But, the thermostat in a car is not like the thermostat in a house’s AC/Heater system. Well, that foulness followed me into the car. It is usually fixed as soon as the truck starts moving or I give it a little time so never investigated until now. The heater core in these trucks constantly circulates coolant. Lower radiator hose Thermostat Upper radiatorhose Radiator. Coolant circulates throughpassages in the engine block andcylinder head. If this is the case, small leak in the radiator, or hose in the engine bay, when the coolant evaporates, if you you have A/C set to outside air, the 'sweet' smell of the evaporated coolant will be sucked into the cowl. Carefull here as with mine if I opened the cap it would just about drain the rad in one big. Inside your car is a heater / defroster that has antifreeze coolant circulating throughout. I checked my coolant reservoir tank and it appears to be empty and I am not sure where to go from here. Antifreeze in the cooling system Heater hoses In the heater, hot coolant circulatesthrough a matrix, heating the air which isblown into the car. Auto Diagnosis - What's That Smell? Remember that new-car smell? Actually, new cars haven't had that smell since manufacturers took the solvents out of the glues in the interior in an attempt to. Quick Answer. Can someone describe it? I think I will try to find a bottle of coolant and smell it. You also need to know tailpipe is clear and exhaust system is good. Smell Coming From a Car Air Conditioner I believe many of you might have what happened to my minivan a few years ago and it is the a/c evaporator which is usually behind the dashboard; it accumulates bacteria and mold till it gets strong enough to smell like piss, fish, rotten smell, etc. Antifreeze has a sweet, syrupy odor, and smelling it inside a car usually means there’s a leak somewhere in the cooling system. Other odors may be evidence of problems. Last night after a 20 mile commute - I popped the hood and heard a "sizzling" kinda sounded like an air leak, it was coming from the coolant reservoir cap. this usually can indicate a couple things. Occasional coolant smell and nearly imperceptible coolant loss was traced to the turbo. A vacum controled blend door mechanism allows the hot air to be dispensed. Does it smell like burning antifreeze? Usally it means that the heater-core is going bad. The computer then uses this data to maintain optimum driveability especially while the engine is warming up and until it reaches operating temperature. Replace drain plug. Coolant Smell When Heater Switched On - posted in Ford Galaxy Technical Section MK I MK II: Hi, I have a 2002 Ford Galaxy, diesel. Yeah, sounds like a leak in your heater core - it's buried in the dashboard and passes coolant through it for heating the cabin. The next step is to find out where the water has escaped from - leaking hose, leaking heater matrix (should smell inside cabin if so) Leaking filler cap,. Your problem may not be the exact problem I have but if the leak is very slow, it won't hurt the car to drive it providing you don't let the level get too low. However, I am NOT losing any coolant. No oil in the radiator. Eventually you will notice your windows start to fog up. Also, the window fogs up when the heater is on. Low antifreeze/water level in the radiator is just one reason your car's heater can stop working. Auto Diagnosis - What's That Smell? Remember that new-car smell? Actually, new cars haven't had that smell since manufacturers took the solvents out of the glues in the interior in an attempt to. When you drive the car and have defrost mode on, does the windshield steam up from the vents and smell a. It smells sortof like electronics. But you can put your nose up to the vent and smell an odor. Antifreeze in the cooling system Heater hoses In the heater, hot coolant circulatesthrough a matrix, heating the air which isblown into the car. My car has 118000 miles. THANKS! I did that yesterday and the antifreeze levels are the same. You could also check for coolant dripping from the AC condensate drain. Your problem may not be the exact problem I have but if the leak is very slow, it won't hurt the car to drive it providing you don't let the level get too low. Hot coolant from the engine flows through there and transfers heat to the. What most people don't know is that a car's heater core is also responsible for circulating warm air in a vehicles passenger cabin. Top the radiator off, drive the car with the heater full on, then park it and look for the steam. The Engine Coolant Temperature Sensor (“ECT” for short) is an analog sensor which, as it’s name says, measures the temperature of the coolant and feeds this data to the on-board computer. Auto Diagnosis - What's That Smell? Remember that new-car smell? Actually, new