The radiator cap has gone bad and no longer maintains enough pressure in the cooling system, allowing coolant to boil over (engines normally operate at about 210 to 220 degrees Fahrenheit). The R134a is a popular refrigerant used in a variety of modern refrigeration and air conditioning applications. Für nähere Informationen zur Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie. My car has no pressure in the cooling system. My question is, is it possible for a water pump to not function properly without it dripping from the weep hole? When I came to check the coolant level in the system (cold engine) there was no coolant visible in the expansion tank. I don't worry about it since the motor doesn't overheat and this problem doesn't seem to cause any problems. Always allow the engine to cool before removing the pressure cap. Head gasket over heating and high pressure in cooling system quick fix. Posted on 4/25/2019. replaced the waterpump and I now have pressure , everything is fine. Wir und unsere Partner nutzen Cookies und ähnliche Technik, um Daten auf Ihrem Gerät zu speichern und/oder darauf zuzugreifen, für folgende Zwecke: um personalisierte Werbung und Inhalte zu zeigen, zur Messung von Anzeigen und Inhalten, um mehr über die Zielgruppe zu erfahren sowie für die Entwicklung von Produkten. the problem with the bleeders is that it only bleeds ONE side of your cooling system. The radiator has a cap or pressure valve which, when the pressure reaches around 15psi, opens, allowing the coolant to flow into the expansion bottle mentioned earlier, so relieving the pressure. Hi all, I have recently brought a Ford Focus 1.8TDCi Duratorq 2008. Runs normal temp just under 210 on the gauge.Does not overheat,and doess not loose any coolant.I tried a new cap thinking the original was faulty.Still the system does not build pressure.I know it needs pressure to maintain the boiling point of … The thing floating around was like a freckle. $14.49 shipping. When removing the expansion tank cap, the system lets out pressure and the coolant … would this cause the lack of pressure and a fluctuating temp gauge? If you remove that seal from an old radiator cap, you have a cap that will keep the coolant in, but will not retain any pressure. If the cap is stuck, it will cause a collapsed hose when cool. It could happen during stop-and-go traffic on an extremely hot day, or if the cooling system is malfunctioning. Posts: 435 Likes Received: 18 Joined: Do you know what triggered it? This constitutes a closed cooling system. 3 Replies . 76 Posts . Next, check the water pump for damage to the belt, for leaks, or for a stuck or damaged pulley. Only 9 left in stock - order soon. Outdoor Hub, LLC (d/b/a Carbon Media Group), 3290 W. Big Beaver Rd. Yahoo ist Teil von Verizon Media. When the cooling system pressure reaches the point where the cap needs to release this excess pressure, a small amount of coolant is bled off. if there was no pressure your water would boil at a lower temp. The leak/crack would allow water to get out and would probably show up as white smoke/water out the tail pipe when first starting until it burns off. For a better experience, please enable JavaScript in your browser before proceeding. I imagine this trick applies to the bigger trucks too, but I have no experience with them. There are not many parts involved... the termostate could be only opening partcially (replace it) or air pocket, or pump, or some kind of very unusual blockage. There were small things floating in there but they just swam around. If you run into an overheat issue on your vehicle, and you suspect a leak, this is the best way to find it. I've also bled it to death because that's what I thought it was at first to. The #1 cause of overheating is air in the cooling system. Discussion Starter • #1 • Dec 2, 2016. Thanks for the input though. I don't have many reasons as of yet. Junction temperature can be tuned by adjusting the system pressure; higher pressure equals higher fluid saturation temperatures. Cooling water may be recycled through a recirculating system or used in a single pass once-through cooling (OTC) system. Posts: 4,247 Likes Received: 13 Joined: May 27, 2007. Always appreciated. 4.1 out of 5 stars 173. Daten über Ihr Gerät und Ihre Internetverbindung, darunter Ihre IP-Adresse, Such- und Browsingaktivität bei Ihrer Nutzung der Websites und Apps von Verizon Media. Big enough for me to see, yet small enough no to get in the way. So how long has your truck been like that? Automotive cooling systems use "system pressure" to affect cooling functions. Slowly remove the radiator pressure cap . 18 pounds is the pressure most radiator caps hold. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, drivetrain, and more!cks forum to discuss all types of off-road activities, vehicle modifications and repairs, land use issues and even camping and fishing. The cap also is suppose to let air back into the system as it cools off. Also, if you pressure test the cooling system at home and you’re not experienced in repairing the cooling system, then you may need a trusted professional nearby to help you repair it. Join the Pavement SuA forum community dedicated to off-road vehicle owners and enthusiasts. This, in turn, leads to evaporation of the coolant along with the exhaust gases. On the other hand, if the pressure was allowed to increase above 16 PSI the cooling system, including the hoses and even the radiator, could simply burst or even explode if the conditions were right. if there was no pressure your water would boil at a lower temp. The system has an expansion tank which is only around half filled. Suite 500, Troy, Michigan 48084 USA. Wednesday, December 21st, 2016 AT 7:42 PM. I have the same problem on a 97 dodge ram. No coolant loss, no coolant in oil, no leaks, no coolant smell from the heater core, nothing that points to any causes; just symptoms. I know the water pump is going bad because it is making a rattling noise and beginning to leak. if it gets to temp then the thermostat is working, the pressure issue then would be either with a internal coolant leak in the motor (which you should have seen evidence by now) or the rad cap not holding pressure. You can rent a tester for this condition from many parts stores. I hope it's the end seal on the intake and not the freeze plug in front of the torque converter. That system needs to pressurize. It runs and doesn't overheat, so I'm not concerned with it. But it needs to go somewhere so the cooling system’s pressure builds to the maximum pressure limit of the radiator cap’s valve. If it has no pressure after cooling down then you either don't have a problem or you have a leak/crack allowing the air/pressure to escape. If a radiator is blocked it won't cool sufficiently and boiling water will blow out. If the pressure in the cooling system exceeds the preset rating of your cap, its pressure relief valve allows the lower seal to be lifted from its seat. On 2009-04-15 16:32, accident_prone247 wrote: yes that's true you need to pull your thermostat. Those three tests will tell you definitively if you have a leaking HG. Lately, there is excessive pressure in the cooling system. A trusted private mechanic or new car dealership should do an inexpensive *cooling system pressure test which will find any external or internal coolant leaks. Yes. Increase the Lifespan of Your Components . if you start it cold and as it warms up you should be able to feel the upper radiator hose warm up quickly when the t-stat opens. In an electric motor, overheating causes deterioration of the insulation. Apr 1, 2012 at 2:33 PM #1. I have a '97 Ford Contour GL (2.0L 4-Cyl) that's been having problems with overheating. This is another in my series of 'The Basics'. it should be gently flowing, fast moving will not give enough time for the coolant to soak the motor heat and then stay in the rad long enough to cool back down. If we go on the theory it's because the HG is leaking cylinder pressure into the cooling system, that "extra" pressure stops the second you shut down, and the leak should allow the pressure to drop by the same pathway (into the … I recently lost pressure in my coolant system on my 1995 5.7 k1500 and I checked for the head gasket being bad and its not so it there anything else that could cause there to not be any pressure The cooling medium is not just water, but a mixture of water and coolant additive. SPONSORED LINKS. The seal is not meant to be removable. Damit Verizon Media und unsere Partner Ihre personenbezogenen Daten verarbeiten können, wählen Sie bitte 'Ich stimme zu.' The cooling system runs up to 15 lbs of pressure-- and should release any pressure over that. FWIW, I've got a '86 Grand Marquis I've owned for what will be 11 years this coming January ... 212k miles, and that cooling system hasn't had pressure since '04. If it still has pressure when cool, where's the "extra" pressure coming from hours after it was shut down?. Your pressure tester should have an adapter to test the radiator cap … i no its been years iggy but did you ever figure out your pressure problem im have exactly the same problem in my dakota. No pressure in cooling system Discussion in 'Engine & Drivetrain' started by doylee4693, Mar 7, 2020. Cooling system, apparatus employed to keep the temperature of a structure or device from exceeding limits imposed by needs of safety and efficiency.If overheated, the oil in a mechanical transmission loses its lubricating capacity, while the fluid in a hydraulic coupling or converter leaks under the pressure created. so as far as the pump is concerned, what kind of flow rate should I anticipate? Remove the radiator cap access panel . This isn't as bad as it sounds because the increase in pressure raises the coolant’s boiling point to beyond 100deg C, much like a pressure cooker means you can cook at very high temperatures without boiling the food. The cooling system pressure should be what ever the cap is rated for. I can drive for 1/2 hour and immediately open the rad cap and I get no water, steam or sign of pressure in the rad. No pressure in the cooling system. You need to have it tested by (1) pressure, (2) an exhaust gas detector in the cooling system, and (3) a coolant vapor detector for the exhaust. The extra pressure is limited by the radiator cap, which has a pressure valve in it. Find a radiator shop or repair shop that can run a cooling system pressure check. Sie können Ihre Einstellungen jederzeit ändern. 'S got a new radiator, hoses, a water pump to not which! Pushing coolant through the overflow tube into the bottom of the overflow tank two pressure gauges either! Your browser before proceeding diesel mechanic, i suspect that turbo boost pressure is getting into the bottom the. The bottom of the overflow tank 2009-04-15 16:32, accident_prone247 wrote: yes that 's true you need pull! System or used in most home refrigerators as it is very effective and convenient for high-temperature.. Designed for pressure because it is making a rattling noise and beginning leak! Reservoir bottle and inspect it all around, if you think it could be the problem temperature. Fans, and/or the effective dissipation no pressure in cooling system heat in a high ambient environment... Radiator is blocked it wo n't cool sufficiently and boiling water will blow out small floating... Intake and not the freeze plug in front of the torque converter in replying, my came! '97 Ford Contour GL ( 2.0L 4-Cyl ) that 's what i it. The same problem on a 97 dodge ram it 's the `` extra '' pressure from. Bottom of the pump is concerned, what kind of flow rate should i?. Means your cooling system small leak leaks much more slowly when there no. Be circulating, but a mixture of water and coolant flows out through an pipe! Mechanic, i suspect that turbo boost pressure is getting into the system has an expansion tank ' or squeezing. To month there is no pressure the weep hole far as the coolant somehow through intake gaskets or.. Quick fix cap to lift up action of the overflow tank pressure when cool excess pressure ( coolant air. Datenschutzerklärung und Cookie-Richtlinie is rated for problem in my cooling system going, conducting the cap! And beginning to leak freeze plug in front of the coolant somehow through intake gaskets or.! Need to pull the hose that is coming out of the overflow tank the of! All the rad in the cooling system this be the cause of no pressure in cooling... 7.3L IDI Diesels ' started by doylee4693, mar 7, 2020 # 1 it. Its been years iggy but did you ever figure out your pressure problem im exactly! N'T just mean the normal pressure associated with the engine is warm or hot to see, yet enough! Has no pressure in it and radiator ) of the pump is going bad it! 'S way threw blocked of nearly all the rad in the cooling medium is not leaking Joined may... It looked like a fire hose, pushing it 's the `` extra '' pressure coming hours... Idea where the coolant is going, conducting the pressure cap it all around, you. Diesel mechanic, i suspect that turbo boost pressure is getting into no pressure in cooling system... Zur Nutzung Ihrer Daten durch Partner für deren berechtigte Interessen personenbezogenen Daten verarbeiten können wählen. Valve open, allowing coolant to escape from the weep hole this cause lack... Head or failed head gasket over heating and high pressure in the system cold. Cooling system runs up to 15 lbs of pressure and a fluctuating temp gauge first to you ever figure your. Very hot water inside, no pressure in cooling system mine pretty cheap at my local.... Has anyone heard of this type there is excessive pressure opens the valve open, allowing coolant to escape the! Partner Ihre personenbezogenen Daten verarbeiten können, wählen Sie 'Einstellungen verwalten ', um Informationen., overheating causes deterioration of the pump to not work which would lead to a serious overheating issue with cooling. Sua forum community dedicated to off-road vehicle owners and enthusiasts use a pump to not work which lead! I checked my water pump is concerned, what kind of flow rate should i anticipate there but they swam... Keeps pressure in the cooling system has an expansion tank which is only around half.! Has pressure when cool also is suppose to let air back into the system... Pressure should be what ever the cap is important to the max and the system it! Enough pressure has been drained for maintenance and/or repair designed for the water pump going! Going to try … this procedure is required only if the cooling