I smell around the engine compartment when I shut off the car. No leaks that I can see underneath the car or around the engine. No hose leaks either. I know I lost my air conditioning over the summer and that a recharge did not fix it. Heater core possibly?
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Re: Anti freeze smell when car is shut down
Do u smell coolant in the car when te doors are closed? if not it is not the heater core, have you had the system pressure tested at a shop? If I had to guess the 2 area's that would cause this are loose radiator hose clamps that just seep, not enough to get to the ground, but enough to smell the coolant, the other a slight leak at the water pump weep hole on the underside of the water pump, this can also be a seep and not reach the ground. Try adding a can of Alumiseal radiator and block sealer, comes in a little aluminum colored tube, about $3 US
Stop leak blocks up the heater core, or at least that is my experience. Once the anti-freeze fumes get into the air filter the smell may linger for days. If the anti-freeze overflow has been opened by anyone to check it, the fumes will get into the air filter and you may very well feel unwell from breathing the fumes for any prolonged period of time when driving.
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If it's leaking that bad, open the hood take off radiator cap and fill with water (without making a mess and spilling a bunch. Then simply watch for where the leak is at, if it's leaking from a hose, the radiator, or from around the area where the belt is located on the passenger side of the engine compartment. If it's leaking from the passenger side around the belt area your water pump is the most common cause. They are made so when the bearing wears out around the shaft the pulley bolts, it has what are called weep holes and the water just runs out to tell you to replace the water pump.
if you r getting smell in car and fog on windshield, with known history for common problem, you have a heater core leaking, You could try a stop leak from a parts supplier, but you need a heater core, and is a rather big job, as entire dash needs to be pulled back to axcess
try stop leak, if that doesn't fix, you didn't waste alot of time and money
good luck, and if you wanna tackle job, let me know i will send guided steps to help you along
No. the cabin air filter filters out the pollution from the outside of the vehicle, i.e. pollen, smog, ect. The number one cause is usually the heater core. It could be leaking or a loose hose might be causing it.
The anti-freeze smells like it burning because it is coming in contact with your brake pads (will contaminate pads and reduce life and increase stopping distance, exhaust system (most likely cause of burning smell), or some other hot spot on the the engine.
You should resolve this as it will cause over heating as the system can not properly pressurize and reduced coolant level.
Sounds like a possible heater core failure(hole in it) the smell indicates to me the coolant(anti-freeze) is leaking into the passenger compartment. Check the carpet in front of the front passenger seat for moisture, this would confirm heater core leak. Good luck !
Firsdt check the radiator cap thats it tight , then check for any anti freeze visible on the engine, then check under the car for any leaks. Is the smell of anti freeze inside the car ? , check the heater core you may have a leak there. the newer heater cores are aluminum and certain anti freezes, are extra acidic , which causes the anti freeze to eat at the heater core causing leaks, it maybe be a pin hole leak in the heater core ,causing the smell.
More info needed. Is the leak coming from around the pass side of engine, drivers side of engine, radiator area or firewall area. A specific quadrant of the engine compartment would help narrow it down some. if it is leaking from the engine itself, there may be some expense in repairs (water pump possibility here.) Hoses usually are not that hard or difficult to replace. Radiators get real expensive real quick. Please update Engine compartment Quadrant if possible