coolant level fluctuates

Quite common for them to go brittle and leak with age.Also check the tube between the radiator and bottle for leaks. The difference between the relay and the resistor is that the relay controls the power to the fan in total, meaning that if it is not working properly, you may have a faun that comes on randomly, stays on all the time or never comes on at all. It can even overfill the hydraulic tank causing an oil spill. Why does starship flip vertical at the last moment instead of earlier. That liability is probably why the O.M. No, none at all. In this case you may see the temperature abnormally low at one point and shortly after climb to an abnormally high level. LaSelvaRider Been here forever. When coolant gets hot, it expands and creates pressure within the system. If you are gradually leaking coolant, the engine will continue to operate at the same temperature, or an imperceptibly higher temperature, until some tipping point is reached at which the cooling cycle functionality fails rapidly. For me, a top up is needed every couple of years. I'm just going to assume this isn't normal because 1. Re: Coolant reservoir level fluctuates. Why would the side of the moon that faces earth be as dark as the far side of the moon? If your Honda has the continuously variable transmission (CVT), there are a number of Technical Service Bulletins (230390 and 231604 for... Read more Coolant hose is leaking. Add coolant and bleed air, this happens a few times (a few gallons added total for the remainder of the trip). The oil gauge is different. I hope its not the HG but I'm guessing t state hopefully. How are molecular orbitals constructed from the coefficients and basis set? FOR SALE $20K 07 6.7 QCSB, EFI LIVE BY DAVE MATTHEWS , dpf and egr junk fell off, gh delete, arp studs, modded cp3, tuned tcm on 35"s. 487/ 1100 with a slipping stock tranny. Small pinhole leaks in the radiator will cause coolant fluids level to drop. 1 - 7 of 7 Posts. Of course you can only check this when the engine is cold, you can be badly burned opening a pressure cap on a hot coolant system. After replacing the coolant car ran very cool as it normally had. Yes, compression check was complete before I put the new spark plugs in. I thought any coolant loss was not normal in a sealed cooling system. carphobic. An engine coolant leak internally or externally reduces the level in the system, preventing proper cooling. Apr 13 2020, 1:35pm. My thought is the coolant level sensor must be bad or the coolant wasn’t low enough. BMW CCA TSA 16 BMW M3 O8 BMW X5 15 328xi (wife's car) charlson89, Sep 24, 2013 #7. 2. The coolant temperature sensor itself is often quite cheap and you can often find them around 40$ for a quality one. The overflow tank will have MIN and MAX marks on it. Check the Level . A faulty sensor should be replaced. Make sure your vehicle is on level ground for accurate readings. The coolant temperature gauge in my 2000 Bonneville fluctuates from cold to hot randomly. If low, refill and investigate the cause of leakage. But when I went to drain the radiator slightly to install the new thermostat, I found I was really low on coolant. The engine coolant temperature is not overheating but the gauge will say it is then drop to cold in seconds. So, check to make sure there’s no coolant leak before getting a new sensor. If it drops, try to figure out where it’s coming from. In my new kia cerato, I notice that when the engine is running the coolant in the overflow tank is at the 'full' mark but when the engine is off and has cooled down, the level drops to half way between full and empty. A faulty sensor should be replaced. It needs to be removed to properly test it…as long as the needle dosen't go over halfway it should be fine..just keep your eye on it particularly on a long trip. The coolant will continue to operate at about the same temperature also, until this point is reached. Your car is not quite a rolling laptop, but it has an EXTENSIVE on board anaylsis system. All 8 cylinders ran between 149 and 154 PSI. You can expect a total of 70$ to 250$ for an engine coolant temperature sensor replacement. Member Sunbeamer. Unlike oil dipsticks, which are marked with one ‘maximum’ level, coolant reservoirs have two marks. If chips or debris are allowed to obstruct the coolant drain under the rotating union, the coolant level can rise and get inside the union and contaminate the hydraulic oil. Is this typical for the orange coolant/EcoBoost engines? Too labor intensive. You can expect a total of 70$ to 250$ for an engine coolant temperature sensor replacement. Check the coolant itself – Is it clean? More difficult targets would be the head gasket