cars haven't had that smell since manufacturers took the solvents out of the glues in the interior in an attempt to. Smelling antifreeze when I run heat. Plenty of heat in the car. Put it in the garage over the weekend after a long drive, and the smell was overwhelming. There’s no obvious green, brown or black gunk. Mechanics say your car heater can break down for several reasons. Best Answer: have your heater core checked out, also check your floorboard on your front passenger side to see if its wet or damp. When you drive the car for awhile see how long the rad holds pressure. Antifreeze has a sweet, syrupy odor, and smelling it inside a car usually means there’s a leak somewhere in the cooling system. After thorough flushing (keep flushing for a little bit after you no longer smell antifreeze) turn off city water or pump. Smelling antifreeze when I run heat. If you smell that sickly sweet coolant smell inside the car, consider it an emergency situation – because coolant is leaking from the heater into the passenger compartment and if not found an fixed, you’ll be dealing with an epic mess that might require ripping out and replacing the carpets. If your car smells like antifreeze but not overheating, the components you should look into are: 1. What most people don’t know is that a car’s heater core is also responsible for circulating warm air in a vehicles passenger cabin. This sickly sweet smell is far from edible. If you notice your heater is producing an antifreeze burning smell then there is a good chance that antifreeze is leaking into the heating system. I have searched for an antifreeze leak and have found none. i have a very strong coolant smell inside the car when heat is on and a strong coolant smell outside of the car. If you have a burning smell coming from the heater and you have clean it, then it is a good idea to have it checked out to make sure nothing serious is wrong. This component circulates warm air inside the passenger cabin. Update: What will happen if I don't get it fixed right away?. Your problem may not be the exact problem I have but if the leak is very slow, it won't hurt the car to drive it providing you don't let the level get too low. last week he used this radiator flush from Waynes and the instructions are to put the heater on full and let the car idle for about 20 mns. A crack in the heater core will discharge antifreeze and you will get the odor inside. Does your car smell like antifreeze when you drive it? If so, this could be a sign that your car’s heater core could possibly be leaking. Also to clarify that as your car looses coolant, air pockets form in the engine and system. It's not overheating, and once it sits and cools down a bit, the smell goes away. Most definetely sounds like a bad heater core. As I was in the sun, I can see a fait mist but it went away as quick as it came. Air that blows in smells damp, musty, or like mildew and mold; Your cabin does not warm up in cold weather, or is just a little warmer than outside; The defroster takes longer than typical to operate, or does not operate; Your heater or A/C only functions when driving, not when idling, or quits blowing when the car is stationary. The mold isn’t visible. (less in the winter) I'm fussy about my coolant level. Low antifreeze/water level in the radiator is just one reason your car's heater can stop working. Antifreeze was developed to overcome the shortcomings of water as a heat transfer fluid. And the way it gets in is through a leaky heater core. Fins attached to the core tubes serve to increase surface for heat transfer to air that is forced past them, by a fan, thereby heating. i have a very strong coolant smell inside the car when heat is on and a strong coolant smell outside of the car. Antifreeze smells sweet, and when it leaks into the heater box, that smell will get propagated throughout your car. It may be from toxic liquid ethylene glycol, otherwise known as antifreeze or engine coolant. Antifreeze flows through the engine and removes excess heat so that you don't have an engine meltdown. No smell of antifreeze in the car at all, the floors are dry and no extra moisture when using the defroster. A car’s coolant system operates on a loop, pumping a mix of water and antifreeze to your radiator to regulate engine temperature. Coolant should always be mixed with water, preferable distilled water, because water displaces heat better than coolant / antifreeze (coolant and antifreeze are one in the same) however the coolant / antifreeze boils at a higher temperature than water alone and freezes at a lower temperature than water. I smell coolant after a good run but I can't find any leaks, anywhere whatsoever. Traveling down the highway with the windows closed and the heater blower on, any antifreeze smell would