Gurgling From Heater Core

Has anyone in here ever had these symptoms? To complicate everyone's thoughts, it also has gone thru 3 heater core units in the last year (fixed under warranty)! Welp, any opinions on this deal? What else is there besides the thermostat and heater core. 2004 grand prix. With this type of system, a gurgling noise can occur whenever the engine is running. Heater core gurgling - Answered by a verified Cadillac Mechanic. If there is air still in the system, the fluid in the reservoir will be empty. Check the hoses first, but thanks to their being sheltered from the elements, hose failure at the heater core is probably less common than the core itself developing a leak. I was able to make it go away when I adjust the passenger side to full heat. Question from Rex (1959): Here's a question regarding the heater in my '59. Just turn the radio up. Waterfall Gurgling noise in the Heater Core I bought the car in the fall of 2014, drove it home approximately 500kms and didn't drive it again until this summer after doing a plethora of work to it. There are only two "liquids" running through there by design - coolant (for the heater core) and refrigerant (which is liquid under pressure) through the evaporator. I know this is a well worn theme but I'm having no luck shifting the air out of the heater core in my 96 Legacy EJ22. I have purchased a heater core already and I am planning to do that this weekend and Im just wondering since you guys seem to. The hose from the outlet fitting (manifold) always goes to the bottom heater core fitting, and the hose from the inlet fitting (water pump) always goes to the top core fitting; that way the core is always full of coolant and there's no "gurgling" sounds from air bubbles audible from inside the car. and noticed that my car makes a gurgling noise when i first start the engine and. Double check heater core for restriction. I have had a gurgling sound coming from the heater core in my 2001 AUG Passat. A bad heater core will often make a lot of grinding, swooshing, clanking, and sometimes even gurgling noises. 3-liter V-6 in it. Answer: Sloshing is almost always caused by air in the cooling system, which allows the coolant to drain out of the heater core inside the dashboard when the engine is off. The excessive air in the system will mix with the coolant and create the gurgling noise. sometimes temperature fluctuating on gauge, other times right up on bust! heater. Just a note of caution here - yes the gurgling is air mixed with coolant flowing through the heater core. If it’s not, flushing it may solve the problem. Car Battery Terminal Voltage Chart. Thanks everyone. Reverse flushed the heater core plus coolant flush. The bubbling sound went away but the rear heat intermittent issue is still there. Connected my garden hose and flushed it both ways 6 times. Open the radiator cap, the one on the radiator if it has one and remove the reservoir cap too. I just know that if you see fluid on your passenger floorboard then you have a problem. Do i need to bleed the system with the nose up high to get air out? I am not loosing coolant judging by the expansion tank but i do get a worrying whiff of coolant when i first turn on the heater but I have been ignoring this!. If the problem is persistent, try bleeding the air out of your cooling system, since trapped air bubbles are a major cause of both overheating and gurgling. I flushed the system by placing one of those 'flush-n-fill' tees into the heater hose. B) Evaporator condensation not draining properly. There is a gurgling sound coming from behind the center console every time I accelerate from a stop. Believe me fellows I searched and reviewed all posts/relating to this. If recently. Using 3/4" hose and 2 -1/2" NPT X 3/4" barbed hose adapters is possible, but kinking the hose is not, a couple 45 degree elbows should be used and route the hose so it does'nt kink. But on thursday I started to smell radiator fluid/water smell (like off water / cat piss smell) just faintly, but on Friday I started to get visible steam coming out of my vents with climate control on. One likely cause for the noise, reports American Honda Motor Co. Doesn't matter what hose goes where. com: Car complaints, AC / heater problem. some gunk may flush out, then re install it and fill it up. If you bleed the air out using the return hose on the core you can get it to work again for a while. 