Renault trafic losing coolant but not overheating. html>rn Aug 6, 2023 · Hey guys, I have a problem with my Renault Trafic, diesel, model year 2019. Do this by allowing the engine to be fully warm, then while looking at these hoses, rev the engine up to around 2000-2500 RPM (or have someone do it for you while you observe the hoses). If your A/C is on, turn it off. However, most coolant loss situations are caused by leaking water pumps or radiators. Low Oil. 0, and it has been a great truck. If your van is low on coolant, it will not blow heated air. Look for the check engine light. So for years, my heaters havent been very good, and going down hill off-throttle the van would cool down, indicating a thermostat Sep 15, 2023 · 1. simon w Discussion starter. It did overheat for a while, but now that we know to keep adding coolant, it’s not overheating. As mentioned above, losing coolant means less coolant flowing in your cooling system. The years available stretch from 2001 through to 2024 and to view the coolant type and capacity you just click to expand. Let it sit for 15-20 minutes and idle, watching for activity. 0 dCi 90 Expand. May 28, 2024 · Hello. One of the primary reasons for engine overheating in Clio is a low level of coolant or antifreeze in the cooling system. 6 dCi 125 DPF Expand. 0 dCi 170 DPF Euro 6d-temp Expand. Jan 11, 2023 · In addition, a faulty radiator cap can cause coolant to leak out of the system, leading to low coolant levels and overheating. Start your engine. Thanks in advance. i assume you have an electric cooling fan- check to see if your fan motor is Nov 11, 2020 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Coolant pump seal leaking. 2013. Few drips every 10s or so. Otherwise it is signs of stains or coolant having dried off. Oct 31, 2022 · To answer this question, here are 10 common causes of a car blowing white smoke, even if it is not overheating: Blown head gasket. This not only allows NOx emissions to continue, it also causes overheating which can cause serious damage. Faulty water pump. Head gasket. 9dci 2002 F9Q engine. 6 dCi 95 DPF Expand. My garage: 1990 Renault Trafic T1100 Camper, 1992 Vauxhall Astra Mk3 Estate, 1991 Harley-Davidson XLH 1200, 1979 Triumph Bonneville T140E, 2006 Citroen C3. 3. Unscrew and remove the pressure cap from the cooling system and keep it aside. Another cause of losing coolant without any visible signs is an external coolant leak. Oct 3, 2014 · Also, maybe a bad radiator cap, or crack in top of tank, and you're losing fluid as steam, hence no puddle, but smell. Yes, sorry, forgot to mention that there was a coolant leak from bottom right corner of radiator. When I drive the van everything is fine, temperature gauge is half way as normal but every couple seconds the STOP light and the red engine management light comes on flashes off and repeats. Sort by Oldest first. Trafic III 1. Jan 4, 2021 · Have you opened the bonnet when the engine is hot. I cut off about an inch and hooked it back on. Feb 21, 2021 · For a start, check the oil level, make sure coolant hasn't got in. External issues with radiators are generally the result of too much dirt or similar not allowing airflow around the radiator. When replacing the hose, the condenser should also be replaced. Failure of the water pump can lead to inadequate coolant circulation, causing the engine to overheat despite having a full coolant reservoir. These can be external or internal faults causing blockages. When the engine is warm, visually watch the coolant in the cooling system to see if it is circulating. Low coolant level. 1. Refill both, same deal. Mar 21, 2024 · Reasons Your Car Is Overheating When Idling. Jun 16, 2022 · 1. 28 posts · Joined 2009. If the engine overheats while idling, it could be a bad radiator fan, a malfunctioning relay or fuse, a bad thermostat, or a clogged radiator. The coolant pump has a seal which prevents coolant from leaking past the bearing. #4 ·Nov 12, 2018. Fill until the water level reaches the standard level (do not add coolant directly without mixing with distilled water into the engine coolant tank). The coolant is responsible for absorbing heat from the engine and For the 2018 model year of Renault Trafic we have found that all trims use the same coolant: Trafic III 1. 9 DCi trafic - water coolant temperature fault. An internal coolant leak will create Sep 15, 2023 · Low coolant level. I had a similar problem about the coolant a couple of years ago and it was that small hose leaking a little. Not had the chance to drain and refill system since radweld was put in a few days ago. P. #3 · Mar 24, 2013. When you are adding coolant to the cooling system, the radiator may fill up to 100%. What you are looking for is to see if one of them collapses. For the 2013 model year of Renault Trafic we have found that all trims use the same coolant: Trafic II 2. it seats in just like that. Flickering. Coolant also works in the opposite direction, by preventing damage from the water being too hot if the engine is overheating. Engine overheating. The most effortless to pinpoint what the issue is would be on the off chance that it is an outer break. 