indicate a defective heater core under your dash. The antifreeze level is not low. Coolant Smell along with no Heat Hey guys, recently my heater has slowly dwindled now and even after 15-20 min of driving it still seems to be weak! Blowing air pretty much with a bit of heat - and there is a distinct coolant smell (although sometimes it can also mix with the fuel line problem known to 02 WRX's and cause even more. But if the burning smell from car still presents even after you use the heater regularly, then you may have particles or some debris clogging the vent. There are several potential reasons for the odor. This sickly sweet smell is far from edible. Many people find that a plastic bag stuck in the engine will create a burning smell. It was leaking from the Water Housing Gasket before, and I replaced the gasket, removing all the excess and such, maybe I just put it on wrong?. Still scratching my head on this. A leaking heater core is the most likely cause. It is much more noticeable when the heat is on, of course. A crack in the heater core will discharge antifreeze and you will get the odor inside your car. This valve is right above the exhaust on the 2. I think maybe you have a slight leak in the coil(s) of your heater, and when you activate the *heating* system, the hot engine coolant that is diverted off of the water circulating pump begins to leak -- probably in a small spray that evaporates in the fan-blown air circulation and releases an unpleasant hot anti-freeze-laden-vapor smell into the car's passenger compartments. All GM cars dont realy use antifreeze, they use dex-cool And when it burns, it smells like a cat that was on fire is extinguished by a skunk urinating on it. I was hoping it would stay out there and we could drive off into the sunset. Smells like gasoline coming out from my car heater, why? The tank for the antifreeze is full. Please register to post and access all features of our very popular forum. Like Aurin suggests it could be coolant but there is several other types. the heater, I smell inside the car, what smells like antifreeze. (less in the winter) I'm fussy about my coolant level. If one or more of these issues is present, your vehicle may blow out cool air rather than heat: Not enough coolant in the engine; Problems with the heater core. Leaking coolant smell. Anti-freeze smell is a very sweet smell and is usually detected inside the vehicle. These new "permanent" antifreeze products will wreak havoc on old radiators made of copper, brass and lead/solder. either u have a coolant leak in your heater core, or a coolant leak on your engine. Re: Burning Fluid Smell - Oil or Antifreeze? Hi Guys, I have found a cure for the burning oils smell when the car is idling with the heater or air con on. The upper radiator hose, thermostat housing, lower radiator hose, heater core hoses, broken radiator, broken coolant reservoir can all contribute to coolant smell when these components start to leak. I know for sure the odor is coolant but can not find a leak for the life of me and like I said, engine runs at avg. Eventually you will notice your windows start to fog up. If I turn the temp down no smell. i've had my car back for a week now and again i have the strong coolant smell inside and outside of my car. If it's smells sweet, could very well be the heater core. If your car smells like antifreeze but not overheating, the components you should look into are: 1. In late 2016 my upper heater hose swelled up like a balloon, and then burst, another 150 dollar repair. Unlike antifreezes used for automotive application, assortment of boat antifreezes is more complex. A heater core is a radiator-like device used in heating the cabin of a vehicle. Has coolant smell when heat is on (any setting). Turn the defroster on (hot and defroster vents, no AC) and see if you get steam on the windshield. The heater core is responsible for circulating warm air in the car’s passenger cabin. I even sprayed Febreze in the vents thinking it was residual. I can walk in a parking lot and tell if a car is leaking coolant. This is normally in the heater motor. So if it spilled, it was at the factory. below zero. Another insisted that I put some in his 34 Packard Eight. The smell was like cumin and garlic mixed together. When your car starts to overheat, it’s essential that you pull over and call an auto repair shop for assistance. There are several things you can do to ensure your vehicle won’t overheat on a long road trip and since I’m nervous about my rental car, I want to know what to do if the engine does overheat. No smell of antifreeze in the car at all, the floors are dry and no extra moisture when using the defroster. If your air conditioner leaked out in such a manner that you could smell something in your car, it would