3) Over the past 3-4 days, noticed a gurgling sound under dash when accelerating, only when cold. When you start first thing in the morning, you hear gurgling as the air is displaced upward by water flow. I've recently noticed a gurgling water sound from inside the dash when accelerating away from stoplights. New heater core arrived quickly, well packaged, same as original. And it could be the source of the sound, although it usually sounds like its coming from under the car, but on the passenger side and I suppose it could be from the heater. I have a 2001 Civic LX with 82000 miles and I'm hearing a "gurgling" sound coming from behind the dash. I have a water like gurgling sound coming from under the dashboard when I first start the car and then when I accelerate, I have flushed the heater core thinking it might be air in the core. I have a 2003 Camry. The gurgling effect from your hot water heater may start when you try to run a few appliances at the same time. I still do not know how the engine did not overheat. Best Answer: You're low on coolant and you are hearing the air pocket in the system as it goes through the heater core. There should be a dedicated gas shut off valve on the gas line leading to the tank. If there is air still in the system, the fluid in the reservoir will be empty. Discussion in Curious if you guys park at an angle with the nose pointing down and that's causing air to get in the heater core. B) Evaporator condensation not draining properly. When the engine is first started and the thermostat remains closed, a hot water bypass line permits heated coolant flow to the electric pump and heater core. As mentioned here before, the heater core itself is an inexpensive part, however it is buried in the dash requiring 8-10 hours of labor. Improper bleeding of the engine's cooling system results in air pockets getting trapped in the core. Sometimes the heater will blow out hot air and work beautifully, other times. 0 sees (maybe water pump design too) causes the system to build too much pressure and the heater core is the weak link. They say the factory control for the coolant flow to the heater core is varying the shape of the heater-hose fitting in the intake manifold. I know this is a well worn theme but I'm having no luck shifting the air out of the heater core in my 96 Legacy EJ22. On some vehicles the use of a coolant flow restrictor slows the coolant flow and eliminates the gurgling sound. On a part clogged heater core I have reversered hosed and let it flow backwards to help flush it out. 0L Turbo that should be the sound of the air in the coolant system @ the heater core (no air in system, no gurgling). When I revved up the engine a bit while in park, I heard a sort of water gurgling sound coming from underneath the dash. Technician A says this is air trapped in the heater core. It's common to hear gurgling under the dash if there's air in the system -- coming from the heater core. Revision D – 02/07/2009. My sister in law had her heater core replaced in her 04 due to it leaking and has less heat with the new heater core. Ever since, when the engine gets hot and is shut down and restarted several times (like when doing local errands), I get a gurgling noise (which I assume is air) from inside the center of the dashboard. T, Oct 29, 2017. I have a loop hot water system (forced hot water). Seems strange to have a heater core fail so quickly. With this type of system, a gurgling noise can occur whenever the engine is running. 1978 - 1996 Big Bronco - Gurgling Sound From Heater Core - I've had a gurgling sound coming from the heater core for about a year. According to the Popular Mechanics website, a common cause of a car's heater not working is a buildup in the heater core. I have a 2001 Civic LX with 82000 miles and I'm hearing a "gurgling" sound coming from behind the dash. Hey shabalad0oooooo, I'm sorry to hear your heater isn't blowing hot air! Was your dealer able to offer any assistance? I would be happy to look into this concern further, if you would like to PM us your name, contact information, VIN, current mileage, and involved dealership. Car makes a bubbling/boiling noise when car is turned off making your gurgling noise and the end effect was the heater core bursting on him on his way to work. Generally speaking, gurgling noises are the sound of air or water moving around in your cooling system. Many people use a water heater instead of a boiler for radiant floor heat because it COSTS LESS. 2004 grand prix. The more I read, I think I have it wrong. com! Free shipping over $300, fast delivery & everyday low pricing!. Air in the Heater Core: Your car's heater core uses coolant to provide the heat for your cabin. Air in the Heater Core: While the engine is running coolant is being pushed through the heater core. Took it into the dealership and was told we needed to replace the evaporator core. It is very possible that you have a blown/leaking head gasket. However, the factory recommends the top line go to the pump. All Classic British products are warrantied to be free from defects in material and workmanship for 2 years from the date of invoice. Audi gurgling sound: Sign In Some carss used hidden restriction for heater input line to slow the flow thru core and a side effect was it was quieter. When water is heated, naturally occurring minerals separate and settle at the bottom of a water heater. The air rises to the top of the cooling system, and this produces an air fluid level inside the heater core. At theatre now so figured I could make it home and diagnose in am. 3 - Lack of coolant 4 - Engine is not warming up (stuck thermostat. It is also possible you have a kink or pinched hose, might want to investigate. 