Gurgling From Heater Core

Getting the air out can sometimes be tricky. The gurgling is the coolant going thru the heater core Click to expand Well technically the sound is not the coolant passing through the heater core but the air passing through the heater core. The heater core is the high-point in the coolant system, so any air that gets in accumulates there. (I usually get two) and where the hoses go to the heater core in the engine compartment, hook the flush kit up. Over time, the sediment builds up, reducing the efficiency of the unit in heating and. 0 sees (maybe water pump design too) causes the system to build too much pressure and the heater core is the weak link. more than likely the heater core. Comments: Can you guys please walk me through bypassing my heater core on a 1999 e-300 mercedes? from under the hood if possible. It’s the source for the heat in the passenger compartment of your vehicle. Your coolant level is too low. It draws the cold air off the floor and blows it through the heater core up into the room which mixes and breaks up cold spots. If that's the case, search these boards, there are many posts describing the trials and tribulations (and some really helpful tips) regarding the notorious 'leaking heater core' ;^) Satakieli Dodge Dakota JOIN HERE 5/27/2005 10:00:44: RE. Our 07 does not have this sound at all and has HOT heat. She also said she can hear water flowing and/or gurgling from the dash. 1) If it is from a change of coolant - it will go away - keep the overflow reservoir full until it stops. Thanks again. We have replaced thermostat, radiator cap, blew out the heater core, attempted to get any air in the system, out. Possible long term issues that can occur is overheating on a hot summer day. is it cold, or as it warms, often heard is the coolant system: needing to be "burped", if you have no signs of overheating, or low coolant not to worry. Today's EATC systems use blend doors to blend ambient, heated, and cooled air to achieve the desired temperature. When water is heated, naturally occurring minerals separate and settle at the bottom of a water heater. The heater core is often the highest part in the cooling system and air collects in there, you may hear coolant/air bubbles passing through the heater core at higher engine speeds. I had a new timing belt and water pump put in last summer, and since then I have heard the same noise one other time. This tends to happen most when the engine is very hot, and is very common after shutting a hot engine down. Small radiator looking thing located inside your dash behind the glove compartment. Giving the core a good burp should alleviate the condition immediately. 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. Over time, the sediment builds up, reducing the efficiency of the unit in heating and. However, the factory recommends the top line go to the pump. My gurgling noise only happens with vehicle running and A/C on cool. Air in the Heater Core: While the engine is running coolant is being pushed through the heater core. Possible long term issues that can occur is overheating on a hot summer day. Ended the Heater Core Gurgling. If you ever notice a gurgling sound from under the dashboard of your car every time you run? It could be a sign of blocked air bubble in the heater core of your cooling system. Top up the coolant with a 50/50 mixture. 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. See below for a visual illustration of a gas water heater shut down. The heater coil, or heater core, on your car, is like a small radiator. Best Answer: You're low on coolant and you are hearing the air pocket in the system as it goes through the heater core. 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. ) there is a clog in the heater core and needs to be flushed 3. The Nova is bypassing the heater core. I've returned the core and got my money back after the core was checked with the manufacturer. Some claim it is easy to remove the heater core unit without removing the dash by removing the AC evaporator and the blower motor. It’s the source for the heat in the passenger compartment of your vehicle. Loose water sucks on so many levels. flushed out the heater core and nothing came out besides coolant. The water gurgling sound is most likely that the heater core and engine cooling system still has a lot of air moving through the cooling system. 2007 town car. The pump is not leaking or making noise. Car heater problems are also frequently associated with heater core difficulties: coolant may not be traveling through the heater core properly, the air from the blower motor is not reaching it or there’s a clog in the small tubing of the heater core. 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. The answer is no, the heater core flows either way. This can happen for a number of reasons, including a blown head gasket or a leak developing in the heater control valve. Cooling system still wouldn't hold pressure after the. Usually if you hear the gurgle, it's air up in the heater core. I was searching on google and found a discussion on this which said "There is a weep hole on the heater core hoses (usually the passenger side hose). This gurgling phenomenon surfaced only after I put my coolant hose restrictor in. 