Smelling Antifreeze Through The Vent

Then the service supervisor took it home with him that night and said he could smell it. through November coming out of our vents when either the AC or the heat is on. Sounds like a heater core that is leaking. The most recently reported issues are listed below. If it's an oily smell you may have a leak in your AC system and your smelling the oil in the coolant. Normally, antifreeze leaves a gray residue when it dries. please reply and let me know what you think. I just turned on my heater for the first time this fall. For the past week I've noticed coolant smelling smoke coming through the air vents of my Ford F150. Vent outside air was used most There was coolant smell but I would not find the source and it went on for a few weeks. Jeep with antifreeze smell from heater by dlprincess | January 25, 2009 10:33 AM PST. Chrysler wouldn't do anything about it so the dude TRADED it in on ANOTHER Challenger, ate $6k in the loss and the SAME THING HAPPENED to the new car!!!!!. The holes in mine were pin sized, hence very little drop in coolant level. This will push antifreeze through the ballast system, across all pumps, hoses, fittings and intake valves. I cant find a leak anywhere but it really smells strong. Once I start driving the smell goes away rather quickly. Chill out with our wide selection of ceiling fans, small room air conditioners, portable air conditioners, wall air conditioners, window air conditioners and more. If does not work the first time do not continue to add stop leak hoping it will work that is when you can clog up cooling system. Im not sure whatelse it could be. Hot coolant from the engine flows through there and transfers heat to the vents which carry the heat to the passenger compartment. It started on the driver's side just behind the driver's seat, moved to under the driver's seat near the middle, and then under the console. Antifreeze has a bit of a sweet smell though not exactly pleasant. Smelling coolant through vents inside of cab After the truck warms up while running around town, I start to smell coolant through the air vents in the truck. I havent found any puddles of antifreeze in driveway, although I did an oil change a couple weeks back and did need to put a bit in recovery tank. With fluid in the box you may still get the smell of antifreeze when using the AC or fan, depending on the extent of the leak before a bypass is installed. More burning smell. A heater core would be one of the first things to come to mind if it's mostly accompanying use of the heater or defrost. An antifreeze smell comes out of the vents when i run my air conditioning , its very intoxicating. Check your coolant level while the engine is cold. You could clearly smell it when the car was stationary in the garage, and a slight whiff came through the vents too. By having vents, suction is very minimal. I recently changed the heater core due to a vapor coming from the defrost vent. Disconnect the core, loop the core hoses so that coolant flows around the pipes freely and see if you still detect coolant smells. If the heater core is leaking coolant and you put it on defrost you will notice the windshield gets a film/residue over it or you will notice. I’ve noticed a anitfreeze and a sweet smell coming through my vents when my car is up to temperature and the heat is on. I think it is the heater core simply because the passenger side foot vent had a small amount of coolant in it. Odd Smell through Vents After driving through deep water I have an AWD 2. The longest one on the outside is also the longest one on the inside. NONE of it came through the vent directly over the intake area. Then i get a STRONG smell of antifreeze. I jumped in and took a ride with him and could see smoke. and it seems to be causing a horrible film on my windows. Although all antifreeze leaks occur under the hood, you can diagnose the problem from inside and outside the vehicle. Not sure what could be causing the smell and I dont think its a normal thing, but i could be wrong. Mine just started doing the same thing. The smell is kind of an exhaust smell or acrid when the AC is on. I've been smelling something sweet coming through the vents whenever the air controls are on and this has been happening for a couple of months since I bought the car in April '05 (96 gsr). Heater core leaking? Common on older D1's and RRC's in my experience. it started off pretty faint, and i almost wondered if i was imagining things. I had the windshield replaced and then I changed out the spark plugs, since then when stopped at a light or simply idling there is a slight scent of gas coming through the fan vents, fan off no smell, engine off fan on no smell, no smell in engine compartment. I'm putting it out there but perhaps it's the heater core in the dash leaking coolant into the vent system. No smell with AC on or recirc on. Oh, and the smell gets worse during hard acceleration because the water pump is spinning up and pumping more coolant through your heater core leak. Hot coolant from the