40. Hope you can figure this out! Good luck! The water pump is located where the #7 is pointing (passengers side). You release pressure and NOW the water at the hot places turns to steam and pushes out the coolant above it. However, this is only a temporary fix and will not address the root cause of the leakage. Feb 24, 2017 · So I think it’s safe to say that there are many possible causes of the temperature gauge ticking over to the red. The hose can break due to vibrations caused by Jan 25, 2024 · 3. Jan 10, 2017 · Probably an airlock blowing coolant out of the pressure cap. The delta is getting high but with egr delete, hard to tell if you have plugged cooler without egr valve residue. Burnt oil. Apr 2, 2024 · It may not cause any direct damage to the exhaust system, but your lowered coolant level can eventually lead to your engine overheating. Regardless, the moment you notice any signs of coolant loss and no leaks are visible, you should check the reservoir before driving any further. It may be evident with traces of car Jan 9, 2023 · Final Verdict. Nov 28, 2016 · Personally, once you pull it out, just replace it to be safe. Check every hose for loose fittings or cracks. Dec 23, 2016 · Loss of coolant, and; Overheating, and also; No heat. From completely cold, turn the car heater to max, take off the expansion tank pressure cap, start the engine and run it until the thermostat opens and the radiator fan kicks in. 9. not running , then running . Im pretty sure i know what the issue is but id like to test it before i go any further. 0 dCi 130 DPF Euro 6d Expand. Leaking engine coolant. A combustion leak tester checks if coolant is leaking into the combustion chamber through a blown head gasket or cracked head. I had changed the thermostat first thinking it was that , i renewed the radiator , there was a small leak and some of the old radiator in the corner was badly corroded . Aug 17, 2021 · Aug 19, 2021. If this seal fails then coolant can seep out where the coolant pump pulley shaft enters the pump housing. If you can’t pull over and stop the car, turn on the heater, as it will draw in the warm air from the engine and 6 days ago · Step #1: Check Coolant Reservoir Levels. The loss is easy to identify. Level dropped because it is going into combustion chamber. If the system is not holding pressure, boiling point will be lowered. That's a lot of problems to have show up all at once, so it would be good if we could find a common element that would explain all of them. Dec 30, 2018 · Hello, I have a 2007 Renault Trafic van. For the 2021 model year of Renault Trafic we have found that all trims use the same coolant: Trafic III 2. Bubbles in the coolant is enough evidence for a conviction. Trafic III 2. Mar 8, 2018 · -A broken coolant cap (it will vent off steam when the engine is hot, sometimes hard to see) -Unproperly sealing hoses (coolant drips can be observed at the connection with radiator or engine) -Cracked hoses (hoses are hardened/brittle over time and get tiny cracks leaking the coolant. Your car can overheat but not show any visible leaks due to a variety of problems. Insufficient Coolant: One of the primary causes of engine overheating is a lack of coolant or antifreeze. Jan 21, 2015 · Check the small diameter hose that goes from the over flow bottle to the top of the radiator on the passenger side. The Renault Trafic first hit the markets all the way back in 1980 and it has been in production ever since. Each time, over the course of a week or two the coolant is always gone from the resevior, and the radiator is down maybe 1/4 of a gallon (maybe a little less) each time I check. Common repairs required to correct overheating are: • Waterpump replacement Jun 2, 2024 · Pull over and shut off the vehicle. 2021. #1 · Jul 29, 2014. Sep 13, 2023 · 1. Water Pump Malfunction. Jan 16, 2021 · 1. 9dci) has been losing coolant for some months now and topping it up was the simple remedy until now when it's likely to freeze overnight and without anti-freeze in the coolant (or so little it wouldn't be effective)l I need to sort out the cause of the coolant loss. The temperature gauge may be indicating a higher-than-normal temperature or an overheating condition. Pressurizing the coolant system to 20-25 PSI both cold and hot may help spot a small leak but there is no guarantee. I would check into your o2 sensors, MAS Air Flow Sensors, etc. If a BMW is leaking coolant, there are a few temporary fixes that can be applied to prevent further damage to the engine. In the event of an emergency where distilled water is not available, clean water can be May 3, 2008 · Hi, on my 2001 1. 