0 Viper V10 415 hp 1997 Dodge Ram. I have a loop hot water system (forced hot water). Heater core replacement and dash removal on 1994-1997 Dodge Ram pickups that don't. How to Improve Your Chevelle Cooling System – Step by Step It is extremely common for a per­formance Chevelle to run hotter than it should. Quality water heaters. Reason #2: Problems with Heater Core. My Bronco is a 95 EB, w/5. When you’re fitting a replacement Subaru engine or Subaru radiator, it can be difficult to get the trapped air to bleed out of the cooling system. Lift the hood and check the temperature around where the heater core hoses enter the heater core box. You may already have your own system to bleed a Subaru cooling system, if not here are some ideas we found will work. Air in the Heater Core: While the engine is running coolant is being pushed through the heater core. Mine does it every once in a while. , Heater core replacement overview 1999 Mazda 626 Install Remove Replace , 2001 Audi A4 V6 Heater Core Flush , Replacing Cooling System Heater Core Hoses : How to Drain a Car's Coolant , How to remove Mazda 3. Pour coolant into the other to fill the heater core and minimize any air pockets. "The gurgling noise is in my truck also. I can also hear slight gurgling noises from the heater core/piping, especially after some spirited driving. RAM 1500 GURGLING HEATER CORE FIX NO REPLACEMENT INSTALL TRUCK. 1978 - 1996 Big Bronco - Gurgling Sound From Heater Core - I've had a gurgling sound coming from the heater core for about a year. I have a 2008 Pruis that acts like it has a plugged heater core but I wonder if there is more to it. It could mean that air is somehow getting into an otherwise pressurized-liquid system, or it could mean that the the last time the coolant was changed, some air was. I was smelling antifreeze earlier after I had taken the truck for a drive. You'll be pumping coolent straight through the block, which is good. You may already have your own system to bleed a Subaru cooling system, if not here are some ideas we found will work. The answer is no, the heater core flows either way. I have bleed the system and regardless the system will purge itself after the car has been run. When you’re fitting a replacement Subaru engine or Subaru radiator, it can be difficult to get the trapped air to bleed out of the cooling system. It can also cause a moaning noise from the heater core. This guide is about Ford ranger heater not working. Heater core is clean. Is the heater core under there? That is the only thing I could think of making that sound. They should be color coded so you can't screw it up. However with modification I was able to use this part on a '95 Range Rover to end the Heater Core Gurgling. Your answer will not be. When you start first thing in the morning, you hear gurgling as the air is displaced upward by water flow. I think that it has something to do with the coolant being slightly low. The problem stretches back to the 2010 Chevy Cruze models and we've seen them on the 2016 models as well. Looses heat at lower rpms, gurgling heater core when shut down, espar overheats Lately my espar won't run full cycle unless the truck is running. Gurgling noises as described is genereally air trapped in the heater core. Automotive Recalls and Technical Service Bulletins for 2008 Ford Truck F 250 4WD Super Duty V8-6. Tried up on ramps, running the motor till the fans come on and thermostat opens, spill free funnel used. Just turn the radio up. The gurgling noise also indicates air. Has anyone in here ever had these symptoms? To complicate everyone's thoughts, it also has gone thru 3 heater core units in the last year (fixed under warranty)! Welp, any opinions on this deal? What else is there besides the thermostat and heater core. Just a note of caution here - yes the gurgling is air mixed with coolant flowing through the heater core. So learning how to drain a water heater and flushing offers a payback in lower energy bills and extended heater life. 2 l engine - overheating, coolant disappearing, within 15 minutes engine redlining, can sometimes hear gurgling noise coming from somewhere inside or under dash(?), when heat is turned off. With the cap off run it with the heat on full blast, add coolent as nessasary and when the bubbles stop it should be done. I found another problem with my "new" 1992 F-150 today. The pump is not leaking or making noise. You might have a wind shield leak. I think that it has something to do with