engine flows through there and transfers heat to the vents which carry the heat to the passenger compartment. Sure your not just smelling a coolant leak out under the hood and the scent is coming through the vents? Maybe a cracked radiator from that fender bender 2 days ago? b_r_o , Dec 8, 2018. I was getting a antifreeze smell, looked through the whole system and no leaks. Heard the same rattle on s mother 08 I drove for a while back. Driving the cat through the colder months and I’ve noticed that there is a smell of burning oil coming through the air vents. I'd appreciate a little advice. No use of washers. You don't state weather it is a burning oil or just an oily smell. Flushing Your Coolant Water Pump Replacement Radiator Replacement. And the thermostat appears to be working fine. Depending on the situation it may be your only option but you must be aware that you may be giving yourself a bigger problem then you are attempting to solve. I would double check your coolant level with that light and am sure that your power loss is a different issue. The longest one on the outside is also the longest one on the inside. Occasionally, the problem is actually coming from somewhere else, even though the smell itself is inside the bathroom. I just turned on my heater for the first time this fall. " The harmful chemical within antifreeze that causes these side effects is called ethylene glycol. It does not smell when i turn the climate dial to the cold setting, only when it is on hot. It's been 5+ months and no antifreeze smell. If smelling antifreeze through vents heater core has a small leak needs to be replaced or you can try a radiator stop leak not a 100% guarantee that it will work but it is worth a try. im thinking heater core but there is no water leaking into the floor board and iv heard that when heater core goes out that's what happens is this true or could my problem be something else?? fyi: truck doesn't over heat and my radiator is good, only. Sulfur smells that seem to relate to a septic system or plumbing drains are often traced to a loose toilet, missing or leaky toilet wax ring, dry plumbing traps at unused fixtures, inadequate plumbing vent piping by location or routing, or on occasion, a loose leaky connection in the plumbing vent piping as it runs concealed through building. i am losing antifreeze and i dont know where from. i checked the resivoir: bone dry. After a minute or 2, it disappears. But you can put your nose up to the vent and smell an odor. My coolant level has never fluctuated. Sure your not just smelling a coolant leak out under the hood and the scent is coming through the vents? Maybe a cracked radiator from that fender bender 2 days ago? b_r_o , Dec 8, 2018. ALL of the water poured directly onto the fender support to the side and in front of the factory airbox. Pump Antifreeze through the water lines. Chase down all hoses that run antifreeze through them. It started on the driver's side just behind the driver's seat, moved to under the driver's seat near the middle, and then under the console. The heater core is basically a radiator, where the hot engine coolant runs through to heat the interior of the car. [Corsa C] [00-06] Low Coolant, Low Oil, Burning Smell from vents and Wheel arch trim flapping! Discussion in ' Astra, Corsa, Zafira, Meriva, Adam, Cascada, Agila, Viva, Tigra & Nova [Includes AstraVan & Combo Van] owners forum ' started by micro , Sep 25, 2012. Losing coolant, Steam coming from vents 01-03-2013 02:31 PM #1 i have a 98 jetta glx with a vr6 and every week or so i get the low coolant light and have to add, also lately i have noticed steam coming through the vents and a heavy coolant smell. It began after the vent in only that room stopped working for approximately 15 minutes, despite indoor temperatures being several degrees higher than the thermostat setting. Im not sure whatelse it could be. One of my previous cars developed a thermostat housing leak, and it could be smelled coming through the vents. My fear is this is a sign of major engine trouble. TOM: It does that by flowing through a little radiator behind the dashboard called the heater core. One of my previous cars developed a thermostat housing leak, and it could be smelled coming through the vents. it happens more whenever i get on it. My daughter would testify to the coats we wore when driving through Colorado a few Decembers ago. I think it is the heater core simply because the passenger side foot vent had a small amount of coolant in it. Often when there is coolant leak, radiator fluid will leak on to a hot engine or heater core and produce the sweet burning smell that is easily recognizable. Turned on my vents to smell more. The Heater Core. only when heater is turned on, I have coolant smell coming out of vents. It has an external leak on the right side of the engine at firewall close to the condensation tube but its not coming from there. I didn't know then where is problem, however few garages quoted blown head gasket. I first noticed it on saturday when I drove to Goulburn and