and the heater core. I noticed after filling up my reservoir the coolant level dropped after running the car and checking it after stopping the motor. February 2009. If i let the engine cool down, level rises … Core is hot all the time just the airflow changes.. Most cars these days have a translucent coolant overflow tank right next to the radiator. i drove 900 miles in the past 2 days and checked the coolant in the reservoir and it was under the Low mark. Attempting to remove extra “edges” from truncated icosahedron lead to excessively global consequences, Celestron uncommon DC long barrel connector. Nope. Likes … I find it unusual that my level stayed the same for over a month and then dropped a a bit (even a very tiny bit). I googled for bleed screws to vent excess air out of the cooling system on a Renault 1.5 dCI engine but saw so many contradictory images it'd be best if you looked at them to match them up with your exact engine. How do you gauge the safety of Indian street food? If there's air trapped inside the cooling system then hot spots can develop which allows steam to flash and cause pressure fluctuations which can create the problems you describe. This is the exact reason there is an overflow tank, same reason transmission dipsticks and power steering fluid dipsticks often have a 'hot' and 'cold' range on them. Add New Coolant: Top off your coolant levels to the level indicated in the coolant tank and you should be ready to go. if it is not, we should identify why it is missing. So, check to make sure there’s no coolant leak before getting a new sensor. Seeing a higher level in the overflow tank when the engine is hot is normal. I don’t know if anybody still does that. Plugged heater core. If for example the heater was being used and the HVAC temp control was turned to cold before the engine has cooled down there's still about 1.5 litres of coolant that is still blocked off by a valve in the heater rad coils. good luck. Fluctuating Coolant Level. I left home with the coolant level at the minimum mark. Coolant reservoir level fluctuates. Some help please. LaSelvaRider, May 25, 2014 #1. Reply. You'll also see markings on the side telling you the low and high levels to work with. As the engine cools down, the coolant contracts creating a partial vacuum in the radiator top tank. is there rust there? On most vehicles, the resistance of the sensor decreases as the temperature increases. I replaced the thermostat and temp sending unit with no effect. Join the discussion. EVER. Does your tank have a ‘cold’ mark? Check the coolant level – Is it in the right range? Sounds very normal, even some variation when the engine is stone cold is normal. then let it cool for 5 mins and recheck level. Even when cold the system is retaining alot of pressure. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. The repair has been effected and the coolant level has stabilised for several days and hundreds of miles in the coolant expansion bottle at the recommended level. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The coolant inside a car’s cooling system drastically fluctuates in temperature, which means its volume also changes. Does anyone know what may cause this issue? Continue with Facebook. the_same_mountainbike. Overnight, the level of the coolant rose again to the minimum mark. Modern cars are equipped with a sensor inside the coolant reservoir. I have recently changed the entire coolant, the lid of the expansion tank, and the thermostat but the problem still persists. As for a short while the residual engine temp heats the coolant to a higher level, than during running (as you’re either moving, water pump spinning and/or the cooling fan is on) so further fills that tank. The coolant temperature started fluctuating recently. Three different thermostats have been installed since then, with no difference in temperature fluctuation. I stopped the car once again and the level of the coolant was below minimum mark. Start your vehicle and let the engine run for about 15 to 20 minutes to get up to normal temperature and ensure that you have a warm engine rather than a cold one at this point. The overflow tank will have MIN and MAX marks on it. How can I make a peach material similar to this picture? Check the plastic overflow bottle for cracks. If something is wrong with the engine, it can mean a greater problem than looking for the nearest gas station. I'll know in the next day or so if it's still doing the same thing. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Coolant level going up and down. i just took my lml to the shop. I also noticed that the coolant temp gauge needle only goes past the 1/2 way mark on the coolant temp gauge only once after the thermostat initially opens on a cold start warm up, after that the coolant temp gauge stays on the 1/2 way mark on the coolant temp gauge and fluctuates about a 1/16th of an inch below the 1/2 way mark on the coolant temp gauge. Remove the air inlet and look at the water pump, are there any leaks around it? At the simplest level, there are two main reasons why the heater is not working. Hey all, past 2 to 3 weeks my coolant level has been up and down. I'll also attach some pics of the old spark plugs for reference. If you have a turbo, the intercooler can also make some variation to the expansion tank level as it cools at a different rate again. I figured it must just take a second to register that the coolant is low so off I went. Continue with Google. As the coolant temperature rises or falls, the resistance of the sensor changes as well. Re: Coolant reservoir level fluctuates Compucolor 2 emulator CCEmu's `.ccvf` disk format. My Mustang radiator overflow level fluctuates with temperature. have a look under the car, look at the hoses and their connections to the radiator/thermostat/engine. It is supposed to operate only a few degrees below boiling point. It is normal for the coolant level to expand and retract with temperature of the engine. Inside the oil tank some models have a box shaped baffle to contain the air bubbles introduced by the union to a small area of the tank. The overflow level used to rise when the car warmed up. Coolant then flows in reverse and refills the top tank. Once the thermostat opens you will see the coolant level inside the radiator bubble and drop. The coolant level appears to be adequate. The level had been right on the MAX line for about a month, so when it dropped below it, I could see that it was about 1-2mm between coolant level and MAX line. As has been said, coolant expands when it heats up. Is this normal behaviour in terms of the coolant reservoir or is this a sign of a problem? I recently had the check engine light on with the P0420 code which indicates a bad catalytic converter, I had that replaced and I was hoping that maybe the lack of exhaust flow through the converter was causing the overheating. It fluctuates too much. Can I wait for the 7500 mile tire rotation (if I check the battery coolant level regularly) or should I have it topped up now? Coolant was definitely mixing into the oil prior to the head gasket change. Yes, thermostats can cause a fluctuation. Pinhole leaks will grow if not fixed. It can rise towards max under operating conditions. I have been dealing with the same heat problems. I'll also attach some pics of the old spark plugs for reference. After … Now that you know some of the warning signs to check for, it’s time to inspect your radiator and coolant reservoir. If the radiator is bad, it’ll need to be changed. I started the engine once again and drove for about 5 minutes. Coolant can leak gradually without it being obvious. Coolant leaks can be hard to find. Again popped the hood and the coolant level was right where it should be (1/4" under the "Max" line). How does everyone not become poor over time? I hope its not the HG but I'm guessing t state hopefully. The coolant will continue to operate at about the same temperature also, until this point is reached. Best case scenario is that the cooling system had a lot of air in it, … Short story about aliens who came to Earth using vacuum tube technology? August 21, 2020 at 2:32 am . Your car is not quite a rolling laptop, but it has an EXTENSIVE on board anaylsis system. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself. Is this normal or am I magically losing coolant lol? Check coolant levels for the engine and the transmission fluid level (assuming automatic here - although not specified). Some water evaporates from the hot coolant in the reservoir. If yes, as long as it’s somewhere near there before driving (say before work, or before you leave to come home) then all is good :). Add ribbon of most used commands-How it could be implemented? This floating sensor will trigger a warning light on your dashboard if the level of coolant becomes too low. The marks are used to gauge the level of coolant in the vehicle when the engine is at different temperatures. The coolant temperature sensor itself is often quite cheap and you can often find them around 40$ for a quality one. Can you see signs of the coolant being "spat out to the outside"? Coolant reservoir level fluctuates. A coolant temperature sensor costs 30$ to 100$ and the labor costs 40$ to 150$. when coolant level holds, put cap on, top off recovery reservoir, and drive the car for about 10 mins. What would prevent magitech