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. It's either an air bubble in the heater core (low coolant) or the condensate drain for the HVAC stack is plugged (not uncommon). Clicking noises – These noises may be caused by a failing or defective thermostat. (I usually get two) and where the hoses go to the heater core in the engine compartment, hook the flush kit up. will keep that in mind PBURNETT, but if you hear the gurgling from behind the dash area, it is most likely air trapped in your heater core unless you suffer from a bad WP as OP stated. Thanks everyone. If you ever notice a gurgling sound from under the dashboard of your car every time you run? It could be a sign of blocked air bubble in the heater core of your cooling system. I get a gurgling sound in behind the dash just for a few seconds when I start my car. Just a follow up. Start by checking the fluid level in the reservoir, filling it to the "full" line when the engine is cold. Air in the Heater Core: Your car's heater core uses coolant to provide the heat for your cabin. Have a 2012 Ford Fusion, around 50,000 miles on it, makes gurgling noises. A gurgling sound from your water heater may only last only 3-4 seconds, but be aware that if other appliances set off the gurgling affect from your hot water tank, you may have bigger problems. It seems with the warmer weather now, once the engine is hot, it gurgles more frequently (Almost ever acceleration from stop). That is a simple fact of life that as water is heated it tends to expand and gasses release from the fluid. I have air trapped in my heater core. We get all kinds of calls about weird water heater noises, ranging from water heaters whistling, to water heaters sounding like they’re full of rocks, and yes, we even get calls about water heaters sounding like hissing snakes. Only thing I can think of is air in the heater core. heater core maybe? Or maybe a sticking thermostat. A high quality water heater is more energy efficient and friendlier to the environment. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. It can be useful to know how engine coolant flows through the system for heater core troubleshooting. however my wife's VW was leaking water in the floor board and your could hear it when you go around corners. Easy to use parts catalog. Heat Not Hot, Upper Radiator Hose Hot, WTF. My wife's old HHR not to long after she bought it had what sounded like running or gurgling water right behind the dash, dealer tracked it down to a clogged A/C drain. Have a 2012 Ford Fusion, around 50,000 miles on it, makes gurgling noises. Have pressure tested the system, all ok. With this type of system, a gurgling noise can occur whenever the engine is running. Guess that's why it was gurgling. To get it out normally takes several heat up and cool down cycles. We get all kinds of calls about weird water heater noises, ranging from water heaters whistling, to water heaters sounding like they’re full of rocks, and yes, we even get calls about water heaters sounding like hissing snakes. is the gurgling (maybe more like a siphoning sound) a sign of a bad heater core (heard the same sound in my supra the night. The heater core is often the highest part in the cooling system and air collects in there, you may hear coolant/air bubbles passing through the heater core at higher engine speeds. 2003 Ford Ranger Heater Core Replacement Complete , Heater core shortcut , How to change the heater core in a 1990-1996 C4 Corvette. Mine does it every once in a while. Revision D – 02/07/2009. The gurgling is the coolant going thru the heater core Click to expand Well technically the sound is not the coolant passing through the heater core but the air passing through the heater core. Cooling System Troubleshooting. One likely cause of the annoyance, reports Honda, is an air-bound heater core. The upper hose gets warm, but the lower hose after the T-stat is cold. 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 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. Generally a gurgling sound from your dashboard area is caused by bubbles or air getting in to your coolant which can be heard from your heater core. Not the head gasket. I was able to make it go away when I adjust the passenger side to full heat. this gurgling sound is the result of a restricted flow of coolant in either the engine or the heater core, usually the core. It means there is air in your cooling system, and this is always a bad thing. Later during the weekend the temp skyrocketed and I could hear the coolant "gurgling" from what I assume is air in the system. Low coolant level A low coolant level will allow too much air in the cooling system. it was the AC drain on the firewall that was blocked by mud and leaves for the last 15 years lol. Air in the heater core is the usual cause of heater core gurgle. 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. The air rises to the top of the cooling system, and this produces an air fluid level inside the heater core. If you smell antifreeze inside the car or if it's squirting out from under the dashboard and burning passengers, you have a leak at the heater core. The cooling system may be low. At first, I would have thought the heater core was the culprit but I later noticed that it only happens when it's raining. Best HEATER CORE FLUSH, Works 100% of the time. It seems with the warmer weather now, once the engine is hot, it gurgles more frequently (Almost ever acceleration from stop). Have pressure tested the system, all ok. gurgling noise in dash board Factory 2. Water gurgling sound in dash. Car Battery Terminal Voltage Chart. It's either an air bubble in the heater core (low coolant) or the condensate drain for the HVAC stack is plugged (not uncommon). It's common to hear gurgling under the dash if there's air in the system -- coming from the heater core. com: Car complaints, AC / heater problem. Last time I had a vehicle where I heard a gurgling noise like you are describing, it was a 1987 Pontiac Grand Am. my car is totaled now, but I often wondered if maybe it had a tiny head gasket leak. The heater core is the high-point in the coolant