0 overheating but no coolant loss. Today I think I've finally sussed out why the coolant Jul 5, 2008 · Renault Kangoo Combi (1999 - 2004) - 00 1. I replaced the water pump last winter because it was leaking, Had the turbo coolant hose leak and replaced this fall. it feels like your car was well worn when you got it. Coolant loss means that there must be a leak someplace. 0 dCi 120 DPF Euro 6d-temp Expand. SOURCE: Slow to rapid coolant rise after . 0 dCi 115 Expand. Any help would be much appreciated as i'm sick and tired of throwing money at this van now and i'm contemplating moving over to a more reliable van ie:Transit. Nov 4, 2022 · So, “my car is leaking water but is not overheating,” you say. This can (and should) be tested, as well as the entire system should be pressure tested. Make sure there's enough coolant in the system. Pressure test , look for leaks with car up in the air , do not forget to check if water/coolant comes out the exhaust . Jul 14, 2013 · In this hot weather I would expect the engine to reach normal temperature in about 15 mins at idle and for the radiator fan to kick in at some point around then. 5 Renault Trafic that has a very slow coolant leak with no sign of were it could be coming from, Any suggestions? Like. Have you had similar experiences and if so, how did you solve the problem and what did the garage say? Trafic. One of the primary reasons for engine overheating in Captur is a low level of coolant or antifreeze in the cooling system. Coolant temperature fluctuations whilst driving , warming up to half way position Sep 1, 2012 · Posted on Sep 01, 2012. 2. When the van is idling everything is fine. For the most part, in the event that Jan 2, 2020 · Check the footwells for water, possible heater matrix. External Coolant Leak. I smell coolant sometimes but I am not sure if it is residual smell from these other two leaks that Sep 8, 2019 · Check for leaking near the thermostat housing, if applicable to your model, and the water pump. 0 dCi 145 DPF Euro 6d-temp Expand. has Mar 4, 2024 · Addressing leaks promptly prevents further coolant loss. Incorrect or Low-Octane fuel. The signs of these leaks can be easy to miss because they Coolant (or antifreeze) is used in the engine to stop the water used to transfer heat to the radiator freezing due to low temperatures. Ideally, you inspect your car’s coolant levels regularly, at least once a month. They take 6. For the 2016 model year of Renault Trafic we have found that all trims use the same coolant: Trafic III 1. Add the tester fluid to the radiator, run the engine and check for color change indicating exhaust gases in the coolant. To check this, you may need to top up the system and then see if the engine overheats and leads to coolant loss again. Renault. The other two are a faulty head gasket or a leaking Aug 20, 2009 · Coolant got hot, but not to boiling point. If there isn’t enough coolant in the engine then this will affect how hot the heater core can get. 0 dCi 115 DPF Expand. Like. check for low coolant level, your radiator overflow jug should have coolant at the 2019. Check for the potential causes of overheating: 1. Another early indicator of a problem with your cooling system may be the check engine light on your dashboard. Air trapped in the cooling system may also limit coolant flow Feb 3, 2015 · overheating Meriva 1. - Check the coolant level every 15 days: keep the coolant level up to the level indicated in the coolant reservoir. It’s important to note that an internal coolant leak may not always result in overheating or visible signs of leakage. This is the most common problem when it Trafic. Step 3: Check if the coolant is circulating. Nov 11, 2012 · My 52 plate Scenic (1. Aug 10, 2014 · Check your main coolant hoses going into and out of the radiator. Nov 16, 2012 · 6. Jul 29, 2014 · 528 posts · Joined 2013. One of the primary reasons for engine overheating in Verano is a low level of coolant or antifreeze in the cooling system. Trafic II 2. Defective or split EVAP canister. If you refill the cooling system and it stays full then you might have a tiny leak that has been Nov 16, 2012 · 6. Combustion Leak Testing. 