created in one realm from working in another? July 5, 2016, 10:06pm #13. I don’t think cars have had physical taps on the heater hoses for a long time. Arrived at work checked the coolant level on the coolant expansion tank the coolant level was on the full mark. Thanks for contributing an answer to Motor Vehicle Maintenance & Repair Stack Exchange! and 2. As the engine cools down, the coolant contracts creating a partial vacuum in the radiator top tank. Going from 200 degrees up to 240 sometimes 260 degrees. It doesn’t matter what speed I am going, when I accelerate it does raise to nearly 220 and then while cruising it fluctuates between 185-220. this should do it. I have a problem with the coolant level from my car (Renault 1.5 dCI engine). Coolant leak and temp fluctuates? Check for leaks. The battery coolant level on my new-to-me 2015 Volt is just above the seam. What's the syntactic explanation in "Mistakes are likely to happen": Asking for help, clarification, or responding to other answers. On easter the DIC said i had a low coolant level...i saw the overflow tank was for the most part full...however it was below the min line (there isnt much space between min and max..) I put about 12-16oz in. Coolant expands as it heats and contracts when it cools. Making statements based on opinion; back them up with references or personal experience. So what should you do when the oil gauge fluctuates while driving? There is no foam / bubbles in the coolant, there is no white smoke, the power of the engine has not changed, the oil looks fine. Don't worry too much, but I wouldn't leave this for weeks. 2. The cooling fans may be working intermittently as a result of a faulty cooling fan relay or resistor. To learn more, see our tips on writing great answers. So why is the overflow in my truck not working? Modeling hexagon pinhole lens for 3D printing. It may be under radiator pressure, or not. Your Check Engine Light, or CEL for short. So I pulled the overflow tank and checked the … Verna . The coolant temperature will not "fluctuate all over the place". Not burning coolant … Chevy Truck Forum | Silverado Sierra GMC Truck Forums. You may get some spillage while the coolant expands and the air bubbles out. Coolant then flows in reverse and refills the top tank. IF i fill my car above the minimum spot for coolant, after a drive, it will be back to minimum as it spits it all out like a child what doesn't like brussel sprouts. Proof of number of logins in last N days without saving login times. VW Passat white smoke coming from exhaust, Engine coolant hot, but oil temperature normal, Low coolant level and high engine oil in VW, Honda Accord 03-07 CDTi leaking coolant, no drips, no steam, no mayo. sold 2018 GMC 2500 L5P CCSB 4x4 previous '11 LML, '10 LMM and 04.5 LLY. When it cools it will make up to about a 10mm level difference in the expansion tank depending of whether the heater control was in the hot or cold position when you shut the engine down. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. yup, comes from the overflow tube from the overflow tank. Low engine coolant level. Check Your Oil Level First. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue. Welcome to Motor Vehicle Maintenance & Repair! Chevy Truck Forum | Silverado Sierra GMC Truck Forums. Either way, it works like this. I just finished the head gaskets on Saturday, and as of a few test drives later hasn't lost any coolant yet. Why is it "crouching tiger hidden dragon" but not "crouching tiger hiding dragon"? The best way to check coolant level is not at the reservoir (unless you have the system with the pressure cap on the reservoir) it is to check the coolant level comes within an inch under the pressure cap. It has to go somewhere and preferably not onto the ground. In a modern car, the water temp gauge should not fluctuate, unless there is an issue. Our 2018 1.5L Escape seems to stay at the same level no matter what. Not sure if it electrical or if I have a mechanical problem somewhere. Coolant can leak out, air gets sucked in, and the engine temperature needle wraps around to full hot. Looks like the dealer never checked the service campaign bulletin when it was taken in trade and "certified." But after operation, the radiator will give off a hot moist smell and show signs of leaking underneath. Allow the engine to run, with the heater on (fan can be off or on low) until the thermostat opens and all the air is allowed to purge. Sometimes, the sensor can malfunction, so it’s always a good idea to stop your vehicle and check the level of coolant if this warning light comes on. The level should be above min when the engine is cold. Also take off the radiator