back. The SaniGard vent filter has a special type of activated filter media to remove these odors before they offend. There is strong attic/insulation smell coming through central air conditioning and in through bathroom fan after unfaced insulation installed over all the attic floor. The occasional overheating will make it so. I have looked, with mirrors, and flashlight, and there are no trace of liquid, but you cannot miss the odor, of the vented coolant. Too slow or at a stop, it chokes you and you have to open the windows and close the vents. it burns my throat and eyes and sometimes it keeps me up at night in our bedroom We have a one story house with an. Anyone else have this issue? I don’t have any fuel smell issue so far. Ive noticed here lately that i smell what seems to be antifreeze coming through the vents inside the truck. in an intersection) or speeding up to accelerate out of a turn. Use a garden hose to flush any remaining coolant from the heater core, and blow out the water using compressed air. Odd Smell through Vents After driving through deep water I have an AWD 2. I looked through the Forum and the only thing I could find that sounds somewhat close is the heater core issue. The car has only done 32000 kms. If you have a leak or are burning coolant, it would cause a sweet smell to waft through the vents and into the cabin. My toyota enginess have always had a faint (very faint) smell of coolant when hot. @chrishnaw , Christian, Ford Escape mildew/musty smell from vents would be common sign of moisture/debri/dust build up in lower HVAC duct work, uasually caused when the drain tube for AC plugs. White smoke/burning antifreeze smell inside car cabin I've noticed that sometimes when the car is in idle, white smoke comes out under the glove compartment, it comes out as a thin thread of white smoke that smells like burning antifreeze. That way it is documented even if they don't find anything so if something happens afterwards that is related to cooling, you at least have something to fight with (no guarantees, but it helps) to try and keep it covered. I thought it must be the Heater Core but it is only coming through when the vents are on and not when air is circulating. Depending on the situation it may be your only option but you must be aware that you may be giving yourself a bigger problem then you are attempting to solve. Smelling antifreeze when I run heat - Car Talk Community. Keep smelling a slight Antifreeze problem def check the connections I have had mine over the year loosen up and just slightly leak just needed new clamps or needed to be tightened 2000 Ford Ranger XLT 4x4 Offroad, 4. it is the clear tube that is beside. For the past week I've noticed coolant smelling smoke coming through the air vents of my Ford F150. I know it's coming out of the vents cuz I got on the roof and put my nose near the vents. tthere is a antifreeze/coolant smell in my car, unable to get rid of it. However when my neighbor stopped the truck, I could smell it through the vents, but once he starts driving there is no smell. Re: Smell antifreeze through heater. Another thing that gets this smell started is going through drive through car washes with you air on "intake from the outside" mode. Then the service supervisor took it home with him that night and said he could smell it. Many coolants contain a chemical called “ethylene glycol” which can produce a sweet smelling scent once it starts burning off, though it could also be a sign that a radiator hose is leaking or that the heater core is causing the smell. RAY: There's a little radiator under your dashboard called a heater core. I have a 2000 Navigator which recently has developed an antifreeze leak and vapors from the antifreeze seem to be coming through the vents and air conditioning. Occasionally, the problem is actually coming from somewhere else, even though the smell itself is inside the bathroom. That is unless the fuel smell is present in something else, such as a rag or filter that may have come into contact with diesel, and be within reach of the air sucked into the vents, which, on my truck at least, stay on external air most of the time. Re: Heater doesn't work and can smell coolant when I accelerate Looking around the matrix when engine is running. I smell coolant burning on my Ford F-150 year 2001. Jeep with antifreeze smell from heater by dlprincess | January 25, 2009 10:33 AM PST. Normally, antifreeze leaves a gray residue when it dries. Normally, antifreeze leaves a gray residue when it dries. Effects of Breathing Antifreeze Fumes. The observatory at One World Trade Center now has an official fragrance, pumped through the air vents. RAY: There's a little radiator under your dashboard called a heater core. Coming into the cabin through the vents. The fill level is in the middle and I have looked with a flashlight to see any sign of liquid anywhere and cannot find any. The coolant level appeared to have dropped a little. Blown head gaskets, cracked or warped cylinder heads normally come to mind, when coolant enters