4. - Clean the radiator fins: the radiator may gather some garbage such as leaves, mud, or dust that clogs its airflow and its cooling qualities will decrease. Jun 9, 2010 · It's a Renault trafic 1. In that case, the temperature gauge will remain in the blue. Well, four main reasons that might be two are very expensive to fix, and the other two are relatively cheap. #8. Engine overheating: if coolant flow is restricted, the EGR cooler is unable to cool the exhaust gases. Sep 23, 2014 · Topped off the radiator, filled the resevior, and with a week the resevoir was empty and the radiator low. 5L of coolant so it has to have gone somewhere. Leak no longer exists, just this new overheating problem. You might have a busted radiator cap, or you might have a leak or busted water pump. If coolant loss is observed on such a vehicle, special attention should be paid to the coolant hose between compressor and condenser. You can remove the thermostat and test it in a pan of hot water, it should open just before it reaches the boiling point – usually around 95 deg C, then close as the water cools. When you 1st pump up the pressure , sit and watch the gauge for at least 5-10 min. Jun 27, 2017 · Symptoms of a worn, clogged or faulty EGR cooler. 4T. Air trapped in the cooling system that is limiting the coolant flow. During this time, the French carmaker has offered a total of three generations. Aug 22, 2013 · overheating can be cause by many things like faulty thermostat and faulty radiator pressure cap,too much water in coolant system need 50 / 50 water and antifreeze. One of the primary reasons for engine overheating in Megane is a low level of coolant or antifreeze in the cooling system. Sep 15, 2023 · 1. Could also be a head gasket leaking between a waterway and a cylinder bore, very difficult to spot. Sep 30, 2019 · 1. The pressure is controlled by the pressure cap. A wet spot or stain on the carpet near the dashboard can be from coolant leaking from the heater core. It can also be caused by airlocks or a clogged coolant system. External Leaks: Damaged hoses or connections can result in coolant dripping out, leading to visible puddles beneath the car. Without enough coolant, air pockets can arise, leading to ineffective cooling. I have found looking for spots on the floor/pavement or coolant residue in the engine compartment that kinda looks like a white colored salt type residue helps find tiny leaks. This will likely stop or hinder coolant flowing or circulating through the engine. Coolant plays a crucial role in maintaining the engine's temperature by absorbing heat and transferring it away from the engine. For the past 6 months, when I tow, (approx 6000 lbs enclosed race trailer) I have been getting overheat issues. 0 dCi 150 DPF Euro 6d Expand. External Leak. After only a mile or so the temperature guage quickly rises to 3 quarters- then falls back to the centre in a couple of seconds. Strange symptoms have appeared: a warning light in the speedometer, overheating and low coolant level. However, in the winter time when you turn up the heat, cool air is first produced but later on after the coolant is brought to the heating core, heated air is blown out. 2022. Issues with the cooling system can also cause the engine to run cold. May 20, 2017 · My garage: 1990 Renault Trafic T1100 Camper, 1992 Vauxhall Astra Mk3 Estate, 1991 Harley-Davidson XLH 1200, 1979 Triumph Bonneville T140E, 2006 Citroen C3 Reactions: ours2012 Save Share Coolant (or antifreeze) is used in the engine to stop the water used to transfer heat to the radiator freezing due to low temperatures. Check all coolant lines you can get to, possible split or very small hole. I keep losing coolant slowly over about 300 miles my low coolant DIC lights up. Trafic III ENERGY 1. Damaged coolant hose. This is a very rare issue, but it can absolutely happen! Oct 2, 2014 · Thanks. Van is a 2003 1. it does not require a gasket. If I keep the speed under 70mph, and light or no grade, the Feb 12, 2023 · There are a few different reasons that your coolant might not be building pressure. Over time, carbon can build up on the inside of the EGR cooler and restrict flow through the cooler. I suspect it could be a faulty function of the PTC heater. Jul 22, 2016 · Step 2: Remove the cooling system pressure cap. replace your coolant reservior cap; the rubber ring has become brittle and "steams" the coolant out as you drive. Lowered coolant level with no leaks. And as far as coolant flow-- If you are not overheating: You are getting coolant flow and your water pump is working fine. If the EGR cooler has any issues that restrict the flow of exhaust gases through the cooler it can cause the engine to overheat. When I open the bonnet the coolant is down below the minimum mark. If it's permanently stuck open then the car could be 'overcooling'. Take a look at the pump and inspect for signs of leaks coming from it. Common repairs required to correct overheating are: • Waterpump replacement Feb 20, 2012 · Hi Melody- it feels like you could be right. 