have been a very large leak and the smell (of the oil)would have passed quickly. I have also checked under the hood, dash, etc, and I don't see any signs of leaking. The morning commute can be stressful. If someone is brave enough, they can feel the entrance and exit hoses to the heater at the firewall, from inside the engine bay. On this model, the labor to remove and install can be very high. ANyone have any ideas? I spoke to my dad, who thinks that the car has run out of coolant. This kind of a problem means it's a good idea to take your car into a professional. Coolant that smells like fuel. The heater itself could be broken causing a burning smell from the antifreeze that is leaking into the heater vents. this usually can indicate a couple things. But you can put your nose up to the vent and smell an odor. If you can do the work yourself, a heater core can be replaced for $50 or less. Reasons Your Car Won't Heat | Heater Stopped Working Heat in automobiles is supplied by hot coolant circulating through the engine. But I can smell it. losing coolant and can smell antifreeze through the air vents once the engine is warmed up. A heater core is a radiator-like device used in heating the cabin of a vehicle. I will try this. Sweet smelling exhaust There are plenty of smells emanating from your car and some of them are perfectly normal, even if they are annoying. I have no clue what could have caused this. Lower radiator hose Thermostat Upper radiatorhose Radiator. Somewhere the exhaust was getting into the water jacket and that was pushing the coolant out. "Freon" has no smell, unless its exposed to a flame. What is smells like: Refrigerant smells a little like the coolant in a car radiator because coolant is a type of refrigerant. As the subject says, I smelt something burning when I turned on the heat today while on my way to the airport. If you use an additive to try and stop the leak it might do it but it hasn't fixed the problem. I was outside applying coolant to an overheated car,though the coolant compartment had a leak so I applied it under the radiator cap. After warming up it runs normal. This is normally in the heater motor. The plastic housing of these valves can crack and the engine will start to loose coolant. Which is how they check at a shop, checking to see if combustion gasses are present within the coolant, can't say I've seen it so bad that you can smell it, but this is a Porsche we are talking about here. In January of 2017 my coolant overflow tank started to get random pinholes throughout the. The radiator has the coolant/antifreeze, which keeps the engine cool. I had one in my car that developed a very slow leak along the bottom seam. losing coolant and can smell antifreeze through the air vents once the engine is warmed up. Problems with the Heater Core. Open the hood no smell and no visible leak. Given that it is summer and your car heater is off, so to speak, it would be very odd that your heater core is leaking but you never know. Its been making the smell since the day I bought it. The heater core could also cause this problem. As soon as step on the gas and start moving, it dissipates. It might be coming from a leaky radiator cap or the radiator itself, especially if you smell it outside the car. Coolant Smell along with no Heat Hey guys, recently my heater has slowly dwindled now and even after 15-20 min of driving it still seems to be weak! Blowing air pretty much with a bit of heat - and there is a distinct coolant smell (although sometimes it can also mix with the fuel line problem known to 02 WRX's and cause even more. But if your car’s heater suddenly stops working in the middle of winter, it can make it downright miserable. tthere is a antifreeze/coolant smell in my car, unable to get rid of it. This may lead to some serious problems and damage to your car, so fixing it as soon as noted might save you from some unnecessary expenses. A heater core is a radiator-like device used in heating the cabin of a vehicle. sweet smell is coolant, the thing is you said when the heat is on a bad heater core will smell like coolant in the car pretty much all the time even with the heat off. if it is, it is definantly your heater core since its located right behind the dash on the passenger side. I got my car back from the dealership the afternoon of January 29th. Menu Why Does My Heater Smell? 