the engine oil. This would be more noticeable in traffic, because the vapors would not be blown away. You won't smell oil. All hoses in place and dry. Smell is coming from the vent while the fan is running on either heat/defog or cold. Smelling antifreeze when I run heat - Car Talk Community. Smell seems to be mostly from the driver side. There are no obvoius leaks anywhere and just yesterday I noticed that a faint smell of coolant came through mixed with the smell of oil. The radiator has the coolant/antifreeze, which keeps the engine cool. Effects of Breathing Antifreeze Fumes. The only place that antifreeze can enter the cabin air stream is through the heater core and its related water hoses/o-rings. It's been 5+ months and no antifreeze smell. I have attached all of the information you will need to replace the heater core. Heater Core Repair. Outside Smells. The cause of the gas buildup may be a vent-stack blockage, but it may also be an improperly installed vent, a plumbing fixture that hasn’t been used often or a cracked pipe. Would not take much of a leak here to smell the antifreeze. 3L and am experiencing a coolant smell coming through the air vents. Check for leaks under your car. I also have noticed a little antifreeze smell sometimes. Contents May Vary are hosting ANTIFREEZE Manchester's very first art car boot fair as part of Trade City. If you own a 2012-14 Honda CR-V, and are experiencing low heat from the drivers-side vent, you're not alone. There is strong attic/insulation smell coming through central air conditioning and in through bathroom fan after unfaced insulation installed over all the attic floor. It started on the driver's side just behind the driver's seat, moved to under the driver's seat near the middle, and then under the console. what to do So I have been having an intermittent coolant smell when using heat for the last few months (It's been very minute and intermittent). The spec Motorex coolant for the 1290SA is pink, not green. Second, if the smell occurs when a toilet is flushed or water is running, you probably have a cracked, broken, or loose vent pipe also check for a wobbly toilet as you may need a new wax seal. One of our patrol cars just did it to and it ran the PD $900 to repair it at the stealership so it looks like a long day ripping apart the dash for my own POV. If smelling antifreeze through vents heater core has a small leak needs to be replaced or you can try a radiator stop leak not a 100% guarantee that it will work but it is worth a try. Tested before my warranty was up, just to make a record if I find something down the line. Also, any antifreeze that hits hot metal (like an exhaust bit) will vaporize, and this vapor may be sucked into your vent system intake. last night the defrost seemed to fog the windows from - Answered by a verified Auto Mechanic We use cookies to give you the best possible experience on our website. When ever the vents are open for fresh outer air without Aircondition ON,it really smells odd (not fresh at all) but smell decreases by the time on a drive. Propylene glycol is a lubricant and will actually work to extend the life of the seals in your faucets and valves. Three years on my 2014 with constant coolant smell after pulling in garage. Many ideas? Just starterd Also I have a rattle on drivers side in dash somewhere under steering column. Does anyone know if it smells similar to an electrical fire smoldering?. The burnt plastic smell could be coming from your surroundings and traveling through the A/C vent. When I mentioned this at my last service several months back the dealer never found anything. The smell can be coming from a leak under the hood, just just the heater core / under dash. Watch your temp and see if it's happening when gets warm. 0L ext cab, Converted to Manual M5OD-R1HD. I had the windshield replaced and then I changed out the spark plugs, since then when stopped at a light or simply idling there is a slight scent of gas coming through the fan vents, fan off no smell, engine off fan on no smell, no smell in engine compartment. A leaky heater core can certainly cause what you are describing, but are you 100% certain it's coolant you smell? I recently disinfected my neighbor's car because he had mold/mildew buildup. But the engine smells like burning antifreeze if I use the heat but there is no overheating or leakage of antifreeze…. Q&A for contractors and serious DIYers. They all stem from a leak in the cooling system under the hood. I sent know why I was thinking it was coming through the vents. However when my neighbor stopped the truck, I could smell it through the vents, but once he starts driving there is no smell. when the vents are off, and after about a 15 minute drive, I can see a like haze or smoke coming from the vent system. If you’re using AC, something is most likely overheating, which is not good. Ok so I am having a problem with my antifreeze in my car. If does not work the first time do not continue to add stop leak hoping it will work that is when you can clog up cooling