6 megane coupe phase I, i have been losing around 1/2 litre of coolant every couple of weeks. Overheating symptoms like steam coming from the engine bay, a hot smell, or the temperature gauge in the red zone should not be ignored. We have a 2005 Jeep Liberty diesel. If the coolant level is low or there is a leak in the system, the engine may overheat. The water pump plays a pivotal role in the engine’s cooling system by circulating coolant through the engine and radiator. Trafic. 2016. The two cheaper possible causes are a bad expansion tank/radiator cap or an external leak such as cracked hoses. The coolant is being consumed inside the engine (which is not a good thing). HELP!, My Kangoo (2000 1. It could also be a faulty coolant temperature sensor, a low coolant level, a bad water pump, air in the cooling system or a bad temperature gauge. Engine Overheating: If your temperature gauge consistently shows higher-than-normal readings, it could be due to low coolant levels. 0 dCi 90 DPF Expand. Mix a 50/50 engine coolant and distilled water and pour it into the coolant tank. Coolant plays a critical role in regulating the engine’s temperature by dissipating heat. So look around the firewall where the coolant goes into the heater core. with it running, grab a bright flashlight and see if you can find any drips. Low coolant or air in the cooling system. Phil C. Mar 24, 2013 · 17 posts · Joined 2013. I'm 99% sure that the oil cooler is cooled by the coolant on these. If your radiator cap doesn’t have pressure and your temp gauge reads hot, you may have a leak in one of your hoses or head gasket failure. Refill just the radiator, same thing. Check the thermostat housing, if it's of the plastic type, these can warp/crack, difficult to spot a leak from it. Thermostat. The latest of these hit the markets Nov 10, 2018 · 3741 posts · Joined 2011. Had the oil cooler, egr cooler replaced back at about 70k, and now has 155k. Jul 27, 2015 · I have 2004 2. Be ready for a gurgle and a geyser out of the expansion tank that purges the airlock, then replace the cap Check the coolant levels; the van uses 50% water and 50% antifreeze, especially during summer. common causes of overheating are coolant too low, which is what i suspect was the case when you first got it. If I keep the speed under 70mph, and light or no grade, the Dec 30, 2018 · Finding small coolant leaks can be extremely difficult. Other causes of lower boiling point are contamination of coolant, or poor coolant/water ratio. Faulty thermostat. 6 dCi 120 DPF Expand. 9D) is overheating and losing it's coolant. often the best way to find a leak, when the system is under pressure look and listen may track it down. Loss of coolant from the cooling system: this could be causing an internal leak in the Mar 6, 2023 · The most common reasons why your lower radiator hose is cold are a faulty thermostat, a bad water pump, or a low coolant level. Another common cause is there is some sort of blockage in the radiator. Here is a more detailed list of the six most common causes of a cold lower radiator hose: 1. Nov 10, 2020 · Stay calm and pull over to the side of the road. The most common reasons why this happens include a clogged radiator, faulty thermostat, bad water pump, faulty cooling fan, plugged radiator hoses, blown head gasket, or a broken belt. 1683 posts · Joined 2010. Suspension Control Warning Light; This warning light will appear if the suspension system fails. I have a 2005 CC xlt 6. #2 · Jul 26, 2015. i checked the oil for any coolant and the oil is fine and its not overheating so i doubt its a head gasket, there is a pink dry coolant residue around the thermostat housing and around the gearbox, i can never seem to see it leaking to pin point where its actualy coming from. We keep losing coolant. Mar 6, 2024 · Lane depature warning Light; It is a warning lamp that lights up when the lane change is made without using the signal in the vehicles produced by today’s technolgy. For the 2022 model year of Renault Trafic we have found that all trims use the same coolant: Trafic III 2. Leaky intake manifold gasket. Jun 13, 2016 · (Renault), coolant, cooling-system, overheating (car maintenance) In that when left to idle and engine gets up to temp and when revved the car will hold a lot of pressure in the main rad pipe. The cooling system is (or should be) a sealed system. Sep 27, 2018 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Dec 17, 2015 · some cars are made with the thermostat housing built just like the one you have. Notice also that when engine is hot the reservoir start spitting coolant through overflow, looks like has to Mar 1, 2017 · Furthermore, a cooling system pressure test performed at the tank is recommended, as well as testing the cap to see if it holds pressure. When the coolant level is low, there is not enough fluid to absorb and transfer heat away from the engine. Check very carefully for crystallised deposits from any coolant pipes or surrounding areas. Check the floor under the dashboard for leaks. Jul 2, 2023 · Check car coolant level. 