07 March 2015 on Heating, carbon monoxide, Tips. If you leave the dial all the way on cold it should cut down on how much of the smell/steam you get, but you're gonna wanna replace/repair that soon. The smell was like cumin and garlic mixed together. TOM: It IS possible for antifreeze (also called coolant) to get inside the passenger compartment. I was browsing the archives and looking up a hot topic on heater core failure. Open the hood no smell and no visible leak. Antifreeze was developed to overcome the shortcomings of water as a heat transfer fluid. Problems with the Heater Core. Check the coolant overflow bottle. This is normally in the heater motor. Car AC Smells like Burning Plastic When the air conditioning in your car blows out a burning plastic smell, you should check your car or have it looked it by a mechanic. However, maybe the heater itself is broken and the. It's coming from under the hood. IGOTACUMMINS is an online forum and community for all Cummins Turbo Diesel enthusiasts. I am replacing coolant at a rate of about 1 gallon every 3 weeks and upon startup the Tahoe runs very rough and spews white smoke. I'm going to check the coolant tank and oil level when the truck cools down a bit more. There are a lot of reasons your heater might smell and the severity of the situation depends on a few things like the timing of the smell, the type of smell and where it is coming from. I held my breath and used a glove tk protect myself from the heat,but in the process of it spraying everywhere I moved away and took a breath. A vacum controled blend door mechanism allows the hot air to be dispensed. Before going to the repair shop, though, you can check to see if the following reasons are causing that unnerving scent. 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. This is due to the build up heat of plastic insulation on wires, causing melting and the burning smell in your unit. Coolant Smell When Heater Switched On - posted in Ford Galaxy Technical Section MK I MK II: Hi, I have a 2002 Ford Galaxy, diesel. It draws warm the heat from the coolant and then spread it across the cabin. I've got a new heater core sitting on the shelf waiting to go in when I get time but since the car is only used for local or work commute when I'm home I haven't been in a hurry. It's not leaving spots, there's no smoke, and the heater works fine, blows very hot. Mention the smell when you drop the car off and ask them to check if you may have a small leak on the heater. Car smells like antifreeze outside One of the most common coolant smells is from a leaky heater core, cracked radiator, or damaged coolant hose. A leak big enough for you to smell would let all the refrigerant out in a few minutes and you would hear a hissing sound. A fault in the electrical system of your car or truck can often present as a sudden burning rubber smell. My car has 118000 miles. I noticed the smell the middle last week. no heat with antifreeze smell 5 Answers. Occasional coolant smell and nearly imperceptible coolant loss was traced to the turbo. I would avoid any of the 'stop leak' products. Heat requests are usually drawing air from outdoors and any leaks COULD make an odor - even strong. I will try this. People often find plastic bags and other objects stuck in the engine, causing the frustrating issue that car smells like burning plastic. From the location you give it could be oil leaking out from the valve cover which while it may sound serious is likely just a gasket that needs replacing ($20 or so in parts). However, maybe the heater itself is broken and the. If there's a leak in the heater core, you'll likely notice the smell of antifreeze inside your vehicle. This has been true for about six weeks. The odor itself will typically drift in through the AC ducts, and it may not last for too long, as the burnt fuse doesn’t make a continuous smells like some of the other problems on this list. Coolant has a sweet smell like candy, if your car is leaking coolant or antifreeze, you will notice the sweet smell coming from your engine compartment or inside your vehicle if you heater core has failed. What Happens To A Car Without Coolant Or Antifreeze?. the only thing that smells like anti freeze is the air coming from the vents. If you smell burning from your AC unit, you probably have an electrical problem. Coolant Smell. Your problem may not be the exact problem I have but if the leak is very slow, it won't hurt the car to drive it providing you don't let the level get too low. ” “When I park my car and walk by the hood it smells. 