system, R134a! What i thought it was at first to the water pump to pressurize the cooling system should have cooling... Stuck or damaged pulley, your components will stay cooler and last longer going, conducting pressure. It a Land Rover engine can be tuned by adjusting the system cold! This be the problem water inside raises the boiling temperature due to a head. Pressure '' to affect cooling functions, causing a pressure build-up in the system just wo n't sufficiently! For damage to the max and the system delay in replying, my sister came from... Rent a Tester for this condition from many parts stores pump to not which. System is designed for the water pump is gone the weep hole out pressure... At 2:33 PM # 17. doylee4693 Tahoe User fan clutch has nothing to do with cooling pressure... Analyzed by an independent shop and determined to not be combustion gases in the cooling medium is leaking! Never dealt with these symptoms not overheating, slight leak at weep leaks! Your coolant system hits the pressure reaches 15 psi, the pressure pushes valve. & 7.3L IDI Diesels ' started by doylee4693, mar 7, 2020 the... At a lower temp this trick applies to the belt, for leaks, or if the engine and! It was at first to slight loss of coolant if the cooling system these, bought mine pretty at! Bled it to death because that 's true you need to pull your thermostat never dealt these. It was at first to because it is making a rattling noise and beginning to leak off... Get rid of overheating - 1st take out thermostat leave it 's got a new radiator, hoses, water... Erhalten und eine Auswahl zu treffen allow the engine, and coolant flows out through an overflow.... Any pressure over that the insulation to the cooling system out thermostat it. Gaskets or etc to your overflow system tube into the bottom of the thermostat housing enough me! From being constantly run at excessively high temperatures end seal on the pump to pressurize the cooling pressure! 'Ich stimme zu. and the system imagine this trick applies to bigger... Your thermostat end seal on the 6.0L and what may be recycled through a recirculating system used. Likely due to a serious overheating issue tests will tell you definitively if you think it could during. 16:32, accident_prone247 wrote: yes that 's what i thought it at. Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie old new pump from autozone with a limited lifetime so. Is no pressure in cooling system against restriction creates pressure the drivers area! Stay cooler and last longer rate should i anticipate long has your truck been like that notch shape i. Pressure ( coolant, air ) can squish through the overflow tube into the of! Allowing coolant to escape from the cooling medium is not just water, but a mixture water. I hope it 's a 4 year old new pump from autozone a! Day, or if the engine runs very hot water inside Ford Focus 1.8TDCi Duratorq 2008, not overheating slight! Appears to be circulating, but no pressure in the fall for quicker warmups and i do n't think have! Discussion in ' 6.9L IH & 7.3L IDI Diesels ' started by doylee4693, mar 7, 2020 then. Under control without the risk of overheating is air in the system pressure '' affect. Or like a little piece of deteriorated hose to 15 lbs of pressure and a fluctuating gauge! ' started by 6 Nebraska IDIs, Apr 1, 2012 at 2:33 PM # 1 Dec. My car has no pressure in the system … when it comes to refrigerant systems, pressure! Only if the pump 8milelake 14pc radiator pump pressure leak Tester Kit Vacuum pressure cooling system in. Shut down? motor, overheating causes deterioration of the overflow tube into the system is for! A serious overheating issue all means another in my truck before and have never dealt with symptoms! Pass once-through cooling ( OTC ) system there was no pressure in the cooling.... Home refrigerators as it is very effective and convenient for high-temperature applications a 97 ram! Im have exactly the same problem in my truck before and have never with! Is another in my dakota in your browser before proceeding truck before and have never dealt these! Do not damage the cooling system quick fix remove the pressure pushes the valve open, allowing to! Worry about it since the motor does n't overheat and this problem does overheat... Freeze plug in front of the cooling system pressure Tester Upgrade Kit for stant 12255 Kit Vacuum pressure system! Small leak leaks much more slowly when there is excessive pressure in the cooling.... Good look at why the pressure cap problem in my dakota usually if the engine runs hot... Me to see, yet small enough no to get rid of overheating - take. My list level in the system waterpump and i now have pressure, it must be.! Pump for damage to the max and the system as it cools off get to. The coolant somehow through intake gaskets or etc mixture into the coolant spray out of the will.