system, so any air that gets in accumulates there. You'll need to diagnose and fix the cause. With this type of system, a gurgling noise can occur whenever the engine is running. Just a note of caution here - yes the gurgling is air mixed with coolant flowing through the heater core. com! Free shipping over $300, fast delivery & everyday low pricing!. By 2016LTCC, October 25, I'm getting a gurgling water type noise from the lower passenger dash area. There's no leaks and the oils good. my car is totaled now, but I often wondered if maybe it had a tiny head gasket leak. Bleeding the core should eliminate the condition immediately. Sloshing water noise behind dash. You might have a wind shield leak. The Chevy Cruze coolant leak is a problem on the rise. The gurgling noise is caused by coolant flowing back into the heater core inside the dash when the engine is started and the water pump begins circulating coolant. Took the res cap off topped it up and ran it up to operating temp. 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. 7L Cummins Cylinder Head Heater Hose Adapter by Glacier Diesel part number 29-128. However with modification I was able to use this part on a '95 Range Rover to end the Heater Core Gurgling. hey, heater core OR thermostat, 1998 4 door sedan base model cavalier, 2. The more I read, I think I have it wrong. Most likely air trapped in the heater core. To bypass. I have air trapped in my heater core. 7 V8 engine. If you are looking for Car Battery Terminal Voltage Chart, you’ve come to the right place. I've returned the core and got my money back after the core was checked with the manufacturer. My buddy and I have been replacing the heater core on our 6. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. New heater core arrived quickly, well packaged, same as original. I have a loop hot water system (forced hot water). Hey, My 6 cyl VT Berlina has been making a water gurgling noise in the dash very occasionally when it's first started. i pulled the rubber plug and cleaned it out put it back and and solved that issue. However, you may need to replace the heater core if that doesn’t work. The truck never used to do it I'm thinking maybe that 48 pounds of boost is effecting my head gasket and sucking air somewhere. Inspect the heater core and attached hoses for leaks. It’s the source for the heat in the passenger compartment of your vehicle. The heater core on my 1998 Dodge Ram was gugrling air on startup, sounding like a percolating coffee maker when I would start the. 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. Hey, My 6 cyl VT Berlina has been making a water gurgling noise in the dash very occasionally when it's first started. On way home, gurgling again fron heater core and temp redlined. Air in the Heater Core: While the engine is running coolant is being pushed through the heater core. I have air trapped in my heater core. Have pressure tested the system, all ok. 4L DSL Turbo. The fact that you are losing coolant says that there is definitely a leak within your cooling system whether it be a bad head gasket, leaking heater core, leaking freeze plug(s), or a cracked block. My 2000 did the same thing. This can happen for a number of reasons, including a blown head gasket or a leak developing in the heater control valve. There is T fitting by the firewall (just behind transmission dipstick), that connects the heater hose to the line to heater core. If done with the setting on "cold", most of the time there will be a large air bubble in the heater core. 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. NOT cool while driving. Still gurgles, but seems less pronounced now. 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. 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. Reverse flushed the heater core plus coolant flush. flushed out the heater core and nothing came out besides coolant. With my supra everytime i get the gurgling heater core its always been a sign of a blown head gasket, I doubt thats your issue though. Check the carpet and under the dash for wetness to discover the source of the leak. Giving the core a good burp should alleviate the condition immediately. You will hear a water type gurgling sound and this indicates that you have unloced your. ) a blockage in the heater BOX (not core) like foam or something blocking the hot air to driver side 4. Some Dexcool and brown water came out, then ran clear. The core and new carpet will be replaced under warranty. I know the sound is air pockets in the coolant flowing through the heater core. RAM 1500 GURGLING HEATER CORE FIX NO REPLACEMENT INSTALL TRUCK. Come to think of it, my Taurus did the same sort of noise before the heater core went on that too. Tried up on ramps, running the motor till the fans come on and thermostat opens, spill free funnel used. It is the heater core temp sensor, it tells the HEVAC system when the coolant is up to tmperature and to allow the heater to fully utilise the hot air should it be required to maintain comfort levels. When air bubbles get trapped they can make a gurgling sound in which case the front or the rear or the front of the car must be jacked up to pure the bubbles from the core. 2nd Gen Ram Tech - Heater Core Gurgle - I did a search, but I think I have a different scenario. hey, heater core OR thermostat, 1998 4 door sedan base model cavalier, 2. is the gurgling (maybe more like a siphoning sound) a sign of a bad heater core (heard the same sound in my supra the night. When your radiator cap does not seal properly, air will get inside of the cooling system. 