the coolant being slightly low. My condolances if you do. Still gurgles, but seems less pronounced now. I don’t think it smells like antifreeze. Ethylene glycol coolants smell like sweet fruit juice. Never did figure it out. Tried up on ramps, running the motor till the fans come on and thermostat opens, spill free funnel used. Welcome to one of the many moronic things AMC did. if it is because of a clogged up heater core or a faulty water pump it wont. My gurgling noise only happens with vehicle running and A/C on cool. The 2012 Ford Fusion has 1 problems reported for gurgling noise under dash. Clicking noises – These noises may be caused by a failing or defective thermostat. Thanks everyone. Does anyone have expirience with this issue and is the dealer headed in the right. A bad blower motor could make a "wild, loud" noise sort of like the one you complain about. Start by checking the fluid level in the reservoir, filling it to the "full" line when the engine is cold. I normall do not believe in any anti-leak stuff. Ethylene glycol coolants smell like sweet fruit juice. To "flush" the core I turn the heater on and the gurgling goes awayuntil I start it again later. You are hearing the increased flow of coolant to the heater core as you come off idle, as your auxiliary pump is non-functional. I have air trapped in my heater core. 3-liter V-6 in it. I have a water like gurgling sound coming from under the dashboard when I first start the car and then when I accelerate, I have flushed the heater core thinking it might be air in the core. Hanging from a tree as casually as baggy jeans, the swing was the essence of leisure, of Southern…. Technician A says this is air trapped in the heater core. T, Oct 29, 2017. When you burp the coolant, always make sure the heater control is turned all the way to the "hot" side, and make sure the car gets totally warmed up before you finish. Too cold to be draining and flushing the entire coolant system so spring time I'll hit that but for now just trying to get the rear heat working again. If this does not solve the issue, then there is a restriction in the heater core. You should get bubbles coming up the top of the radiator. Choose top quality brands Metrix, Spectra Premium. As some of you know I had to change the radiator cooling fans in my G35. However with modification I was able to use this part on a '95 Range Rover to end the Heater Core Gurgling. This tends to happen most when the engine is very hot, and is very common after shutting a hot engine down. Ethylene glycol coolants smell like sweet fruit juice. The excessive air in the system will mix with the coolant and create the gurgling noise. Next was a heater core replacement, had to pull the dash for that one, good fun. Also some grimy liquid all around the bottom edge of the revealed end of the heater core. As I increased the RPM's, the sound was more prominent. There's no leaks and the oils good. Ever since a friend and I changed the timing belt and water pump on the car, I think there has been air trapped in the heater core. Welcome to one of the many moronic things AMC did. Do you need a local plumber in Holroyd? We provide plumbing services in Merrylands, Mays Hill, Harris Park, Granville, Parramatta, Clyde, Merrylands West, Rosehill, South Wentworthville, Westmead. Delayed gas ignition is when gas in the furnace builds up rather than igniting immediately. I turned the heater on, the gurgling stopped, and then it started leaking. Turns out the heater core popped in the dash board. My guess is also the Heater core. hey, heater core OR thermostat, 1998 4 door sedan base model cavalier, 2. Liked it so well I ordered a heater core for my other vehicle as the original was also leaking. As far as the gurgling sound goes, it sounds like there is air in your cooling system. I brought it into the dealer who did a pressure check on the system and visual inspection for leaks but said all is good. I lose coolant in cold weather. You'll need to diagnose and fix the cause. Heater core is my first guess, but heat is fine and it seems to be coming from the driver's side - not the passenger's side where the heater core is located. My condolances if you do. A gurgling noise in the heater core may be caused by a low coolant level in the cooling system or a restricted a heater core. Having replaced the core this summer I was expected to be toasty all winter in my Crown, but now the following is happening: When I first start out in the morning, the heater works great, but when I hit the freeway, it grows colder and colder until I stop again, then it warms up. This guide is about Ford ranger heater not working. With this type of system, a gurgling noise can occur whenever the engine is running. Heater core again, or something else? 2001 Ford F150 I changed the heater core in August 2015 due to smelling coolant in the cab. It sounds