system. Coming into the cabin through the vents. That link you posted is helpful I read about someone saying something was in or covering the cowl vent where the fresh air comes in and that made it smell. Same thing with mine though, all is in perfect shape, no leaks, drips, and levels are fine. Auto Diagnosis - What's That Smell? Coolant containing sweet-smelling (but toxic) ethylene glycol is leaking from somewhere. And that slightly sweet odor is the coolant that's leaking out. Well the other day i noticed that when i start my truck i smell coolant through the vents. Adding this inexpensive and easy to install vent guard to each of your roof pipes can prevent clogging. I am assuming that the wrong coolant ('the green stuff') has not been used, as this could clog the radiator. Its not clutch, brakes or anything. I am assuming it is the heater core that is going bad. If they are leaking, they are near the air intake for the ventilation system and you would be able to smell it through the vents. Keep smelling a slight Antifreeze problem def check the connections I have had mine over the year loosen up and just slightly leak just needed new clamps or needed to be tightened 2000 Ford Ranger XLT 4x4 Offroad, 4. My equinox also fogs up and I am unable to defrost it, the dealer did an pressure testing, said everything looks good, cannot diagnose any problem. Also, 6 months ago I had new shocks / struts installed. I am the caretaker, so I check the house everyday, and also run water in the sinks and toilets couple times a week. I have a 2000 Navigator which recently has developed an antifreeze leak and vapors from the antifreeze seem to be coming through the vents and air conditioning. If you smell antifreeze from the vents the heater core is leaking, you will most likely also have residue on the inside on the windshield. when the vents are off, and after about a 15 minute drive, I can see a like haze or smoke coming from the vent system. However, if you wish to absolutely make sure your water lines are protected you can perform the following. This morning on my way to work, the smell of coolant was obvious and more pronounced and I could still smell that hot oily smell. Coolant smell from the vents Last night I noticed a smell from the A/C vents that smells exactly like coolant. Average failure mileage is 26,000 miles. Smoke from A/C vents. Just remember one point, rv antifreeze is a complete different thing when you compare it with normal automobile antifreeze. The heater core has hot engine coolant flowing through it, bringing heat from the engine into the interior of the vehicle, where it is distributed by the blower fan. Then the service supervisor took it home with him that night and said he could smell it. I smell antifreeze through the heater vents in my 2002 jeep liberty. Dealer wont fix antifreeze smell from AC vents. When I turn on the AC, sometimes I get a nail polish remover smell coming from the vents. And no smell internally through vents. Many owners of Chevrolet Cruze vehicles enjoy an incredibly smooth ride and a silent cabin space when operating the car. It started on the driver's side just behind the driver's seat, moved to under the driver's seat near the middle, and then under the console. That’s bad news because your AC is most likely distributing mold and/or mildew spores throughout your home. As clean as a whistle. My beloved 98 Expy 5. Adding this inexpensive and easy to install vent guard to each of your roof pipes can prevent clogging. Now we get a gassy/rotten smell coming through vents while at traffic. It's a pig of a job to replace it, tedious but not impossible. The first time my heater core failed it leaked onto the passenger floor but the second time it remained contained in the heater and AC box. The air coming from the heat vents smelled like antifreeze. My car has 118000 miles. The car has been checked for leaks and there are no apaprent leaks from the heather matrix or hoses. I'm putting it out there but perhaps it's the heater core in the dash leaking coolant into the vent system. It also has coolant smell when fan is blowing air trough the air vents. i checked the resivoir: bone dry. If your still within the warranty period, take it in to the dealership and tell them your smelling coolant. Getting a rather strong smell of gas when running the heater. Why do I smeel a faint burning rubber smell coming through my vents when driving? 