2005 tj smells like coolant when air/heat is on. Which is how they check at a shop, checking to see if combustion gasses are present within the coolant, can't say I've seen it so bad that you can smell it, but this is a Porsche we are talking about here. This kind of a problem means it's a good idea to take your car into a professional. Whether or not the car got all foggy when the heater core broke, an unmistakable sign of a leaking heater is a fruity, sickly-sweet smell inside the car. The radiator has the coolant/antifreeze, which keeps the engine cool. Electrical Short. If you smell maple syrup outside the car, this might mean that you have a leaking radiator cap or that the radiator itself has a leak. It doesn't take much coolant to make a whole lot of stink, especially if its in the heater core. You will see no leaks in the engine compartment. Chevrolet Cruze Coolant Leak Causes Bad Smell for Drivers Published on February 27th, 2017 A number of Chevrolet Cruze drivers have reported a bad odor coming from their vehicle while the heater is running. Traveling down the highway with the windows closed and the heater blower on, any antifreeze smell would indicate a defective heater core under your dash. You will more than likely see coolant dripping from the drain tube located in the plenum part of the heater case that is mounted to the firewall if the leak is bad enough. Average repair cost is $700 at 29,200 miles. Before they leaked so much, it would drip onto the exhaust downpipe and just smell like anti. Not only would the inside of your car feel like an ice box, but a broken heater can prevent your defroster from blowing warm air to your windshield to eliminate ice and fog, which can pose a hazard while driving. No coolant in the oil. theres no apparent leaks and it isnt losing coolant. 2012 Chevy Cruze purchased in August 2012. TrailBlazer - Antifreeze smell - Just bought a 2006 Trailblazer, & when the heat is on there is an odor of antifreeze coming through the vents. if it is, it is definantly your heater core since its located right behind the dash on the passenger side. Mechanics say your car heater can break down for several reasons. if not, you could have a coolant leak in the motor and/or hoses and you smell it as it evaporates from the engine heat. IT'S MAKING ME MENTAL!. com I have been to his seminars as well as watched many of his programs and he is a wealth of info. Car smells like antifreeze outside One of the most common coolant smells is from a leaky heater core, cracked radiator, or damaged coolant hose. Burning Smell: You will get some burning smell when your car engine gets extremely hot. What most people don’t know is that a car’s heater core is also responsible for circulating warm air in a vehicles passenger cabin. I even sprayed Febreze in the vents thinking it was residual. That truck had coolant leaks till I got rid of it 7 years latter. Electrical Short. Whatever the issue, it's helpful to know some of the common issues that can come with a weird sound or an odd smell. We had been topping off the coolant in his car for along time, and were having difficulty finding the leak. What is smells like: Refrigerant smells a little like the coolant in a car radiator because coolant is a type of refrigerant. But if your car’s heater suddenly stops working in the middle of winter, it can make it downright miserable. It doesn't take much to smell antifreeze and it probably evaporates before you would see any trace of a leak. One of my good classic car pals lost a $5000 honeycomb radiator to permanent antifreeze. I originally contributed it to new car smell. Last night after a 20 mile commute - I popped the hood and heard a "sizzling" kinda sounded like an air leak, it was coming from the coolant reservoir cap. Turn on city water or pump one last time. G6 Car Repair Help. If the heater core of your vehicle is leaking antifreeze, that can cause a fairly intense smell inside your car. Inside your car is a heater / defroster that has antifreeze coolant circulating throughout. The radiator has the coolant/antifreeze, which keeps the engine cool. In the last week I keep noticing, when I first start my car the vents smell like antifreeze. Another insisted that I put some in his 34 Packard Eight. this usually can indicate a couple things. Best Answer: have your heater core checked out, also check your floorboard on your front passenger side to see if its wet or damp. Also to clarify that as your car looses coolant, air pockets form in the engine and system. Also, a heater component could be melting, and this could smell like plastic too. Download Image. Can't see any spills or leaks from the engine bay or on the ground. This may lead to some serious problems and damage to your car, so fixing it as soon as noted might save you from some unnecessary expenses. After thorough flushing (keep flushing for a little bit after you no longer smell antifreeze) turn off city water or pump. For a long time you will still smell the glycol, so I would bite the bullet and pull it out and get it fixed, unless you like the smell of glycol in the morning. If there's a leak in the heater core, you'll likely notice the smell of antifreeze inside your vehicle. And how hard is the core to remove? The air is still ice cold and the heater is still really hot but the smell seems to be getting stronger. Smells like gasoline coming out from my car heater, why? The tank for the antifreeze is