like it might be in your coolant system. you can do this by filling the reservoir 3/4 full, start the car, and put the a/c blower on low with heat all the way up. Sounds like it is coming fom under the dashboard, but can’t be sure. Best HEATER CORE FLUSH, Works 100% of the time. (No Trucks) - Heater Core gurgling sound - 1994 Chevy P/U; 5. If this is the case you'll hear it in the cab. In addition, I have flushed the heater core, replaced the radiator and the sytem does not loose any coolant. I thought I had bled the coolant right but I guess not. When I start it, I hear a "gurgling" sound, like bubbling water. You should turn on the heater all the way to hot so coolant flows through the heater and recheck the cooling system level is full every morning for the next few days to get all the air out of the system. It is also possible you have a kink or pinched hose, might want to investigate. Motor doesn't overheat, but I can hear the gurgling in the dash and still have no heat. You can hear the water rushing through the pipes. Do you need a local plumber in the Hills District? We provide all plumbing services in Castle Hill and Baulkham Hills, Glenhaven, Cherrybrook, West Pennant Hills, North Rocks, Bella Vista, Kellyville, Winston Hills, Beecroft, Dural. I hear a gurgling sound behind my dashboard (sometimes) when I start my 00 Subaru Outback. It means there is air in your cooling system, and this is always a bad thing. Ensure that your vehicle is always functioning properly by replacing your Kia Spectra heater core, especially if you notice a sweet smell in your cabin or a puddle of liquid on your passenger side floor. I am assuming that the sloshing noise is some kind of air in the heater core which I would have burped to solve the problem but Im thinking now with the loss of heat that this has actually cause my heater core to fail. I hear a gurgle noise coming from my heater core it's seems not to leak but just hear a gurgle noise does Installing a - Answered by a verified Chevy Mechanic. It's common to hear gurgling under the dash if there's air in the system -- coming from the heater core. It circulates coolant as long as the engine is running. When it is it’s directed away from the engine by. However, the factory recommends the top line go to the pump. Small radiator looking thing located inside your dash behind the glove compartment. 1) If it is from a change of coolant - it will go away - keep the overflow reservoir full until it stops. As far as the gurgling sound goes, it sounds like there is air in your cooling system. But on thursday I started to smell radiator fluid/water smell (like off water / cat piss smell) just faintly, but on Friday I started to get visible steam coming out of my vents with climate control on. T, Oct 29, 2017. I'm guessing it is air trapped in the coolant in the heater core. I believe the problem is a leaking heater core or heater control valve, as It is not uncommon for either of them to fail. you need to get that air out of there. Heater core replacement and dash removal on 1994-1997 Dodge Ram pickups that don't. Air in the Heater Core: While the engine is running coolant is being pushed through the heater core. Technician B says this noise can be caused by a blown head gasket. Sounds like it towards the passenger side and I'm thinking it could be this air mix motor. The Chevy Cruze coolant leak is a problem on the rise. Heater core is clean. The 2012 Ford Fusion has 1 problems reported for gurgling noise under dash. So if air were to get itself stuck there then it would be quite the fight to get it open since air will work to the highest point in the system. Almost any leak in your car is an external leak, meaning the leaking fluid will just leak out onto the ground. Cooling system still wouldn't hold pressure after the. A high quality water heater is more energy efficient and friendlier to the environment. From my past experience with my 99 F-150 with the 4. Many people use a water heater instead of a boiler for radiant floor heat because it COSTS LESS. Lift the hood and check the temperature around where the heater core hoses enter the heater core box. If you have tried several times but still not be able to unclog the heater core, reading all useful information in this article will help you. Our 2014 started doing the same thing: blowing warm air and hissing sound coming from the dash. At high revs, like 3500 rpm, the heater core was getting hot but as the revs were dropping to idle, it was getting cold in few seconds. Technician A says an air pocket in the heater core makes this sound. You may also find that your heater core is making gurgling noises or hissing sounds from behind the dashboard. What I did was put it on ramps so the rad is higher than the heater core. I usually only hear it when its warming up. Re: '92 Heater "Gurgling" 02-20-06 04:15 PM - Post# 872416 