1 Answer. Was driving the other day and the most horrid smell started coming through the vents. The evaporator has cool refrigerant flowing through it, which absorbs passenger compartment heat as the blower fan moves the warm air across it. The spec Motorex coolant for the 1290SA is pink, not green. With fluid in the box you may still get the smell of antifreeze when using the AC or fan, depending on the extent of the leak before a bypass is installed. If your A/C system smells bad check for mildew in the vents or install a new air filter. I unfortunately don't know what fixed it. Coming into the cabin through the vents. Ever since I bought my 2003 TF, there has been a strong smell of coolant when the car has had a good run (although I drove 3 or 4 before buying and all seemed to do the same). " Unclear if this is an intentional move or not on the part of the neighbor, but either way, it doesn't make for a good (or healthy) living situation. I started my car after 2days of idle sitting and smelled under the hood, in the front and rear cabin, and in the trunk and the fuel smell gets very strong in the trunk and rear cabin. The fill level is in the middle and I have looked with a flashlight to see any sign of liquid anywhere and cannot find any. Smell is also now in areas of the second floor of our colonial. It was only coming into two of the four bedrooms through the ducts so we covered those vents and kept the heat on. Musty cat urine smell from vents PLEASE HELP There is a musty cat urine smell coming out of my A/C vents and I am at the end of my rope. ) I live in Arizona, so that's easy for me to say. Was driving the other day and the most horrid smell started coming through the vents. last night the defrost seemed to fog the windows from - Answered by a verified Auto Mechanic We use cookies to give you the best possible experience on our website. Howdy Gang, I need some trusted advise on my 2006 RT. I have looked, with mirrors, and flashlight, and there are no trace of liquid, but you cannot miss the odor, of the vented coolant. My 2018 Equinox is putting out a gas smell if ac is left on before staring engine. The Heater Core. losing coolant and can smell antifreeze through the air vents once the engine is warmed up. This type of antifreeze is the safest to use if you are pumping antifreeze through the entire plumbing system. Occasionally, the problem is actually coming from somewhere else, even though the smell itself is inside the bathroom. I am assuming it is the heater core that is going bad. But if the radiator has a leak, there will be insufficient coolant to cool the engine temperature of your car. 5 +42 on PS4S 265/35/18. Antifreeze smell Just bought a 2006 Trailblazer, & when the heat is on there is an odor of antifreeze coming through the vents. Adding this inexpensive and easy to install vent guard to each of your roof pipes can prevent clogging. Mix about 5 gallons with a full water tank then pump it through the water heater. Whenever I start it from a cold start WITH THE FAN ON, I can smell fumes through the vents. That’s bad news because your AC is most likely distributing mold and/or mildew spores throughout your home. Same thing with mine though, all is in perfect shape, no leaks, drips, and levels are fine. Driving the cat through the colder months and I’ve noticed that there is a smell of burning oil coming through the air vents. When ever the vents are open for fresh outer air without Aircondition ON,it really smells odd (not fresh at all) but smell decreases by the time on a drive. Idle the Jeep up to temp, turn heat on full, and watch the firewall to see if any coolant is purging out of the drain. A garage may charge a lot more depending on how hard the core is to get to. With the climate control off some air flows through with a light scent and with the air on, the warmer I set the temp, the worse it gets. It's a pig of a job to replace it, tedious but not impossible. It could be a line that isn't one that you would normally look at. If you are smelling antifreeze through the vents and it is leaking on the passenger side you would be correct in that the heater core is bad. It's not enough to come through the vents, but enough to smell when you exit the vehicle. You could clearly smell it when the car was stationary in the garage, and a slight whiff came through the vents too. When I pulled the battery out, it had been leaking from the back. The first time my heater core failed it leaked onto the passenger floor but the second time it remained contained in the heater and AC box. On engines with coolant flow through the intake manifold, leaking intake gaskets allow coolant to contaminate the engine. A friend of mine had a similar problem. 1999 dodge dakota steam coming out middle vents, 2000 dodge durango antifreeze in ac vents, antifreeze smoke coming out of vents, dodge durango smoke coming through vents, why would i be getting steam out of the vents of a 1999 dodge ram. on-line searching has currently gone a protracted approach; it's modified the way customers and entrep. Look at the front of your bike, on the left inner fairing you should see the coolant overflow bottle through the fairing plastic. Anyone else have this issue? I don’t have any fuel smell issue so far. its a pain to change. Be sure to clean up the coolant as animals like the taste and it is highly toxic. That greasy film is coolant. Also, 6 months ago I had new shocks / struts installed. Just remember one point, rv antifreeze is a complete different thing when you compare it with normal automobile antifreeze. The possible explanation for the smell may be that the heater core in the vehicle has a slight leak, therefore the smell of