full. Can someone describe it? I think I will try to find a bottle of coolant and smell it. my 06 gran prix 3. We have a gasoline smell coming from the heater. Electrical Short. Best Answer: have your heater core checked out, also check your floorboard on your front passenger side to see if its wet or damp. Also, if you have a slimy film coating the inside of your windshield, that would tend to confirm that your heater core is leeching antifreeze into your cabin air stream. I was outside applying coolant to an overheated car,though the coolant compartment had a leak so I applied it under the radiator cap. It's like hitting your head against a brick wall and. Replace drain plug. Electrical Short. I was hoping it would stay out there and we could drive off into the sunset. Not only would the inside of your car feel like an ice box, but a broken heater can prevent your defroster from blowing warm air to your windshield to eliminate ice and fog, which can pose a hazard while driving. If your car smells sweet like pancake syrup, it is probably due to your antifreeze coolant that circulates in your car’s heater and/or defroster. I have an 06 Chevy Impala. How To Choose The Right Car Coolant. last week he used this radiator flush from Waynes and the instructions are to put the heater on full and let the car idle for about 20 mns. If your car smells sweet like pancake syrup, it is probably due to your antifreeze coolant that circulates in your car’s heater and/or defroster. Turn on your heater and if it smells ten time worst that thats it. But if the radiator has a leak, there will be insufficient coolant to cool the engine temperature of your car. It works by drawing heat out the antifreeze/water mixture and then siphoning it through the cabin. But if the burning smell from car still presents even after you use the heater regularly, then you may have particles or some debris clogging the vent. Has coolant smell when heat is on (any setting). Does it smell like burning antifreeze? Usally it means that the heater-core is going bad. If you do not service it it can be a lot worse. We had been topping off the coolant in his car for along time, and were having difficulty finding the leak. In late 2016 my upper heater hose swelled up like a balloon, and then burst, another 150 dollar repair. Turn on city water or pump one last time. Replacing a broken pipe or hose is often quite simple and fairly inexpensive. The heater itself could be broken causing a burning smell from the antifreeze that is leaking into the heater vents. Electrical Short. Other odors may be evidence of problems. Is this normal? Is it possible that coolant was spilled somewhere and this is/was causing this? Don't tell me that it's a headgasket!!! Thanks. Like sniffing a circuit board. This component circulates warm air inside the passenger cabin. Tonight was a colder night and my wind-shield got a "slime" on it from the heat - I believe it was antifreeze and it smelled so bad. In several cars you will find plastic coolant tanks. tthere is a antifreeze/coolant smell in my car, unable to get rid of it. Coolant has a sweet smell like candy, if your car is leaking coolant or antifreeze, you will notice the sweet smell coming from your engine compartment or inside your vehicle if you heater core has failed. probably got a dose of coolant laden air through the fresh air vent when the top hose blew, once coolant is on the heater core it will smell like coolant for ever until U pull the core and thoroughly clean it. Coolant Smell along with no Heat Hey guys, recently my heater has slowly dwindled now and even after 15-20 min of driving it still seems to be weak! Blowing air pretty much with a bit of heat - and there is a distinct coolant smell (although sometimes it can also mix with the fuel line problem known to 02 WRX's and cause even more. I say slightly because if it smells very gassy you may have other problems that need to be looked into. Air that blows in smells damp, musty, or like mildew and mold; Your cabin does not warm up in cold weather, or is just a little warmer than outside; The defroster takes longer than typical to operate, or does not operate; Your heater or A/C only functions when driving, not when idling, or quits blowing when the car is stationary. In January of 2017 my coolant overflow tank started to get random pinholes throughout the. Turns out, it was just good ol' car funk smell. The smell of coolant is notoriously strong, you can smell antifreeze a mile away from just a pinhole leak that can go on for months without your coolant level even dropping. This only happens when I first turn on the heat or defroster when my car is cold. A car’s coolant system operates on a loop, pumping a mix of water and antifreeze to your radiator to regulate engine temperature.