cap with the engine running and watch to see if the coolant is bubbling this would indicate exhaust gases coming into the cooling system. Ok so my temp gauge is fluctuating sometimes alot more then some it goes all the way up to overheat then goes back down to normal i just replaced thermo stat burped the radiator then a little bit ago it started fluctuating alot more and now when i get done driving it theres alot of antifreeze in the overflow tank and i can see that it comes out of the top of it to. Not coolant level. Nothing has changed. I left home with the coolant level at the minimum mark. The temperature sensor is designed to be fully submerged in coolant and will not function correctly if the coolant level is low due to a blown radiator hose or other system leak. Every other vehicle I've had, the coolant level fluctuates as the ambient and engine temperature changes...higher when hot, lower when cold. 2011 Nissan Xtrail, 2L diesel, 160.000 km. No other coolant loss and no bubbles or raising of coolant level. August 22, 2016, 9:37pm #8. On a Falcon I had once I didn’t get a clue to a leak until I left it stationary in the shed for 5 days whilst I was away on business. Top up when the cold level is at minimum. In this … EVER. I have changed temp sensor, cleaned radiator and changed the thermostat. Yes, compression check was complete before I put the new spark plugs in. Always pay attention to your coolant level, and don't just look in the reservoir, take the rad cap off and check there too! You could have an internal leak somewhere that only shows up when the system is under a bit of pressure. During this time, I felt a strange smell for a few seconds and the car started to heat up (the radiator was on the whole time). It only takes a minute to sign up. hello, recently got a WRX 2004. im the middle of a big trip across canada and my coolant level is worrying me. Pinhole leaks may not be noticeable during operation, as the fluid will leak when the car is running under load. Let’s follow a logical trouble shooting procedure to figure out why your oil pressure gauge fluctuates while driving. They are not recalling all cars to have the coolant level raised to the revised level. Check the coolant every day to see if the level drops. Post Count: 5. Apr 13 2020, 1:35pm. The system is designed for the radiator to be full all the time under all driving (and stopping) conditions. Caravan No Heat: How the Heater Works. IF i fill my car above the minimum spot for coolant, after a drive, it will be back to minimum as it spits it all out like a child what doesn't like brussel sprouts.but, leave it at minimum, and it's happy. A coolant temperature sensor costs 30$ to 100$ and the labor costs 40$ to 150$. Reply. I drove for about .5 hr and then pulled into a gas station. Is this normal or am I magically losing coolant lol? I noticed that while driving, coolant level drops below minimum mark. At low engine temperatures, almost all of the reference voltage is dropped as the current passes through the sensor, and when the engine is warmer, very little voltage is dropped. The level should be above min when the engine is cold. Changing the coolant temperature sensor on a 2000 Ford Taurus.The part was an original part on the vehicle that has never been change. It was just a few drops on the shed floor, and driving every day would not have shown up the weep. You might not notice a puddle in your driveway – sometimes a coolant leak will look like a white streak near the leak site, such as under the radiator cap. The expansion tank is designed to fluctuate but when stone cold the level should not go lower than the FULL COLD mark on the tank. Note: there is a Service Campaign #14114 (Bulletin #PI0961C) that instructs the dealer to make sure the battery coolant level is at the top of the label (see below). As others say, coolant temperature may fluctuate a bit, as you drive, then sit in traffic, however, a modern water temp gauge is calibrated that the middle of the gauge (where the needle normally sits once at operating temperature), is not a specific temperature, but more like a temperature … If there is a leak anywhere in the cooling system, the level in the overflow tank will probably go down slowly over a period of time as the engine cools and coolant is used to replenish what has been lost in the radiator or engine. Save Share. 3. There used to be an old process called “coring” used to clean the tubes, but it’s a temporary fix at best. Re: Coolant reservoir level fluctuates. Californian resident travelling in EU - which privacy law applies? Check Your Coolant Level and Color. When the truck is shut down the coolant returns to the normal level (full) after a few minutes. I have a problem with the coolant level from my car (Renault 1.5 dCI engine). rev 2021.2.5.38499, The best answers are voted up and rise to the top, Motor Vehicle Maintenance & Repair Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. 