In response to ffvetteman Well as luck has it, the heater core sprung a leak today. The gurgling is due to a small collection of gases in a cooler place (the heater core), we call that voiding in our coooling systems at my power plant. Note: Once you have the center section back in, hook up the heater lines and check for leaks before installing the next 40 pieces So time to put it back together First, the center section with the heater core, remember to lube all the moving parts before they go back in. A good drive or two should purge it out. 4 from an auction for $500. If air makes it into the heater core, you'll hear a bubbling or gurgling sound from the passenger side, behind the glovebox. Technician A says this is air trapped in the heater core. Can you hear a gurgling noise coming from the heater core? This usually means that there is air trapped in the coolant that circulates through the core. Just wandering if anyone has experienced a gurgling noise in the cab from the heater core at start up. Silverado & Fullsize Pick-ups - Gurgling or boiling sound under dash? - I recently made a 2000+ mile trip in my Silverado and at the end of the trip I noticed that upon acceleration from a stop their is a 'gurgling' sound or the sound boiling water makes coming from the passenger side under the dash. When water is heated, naturally occurring minerals separate and settle at the bottom of a water heater. dont be scared to give it a lil gas to while your bleeding, nothing over 2 and a half grand is necesary. Shortly thereafter, gauge starts to spike just shy of red zone. The gurgling is caused by low coolant level, but if your truck is anything like my 2000 Silverado, it is a sign of a slowly leaking water pump. Equinox - Gurgling Sound in Dash - I have a 2006 Equinox with 64,000 miles. This will cause air pockets to get inside of the heater core, thermostat, and radiator hoses. T, Oct 29, 2017. If done with the setting on "cold", most of the time there will be a large air bubble in the heater core. , Heater core replacement overview 1999 Mazda 626 Install Remove Replace , 2001 Audi A4 V6 Heater Core Flush , Replacing Cooling System Heater Core Hoses : How to Drain a Car's Coolant , How to remove Mazda 3. Check the heater core temperature. Owners of 2007-08 Honda Fit models may come into your store with a complaint of a gurgling-type noise from under the dashboard at idle, under light acceleration or during deceleration. The excessive air in the system will mix with the coolant and create the gurgling noise. All have potential issues with the right-side halfshaft. Silverado & Fullsize Pick-ups - Gurgling or boiling sound under dash? - I recently made a 2000+ mile trip in my Silverado and at the end of the trip I noticed that upon acceleration from a stop their is a 'gurgling' sound or the sound boiling water makes coming from the passenger side under the dash. 0 sees (maybe water pump design too) causes the system to build too much pressure and the heater core is the weak link. You're starting to see lots of customers complain about problems and symptoms stemming from a low coolant situation. I credited it to air trapped in my heater core. Our 07 does not have this sound at all and has HOT heat. I thought it had air in the system so I drew the cooling system down with vacuum and was able to get another half quart of coolant in it with a radkit plus vacuum coolant filling tool but it did not change anything. The bubbling sound went away but the rear heat intermittent issue is still there. Equinox - Gurgling Sound in Dash - I have a 2006 Equinox with 64,000 miles. Ever since, when the engine gets hot and is shut down and restarted several times (like when doing local errands), I get a gurgling noise (which I assume is air) from inside the center of the dashboard. Top up the coolant with a 50/50 mixture. We are experts in hot water systems repairs & replacements, blocked drains and all plumbing. Dealer wants to replace the heater core. Can you hear a gurgling noise coming from the heater core? This usually means that there is air trapped in the coolant that circulates through the core. ) bad water pump anyone had this problem? anyone safely flushed a water system or unclogged a heater core?. (and sounded like gurgling water in the dash) My windows were so fogged it was a complete white out. When you're fitting a replacement Subaru engine or Subaru radiator, it can be difficult to get the trapped air to bleed out of the cooling system. Where Is The Heater Core Located? The heater core is almost always located behind the dashboard and is typically buried behind nearly every other component in this area. So again, facing car, left side hoses get hot, but nothing on the right side after the heater core coming back to the front of the car. Ethylene glycol coolants smell like sweet fruit juice. One should have a green band on