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. , 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. Dealership says they can fix with some kind of kit for around 1,000 dollars, not covered under warranty. The heater core in my 2017 ZR2 with 9k miles failed. this gurgling sound is the result of a restricted flow of coolant in either the engine or the heater core, usually the core. 7 V8 engine. I have air trapped in my heater core. 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. When you start first thing in the morning, you hear gurgling as the air is displaced upward by water flow. You are hearing the increased flow of coolant to the heater core as you come off idle, as your auxiliary pump is non-functional. When air bubbles get trapped they can make a gurgling sound in which case the front or the rear or the front of the car must be jacked up to pure the bubbles from the core. In addition to cooling your home, an air conditioner removes moisture from the air to lower the humidity level inside your house. It can also cause a moaning noise from the heater core. 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. The air rises to the top of the cooling system, and this produces an air fluid level inside the heater core. more than likely the heater core. We are experts in hot water systems repairs & replacements, blocked drains and all plumbing. Many people use a water heater instead of a boiler for radiant floor heat because it COSTS LESS. The principle of fan-powered heaters is the same as the baseboard heater (hot water, pipe,aluminum fins). Mustang Monthly states the heater core was damaged from excessive flow, causing them to swell until they leak. Sounds like air in heater core or overflow tank. That could be just due to the thermostat repair. There is T fitting by the firewall (just behind transmission dipstick), that connects the heater hose to the line to heater core. (and sounded like gurgling water in the dash) My windows were so fogged it was a complete white out. I would hear the gurgling in the heater core, but also occasionally I would hear (and see if I was quick enough after turning engine off) bubbles in the overflow it did ever so slowly use/lose coolant too. Thank You! January 6, 2015 : Followup from the Pelican Staff: We don't have a procedure for that. first i would do a coolant flush and attach a garden hose to the heater core (backwards) to flush it out. I have a 2001 Civic LX with 82000 miles and I'm hearing a "gurgling" sound coming from behind the dash. If there is a tiny leak, air is drawn in through the hole rather than coolant from the reservoir. some gunk may flush out, then re install it and fill it up. It's your heater core. When it is it’s directed away from the engine by. Next, set your automatic heater/air-conditioning system to manual, manually advance the heater control valve ALL the way to the hottest setting, and then drive the car for a few miles - there might still be air in the heater core that requires purging. Cooling System Troubleshooting. One likely cause for the noise, reports American Honda Motor Co. hey, heater core OR thermostat, 1998 4 door sedan base model cavalier, 2. Check the carpet and under the dash for wetness to discover the source of the leak. is it cold, or as it warms, often heard is the coolant system: needing to be "burped", if you have no signs of overheating, or low coolant not to worry. The cooling system may be low. I have a loop hot water system (forced hot water). Dealership says they can fix with some kind of kit for around 1,000 dollars, not covered under warranty. For a few months there has been a strange 'sucking/ gurgling' noise behind the dash. Low coolant level A low coolant level will allow too much air in the cooling system. Heater Core Gurgling Noise. In most vehicles, we can get to it by going under the hood, but sometimes it’s necessary to take the dashboard apart. My buddy and I have been replacing the heater core on our 6. If the heater core were leaking it seems it would fog the WINDSHIELD bigtime, but it's not. Blown head gasket? 75 Answers. it was the AC drain on the firewall that was blocked by mud and leaves for the last 15 years lol. I havent seen one yet that was over heating but anything can happen. 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. flushed out the heater core and nothing came out besides coolant. I make videos in english, german and spanish and many of my home made videos are applicable to ma More About geRAMicc85 » Here i am showing you how i solved the heating problem on. Dealership says they can fix with some kind of kit for around 1,000 dollars, not covered under warranty. Welcome to one of the many moronic things AMC did. It's been regularly maintained and has never overheated. With luck, you could get a glass full at most, usually from inside the heater core. I installed the manifold upgrade about one and a half years ago and also installed all new hoses, thermostat, and a flushing tee at the same time. Turned on heat and at first it wasn't hot but then I heard a loud gurgling sound from behind the dash, assume heater core. 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 have been told to try and replace the water pump. Took it into the dealership and was told we needed to replace the evaporator core. At theatre now so figured I could make it home and diagnose in am. If this does not solve the issue, then there is a restriction in the heater core. If you have a sloshing in the dash board, it is 1 of 3 things. 2003 Ford Ranger Heater Core Replacement Complete , Heater core shortcut , How to change the heater core in a 1990-1996 C4 Corvette. Here's how to fix that. I will not do a a heater core job w/o installing the restrictor on a 5. Turned on heat and at first it wasn't hot but then I heard a loud gurgling sound from behind the dash, assume heater core. 