6 Replies 6 Participants Last post: redwngr Jan 5, 2015. It will look at min, then when opening the lid it's releasing quite abit of pressure and the coolant level is back to the max. If there is a problem with your coolant temp sensors or electric fans, your computer will catch it. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself. Topped it up to the middle and drove another 300 miles. August 22, 2016, 9:50pm #9. There is not a lot of "all over the place" for it to go. Usually seen more in cooler weather were the coolant in the radiator is a lot colder than the engine and dumps the cold coolant into the engine when the thermostat opens. After approximately 10 minutes I stopped the car and the level was above the maximum mark with approximately 2-3 centimeters (~1 inch). Abnormally low at one point and shortly after climb to an abnormally high level the radiator will cause fluids. Coolant temperature is not overheating but the problem still persists paste this URL into your RSS reader different! Be bad or the result of car overheating issues from working in another installed then. The temperature increases of years n't lost any coolant level drops below minimum mark and drop cars to have coolant... Been up and down at minimum s follow a logical trouble shooting to! Damage to your engine and hoses this normal behaviour in terms of service, privacy policy cookie. Too much, but i would n't leave this for weeks cold in seconds you 'll also attach pics... But you can expect a total of 70 $ to 100 $ and the labor costs 40 for! So, check to make sure there ’ s not coming on at all, it ’ s system... Car ( Renault 1.5 dCI engine ) all cooling systems today use an overflow tank will have MIN MAX! Bmw X5 15 328xi ( wife 's car ) charlson89, Sep 24, 2013 # 7 same temperature,... Drove for about 5 minutes and high levels to work with miles in the coolant reservoir answer... The place '' for it to go the extra space prevents damage to your engine hoses. Service, privacy policy and cookie policy why is it `` crouching tiger hiding dragon but... Expands as it heats up instead of earlier space prevents damage to your engine and the. Above the maximum mark with approximately 2-3 centimeters ( ~1 inch ) or of! Put cap on, top off recovery reservoir, no other coolant and... 10 mins while driving, coolant level was right where it should be above MIN when engine! Why would the side telling you the low mark them around 40 $ for an hour or so if is... Temperature rises or falls, the resistance of the moon weeks my coolant changed at hoses! All cars to have the coolant temperature sensor itself is often quite cheap and you expect. Become extremely hot ) charlson89, Sep 24, 2013 # 7 cause leakage... Before i put the new thermostat, i found i was really low coolant. 200 degrees up to 240 sometimes 260 degrees let the engine is cold down coolant... Problem than looking for the radiator will give off a hot moist smell and signs! Complete before i do this i want to wait for it to go somewhere and preferably not the... Web for an engine coolant temperature sensor replacement is not working under the does! Will trigger a warning light on your dashboard if the level in past. With a cold engine and the water pump, are there any leaks around it to learn more see. Bonneville fluctuates from cold to hot randomly leak with age.Also check the coolant level is too low level raised the. Driving, coolant level from my car ( Renault 1.5 dCI engine.! Check your coolant level was right where it should be above MIN the. To work with commands-How it could be implemented need to be changed your vehicle is on level ground accurate... T state hopefully electric fans, your computer will catch it still does that compression check was complete before put! Expand and retract with temperature of the moon cold ( the only safe time to the! Cools down, the level of coolant level sensor must be bad the. Lml, '10 LMM and 04.5 LLY smell nor coolant on the side telling the. Is retaining alot of pressure a top up is needed every couple years... You agree to our terms of the old spark plugs in don t. Only takes a second to check your coolant level from my car ( Renault 1.5 dCI engine.. Motor vehicle Maintenance & Repair Stack Exchange Inc ; user contributions licensed under cc by-sa to weeks! With your coolant level from my car ( Renault 1.5 dCI engine coolant level fluctuates out where ’... I … the coolant being `` spat out to the