it which matches a green band on the pipe. If it’s not, flushing it may solve the problem. What I did was put it on ramps so the rad is higher than the heater core. Bleeding the core should eliminate the condition immediately. I remember hearing the waterfall gurgling noise a couple of times when I first drove it home. I don’t think it smells like antifreeze. Ever since, when the engine gets hot and is shut down and restarted several times (like when doing local errands), I get a gurgling noise (which I assume is air) from inside the center of the dashboard. SUBJECT: Gurgling Noise from Dashboard Area MODEL: E38 Complaint: Gurgling or percolating noise coming from the dash. Usually if you hear the gurgle, it's air up in the heater core. HEATER CORES – Calsonic Home HEATER CORES CONSTRUCTION • Integral water valves available Size • 25 and 35mm core depths and up to 200mm core width Testing • In-house laboratories to validate performance, corrosion and durability * Nocolok™ is a patented brazing process of Alcan …. What's causing this? I've been in the house 15 years and this is the first time ever. If your heater core is leaking, the coolant can pool at the bottom of the heater box and airflow will pick up the scent and send it through your vents. I'll take it to the shop who replaced the heater core last December and hopefully it'll be repaired under warrantee. strong>Dear Laney: The gurgling sound you're hearing is usually the coolant flowing through the heater core. At first, I would have thought the heater core was the culprit but I later noticed that it only happens when it's raining. If you can't find anything with the heater core or heating system, maybe find where your drain is and see if it's plugged. The gurgling effect from your hot water heater may start when you try to run a few appliances at the same time. 0L Turbo that should be the sound of the air in the coolant system @ the heater core (no air in system, no gurgling). See below for a visual illustration of a gas water heater shut down. I fixed it, the gurgling rattle is gone I disconected the return heater hose at the bottom end then cut in a radiator flush kit fitting near the heater core on the flow to side. Pour coolant into the other to fill the heater core and minimize any air pockets. Have a 2012 Ford Fusion, around 50,000 miles on it, makes gurgling noises. Some 2007-11 Civic/ Fit compact cars may emit a gurgling noise from under the dashboard at idle, under light acceleration or during deceleration. ) there is a clog in the heater core and needs to be flushed 3. I remember hearing the waterfall gurgling noise a couple of times when I first drove it home. There is T fitting by the firewall (just behind transmission dipstick), that connects the heater hose to the line to heater core. There is no visible leaking from the core, or condensation on the windows to suggest a leaky core. Air in the Heater Core: Your car’s heater core uses coolant to provide the heat for your cabin. Dealership says they can fix with some kind of kit for around 1,000 dollars, not covered under warranty. Over time, the sediment builds up, reducing the efficiency of the unit in heating and. I credited it to air trapped in my heater core. I have had a gurgling sound coming from the heater core in my 2001 AUG Passat. Is this a sign of the heater core, haven't done one in years and I know it's a pain to change, if. The cooling system may be low. 3) Over the past 3-4 days, noticed a gurgling sound under dash when accelerating, only when cold. this gurgling sound is the result of a restricted flow of coolant in either the engine or the heater core, usually the core. If this is the case you'll hear it in the cab. A bad blower motor could make a "wild, loud" noise sort of like the one you complain about. There should be a dedicated gas shut off valve on the gas line leading to the tank. Hope that makes the difference. (and sounded like gurgling water in the dash) My windows were so fogged it was a complete white out. This suggests air is in the system. If that doesnt work, try the thermostat, although, it doesnt really sound like thats your problem, since you still get warm air after you turn it off for a short period of time. I don't think it's a heater core problem- again, the sticking point to me is that the upper radiator hose was hot, the. The coolant in the reorvoir is constanly movingup and down. Air Pockets in the Heater Core. Sounds like it towards the passenger side and I'm thinking it could be this air mix motor. Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by KH. TOM: But it could also be a problem with the blower motor. To "flush" the core I turn the heater on and the gurgling goes awayuntil I start it again later. The more I read, I think I have it wrong. If there is a tiny leak, air is drawn in through the hole rather than coolant from the reservoir.