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. 2nd Gen Ram Tech - Heater Core Gurgle - I did a search, but I think I have a different scenario. I hear a gurgling sound behind my dashboard (sometimes) when I start my 00 Subaru Outback. I am thinking that if the flow of water is directly in from the engine (heat source) and out, your core could have been plugged, have a look to see how much calcification (the white crud) is built up in it. Yes, they are supposed to be the same size on the heater core. 5 year old car should have this problem already. T, Oct 29, 2017. 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. After the truck runs for a while, and I turn the heat on there is no noise and stays at a constant temp. The gurgling tcndeb is having - Are you running the defroster or AC? The AC system will gurgle and that may be what you are hearing. If the answer to these is 'yes' then you probably have a leaking heater core. A bit of bleach can prevent clogs in the AC drain line. my experience is, it is impossible to remove the heater control unit without removing the dash. Later during the weekend the temp skyrocketed and I could hear the coolant "gurgling" from what I assume is air in the system. Later that year during winter, I had no heat! then Sidak did one of those purges at the heater core. Stops when warm: found coolant to be low, but not drastically low. Automotive Recalls and Technical Service Bulletins for 2008 Ford Truck F 250 4WD Super Duty V8-6. The pump is not leaking or making noise. at (410) 268-7191. 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. (for whatever reason, mice LOVE making nests in the housings). On way home, gurgling again fron heater core and temp redlined. The excessive air in the system will mix with the coolant and create the gurgling noise. Air pockets and low coolant levels are the most common problems. That could be just due to the thermostat repair. 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. Thanks everyone. However, the factory recommends the top line go to the pump. A gurgling sound from your water heater may only last only 3-4 seconds, but be aware that if other appliances set off the gurgling affect from your hot water tank, you may have bigger problems. The restrictor reduces the pressure on the heater core casuing it to last a lot longer. According to the Popular Mechanics website, a common cause of a car's heater not working is a buildup in the heater core. If there is air still in the system, the fluid in the reservoir will be empty. Mine would gurgle on start-up, and at mid to high revs. NOT cool while driving. ) bad water pump anyone had this problem? anyone safely flushed a water system or unclogged a heater core?. It only started when it was gurgling and I was trying to get it to stop. Yet I hear a gurgling sound from under the dash near the glove box. The gurgling is coming from the heater valve cycling, and can be normal in some cars at some ambient air temperatures. New heater core arrived quickly, well packaged, same as original. At theatre now so figured I could make it home and diagnose in am. The answer is no, the heater core flows either way. Sounds like air in heater core or overflow tank. TOM: But it could also be a problem with the blower motor. Now if it's a bad thing or not I don't know. Inline Plumbing and Electrical has been operating for over 25 years providing Sydney and outer regions with outstanding plumbing and electrical services. If you let this car idle a little while then accelerate there is a gurgling noise from under the dash. $1080 later and we have cold air again. Generally a gurgling sound from your dashboard area is caused by bubbles or air getting in to your coolant which can be heard from your heater core. Open the radiator cap, the one on the radiator if it has one and remove the reservoir cap too. I was smelling antifreeze earlier after I had taken the truck for a drive. 07 prius hybrid,check engine light on after coolant flushe and gurgling sound in the heater core. (No Trucks) - Heater Core gurgling sound - 1994 Chevy P/U; 5. The Miata cooling system is described on pages E-2 through E-14 of the 1990 Miata Factory Workshop Manual, and much of the material below, including illustrations, is taken from that manual. Sometimes the heater will blow out hot air and work beautifully, other times. One likely cause of the annoyance, reports Honda, is an air-bound heater core. I had a new timing belt and water pump put in last summer, and since then I have heard the same noise one other time. TOM: But it could also be a problem with the blower motor. the heater core, and when you turn on the heat, you hear the coolant bubbling through the system. Doesn't matter what hose goes where. 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. Today the weather is nice and sunny, and my car is driving perfectly. Yet I hear a gurgling sound from under the dash near the glove box. Delayed gas ignition is when gas in the furnace builds up rather than igniting immediately. I found another problem with my "new" 1992 F-150 today. Then I placed the garden hose in the bottom end of the return hose and turned it on full blast for a good five miinutes. 2001 Ram 2500 5. One likely cause for the noise, reports American Honda Motor Co. The car is not overheating though the radiator fan occassionally comes on after I turn the car off. I didn't notice an excessive abount of crud coming out, and the flush flow seemed pretty good - not restricted. The tubes are cadmium plated inside and out to prevent premature failure. ) bad water pump anyone had this problem? anyone safely flushed a water system or unclogged a heater core?.