0 dCi 110 DPF Euro 6d Expand. SOURCE: ONGOING COOLANT LEAK. #9 · Jun 22, 2010. If it’s malfunctioning, it can lead to coolant not circulating properly or leaking out. If you can’t pull over and stop the car, turn on the heater, as it will draw in the warm air from the engine and The heater may stop working in Renault Megane due to low coolant level or air in the cooling system, clogged heater core, bad thermostat, faulty blend door actuator, bad water pump, dirty cabin air filter, bad blower motor, or HVAC control unit malfunction. There's always the possibility that the heater core located behind the dash is leaking, but not very likely. I just had to fix a leak on my saab that was leaking directly onto the exaust pipe so as soon as I turned it off, the leak went away and no drips under the car. look for water pump weep hole leak, if coolant leaking out weep hole water pump bad need replacing. I have meriva 11plate and it's overheating. Remember the pressure cap allows the water to get hotter than boiling point WITHOUT ACTUALLY BOILING. Low coolant level or air in the cooling Dec 10, 2022 · However, if your car is overheating with full coolant, here are six common causes and fixes that will help you. cold , then try warm engine . Jan 18, 2024 · When this happens, the coolant mixes with the engine oil, leading to a decrease in coolant level. 9DCi. I have replaced the thermostat, new rad, new header tank cap, new water pump, re-bleed numerous times the coolant system, bypassed the turbo and heater Jan 7, 2016 · 1. 6 dCi 145 DPF Expand. If the coolant reservoir is empty and no leaks show, you should not start the Jun 12, 2019 · Cooling fan Traffic Mark 2 ( Solved ) Hi , my problem is my cooling fan works but its not coming on when my renault trafic 2004 reaches temp . We had a little white smoke this morning. S. Check the coolant level. However, the engine may only fill up to around 80%, leaving about 20% air. Jan 7, 2018 · Coolant loss, like major loss, the quantity of between the Max and Min level on the expansion tank in the space of one run of the engine (5 mile drive) Lumpy idle sometimes as if the thing is missing a cylinder - but not all the time, no problems at higher revs. 0 dCi 170 DPF Euro 6d Expand. I replaced it (including new cork) but it's still overheating. Dec 26, 2019 · What happens…. a stuck closed thermostat not allowing coolant to circulate. Afternoon all, wondering if anyone has seen this before. Either way, low coolant pressure is going to lead to an overheating engine. Blown Head Gasket: A damaged head gasket can allow coolant to leak into the engine’s combustion chambers. One of the first symptoms of a potential problem with the EGR cooler is engine overheating. A common cause is a faulty thermostat. These include: Adding Coolant: If the coolant level is low, adding more coolant can help. Check all the other hoses too. In the above vehicles, a damaged coolant hose may lead to the loss of coolant. It started from cracked coolant reservoir, was losing coolant and thought that's the reason. Jun 5, 2021 · For inward coolant spills, you should take a gander at the head (chamber block), it could likewise be that you have a defective head gasket, as this will allow the coolant to leak out. Jun 15, 2022 · First, you should make sure your engine isn’t overheating. Hey there. Engine oil or coolant contamination. For the 2019 model year of Renault Trafic we have found 7 trims and 2 different types of coolant used. Excess engine combustion heat is being put into the cooling system (another not good thing). Replace cap if not already done, check bottle for leaks as noted. A faulty water pump can overheat your vehicle because the water pump is responsible for circulating coolant throughout the engine. If the EGR cooling system develops a leak, water can escape into the recirculating exhaust gas, and pass through the engine, and disappear out the exhaust pipe, with virtually no symptoms, except of course for gradual coolant loss, the cause of which can be hard to diagnose. So for years, my heaters havent been very good, and going down hill off-throttle the van would cool down, indicating a thermostat 02. 9D help!- overheating & losing coolant. The old italian tune up can point out weak links in a system. Suspension Control Warning Light. There could also be a leak between the pump and engine block if the pump's gasket has failed. This has been going on for a couple months, but the mechanic said everything looks okay. oy ie dm pv xv zg ps rn fd cz