evaporating antifreeze will come through the vents until it is all dried up. Stability / Suspension - BMW E90 DIY. Antifreeze is extremely poisonous to both animals and humans. Smoke is a product of combustion, so if you have smoke coming from your vents then you have a big problem. My a/c went out and shortly after, I started smelling antifreeze or odor coming from a/c vents when I started using heater. Many coolants contain a chemical called “ethylene glycol” which can produce a sweet smelling scent once it starts burning off, though it could also be a sign that a radiator hose is leaking or that the heater core is causing the smell. Idle the Jeep up to temp, turn heat on full, and watch the firewall to see if any coolant is purging out of the drain. To prevent outside smells from infiltrating, select the air conditioning option that only re-circulates air that is already in your car. The heater core is basically a radiator, where the hot engine coolant runs through to heat the interior of the car. i mean if you smoke a bunch of joints or something it might smell in the hall. TOM: And it's supposed to be a closed system. Waste is produced at fixtures such as toilets, sinks, and showers. It only does this after it heats up to normal operating temps, and then if you let it idle, you can smell it. 1997-2006 Expedition & Navigator - a/c smells like coolant - Hey guys. The first time my heater core failed it leaked onto the passenger floor but the second time it remained contained in the heater and AC box. Once the antifreeze is in all three ballast zones, use the manual ballast override switches mounted on the dash to empty the tanks. Electrolysis occurs when stray electrical current routes itself through the engine coolant. I don't really know what coolant burning smells like. As far as smell goes, it was discussed in past posts. Smell is also now in areas of the second floor of our colonial. I've also been able to occasionally smell the odor through the vents. #3 A Sweet Smell Is Coming From Your Engine It’s not a normal sign that your car’s engine is sending out a sweet smell; instead it could be a clue your coolant needs replacing. You can smell coolant after the Tacoma warms up. The observatory at One World Trade Center now has an official fragrance, pumped through the air vents. If your coolant level is correct, you should be able to see the color there. I circulation was on "fresh air". On engines with coolant flow through the intake manifold, leaking intake gaskets allow coolant to contaminate the engine. Antifreeze smell Just bought a 2006 Trailblazer, & when the heat is on there is an odor of antifreeze coming through the vents. The dealer could not find anything, but refilled the chamber. Any ideeas? Water leak?. Second, if the smell occurs when a toilet is flushed or water is running, you probably have a cracked, broken, or loose vent pipe also check for a wobbly toilet as you may need a new wax seal. Keep smelling a slight Antifreeze problem def check the connections I have had mine over the year loosen up and just slightly leak just needed new clamps or needed to be tightened 2000 Ford Ranger XLT 4x4 Offroad, 4. I have noticed that sometimes when coming to a stop, I can smell something through the heater. In fact the loss of heat through the vents may be noticed first, before any overheat problems with the engine occur. Thor Thor Jazz 260 Fq RVs For Sale in Virginia: 5 RVs Near You - Find Thor Thor Jazz 260 Fq RVs on RV Trader. I have not felt anything different in terms of loss of hot air coming from the vents. The very next night our neighbor knocks on our door to tell us that she can smell the weed coming through her vents. To prevent outside smells from infiltrating, select the air conditioning option that only re-circulates air that is already in your car. I havent found any puddles of antifreeze in driveway, although I did an oil change a couple weeks back and did need to put a bit in recovery tank. You could clearly smell it when the car was stationary in the garage, and a slight whiff came through the vents too. That's not to say it couldn't be something else underhood leaking and you just happen to notice it more when the air being pulled in through the cowl area is heated. For the past week I've noticed coolant smelling smoke coming through the air vents of my Ford F150. Are you checking the overflow tank? because that can go up and down. When car heated up with removal of ash tray (cold night) you may see steam rising and a smell of coolant and using tissue to find the damp spots. I actually did leak some oil since the last change though when I found out the previous owner didn't install an o-ring on the oil filler neck. RAY: There's a little radiator under your dashboard called a heater core. That way it is documented even if they don't find anything so if something happens afterwards that is related to cooling, you at least have something to fight with (no guarantees, but it helps) to try and keep it covered. I just turned on my heater for the first time this fall.