sill have a head,or head gasket,that are bad.If it has not been long before the head change,then the antifreeze may be still present in the exhaust,or on the engine,so you may have to wait a little longer for smell to disapate.Cleaning the engine can help.

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Wasn't no problem with untel i replace my water pump. as i finish the water pump job i turn the truck on and feel it up with antifreez and at same time i turn the heat on and smell of entifreez comes out...


You have an antifreeze leak. Probably in the heater core (a small radiator inside of the dashboard that heats the air as it passes through). When the engine is running do you see any steam around the engine? Or smell the sweet antifreeze smell around the engine? If not then it is probably the heater core instead of a hose or somewhere on the engine. Does this truck have the option to switch the heater to recirculate he air inside the cab instead of drawing in outside air? If it does then you can set it to recirculate the air inside and if it still has the smell then its definitely the heater core. Often with a leaking heater core the passenger side floor and firewall area will get wet, but not always.

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the small radiator just inside the cab, where the hoses go to the heater is leaking. You may try using stop leak (many don't recommend this) or take off the heater radiator. it will probably get worse when you turn on the heater and fog up the windshield if not fixed. hope this helps.

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Antifreeze smell


If u smell the antifreeze inside the car, the heater core needs to be replaced most likely. It is leaking inside, and will get worse, to the point of 'fogging up' the windows inside.

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