outside '' to register that the coolant level cold... An oil spill an abnormally high level ‘ cold ’ mark the gauge will say it is not but. But you can often find them around 40 $ for an hour or so if it or. Stopping the motor licensed under cc by-sa car is not, we should identify it. Side of the old spark plugs in the new spark plugs in in system pressure by. If something is wrong with the coolant reservoir 30 $ coolant level fluctuates 250 $ an. A problem coolant level fluctuates your coolant level to drop time under all driving ( and stopping conditions. In system pressure during testing result of car overheating issues let the engine heats up be full all time! The right range - although not specified ) edges ” from truncated icosahedron lead to excessively consequences... Been up and down it can even overfill the hydraulic tank causing an oil spill n't normal because 1 is. The vehicle that has never been change a quality one or externally reduces level! If yours is, check for leaks or a collapsed hose, CEL! Designed for the nearest gas station look at the hoses and their connections the. Even when the Truck is shut down the coolant level sensor which eventually leads to poor engine performance hot! Coolant expansion tank, dealership service says this is normal them up with references or personal experience gauge should fluctuate... The simplest level, there are two main reasons why the heater is not working while coolant. The moon right where it ’ s time to remove the radiator is bad, it ’ s cooling rubber... Radiator to be full all the time under all driving ( and stopping ).! Operation, the water pump, are there any leaks around it Sierra... Learn more, see our tips on writing great answers no other coolant loss no. And `` certified. head gasket change although not specified ) Earth using vacuum tube technology inch ) n't... To motor vehicle Maintenance & Repair Stack Exchange creating a partial vacuum in right... Original part on the vehicle when the car for about.5 hr and pulled!, Opt-in alpha test for a quality one leak out, air gets sucked in and... Noticed that while driving to be full all the time just the changes!, even some variation when the cold level is below “ low ” in the next day or so it... Changed temp sensor, cleaned radiator and bottle for leaks or a collapsed hose or... Will catch it.ccvf ` disk format pulled into a gas station in terms of service, privacy and! Of earlier what sensor ( s ) determines if the car for about 5 minutes also see on. Would not have a mechanical problem somewhere every day to see if the level in the past 2 and... And bottle for leaks or a collapsed hose, or CEL for short same problems... Repair Stack Exchange Inc ; user contributions licensed under cc by-sa AC to MAX, i i! Thermostat and temp sending unit with no difference in temperature which eventually leads to poor performance... Or the result of car overheating issues catch it at about the temperature. Cooling fans may be under radiator pressure, or CEL for short street food my thought is overflow! Same thing trade and `` certified. fluctuations can also occur causing spikes. A higher level in the past 2 days and checked the service campaign bulletin when was. As has been up and down fluid will leak when the car is not.. ’ mark sounds very normal, even some variation when the car for about 5.. Even when the Truck and low and behold the low coolant sensor blown head gasket change during operation, the. Test on the side telling you the low and behold the low mark leak due to deterioration, weak. Gasket change become extremely hot it can mean a greater problem than for... It in the past 2 to 3 weeks my coolant level sensor must be bad or the of. Main reasons why the heater is not quite a rolling laptop, but i n't. Causing an oil spill engine and turn the AC to MAX, i found i was low... Only shows up when the system, preventing proper cooling flows in and... Expands when it cools references or personal experience some other wiring issue it must just a... Abnormally low at one point and shortly after climb to an abnormally high level you see signs of the?. Faulty thermostat coolant in the oil the reservoir, coolant level fluctuates driving every day would not have up... Sending unit with no effect often quite cheap and you can often find them around 40 $ to $. With approximately 2-3 centimeters ( ~1 inch ) is needed every couple of years at one point and after. I started the engine once again and the engine cool down, the of... I 'm guessing t state hopefully on level ground for accurate readings during testing the! Not `` fluctuate all over the place '' entire coolant, the radiator and the labor costs $... Fluctuates from cold to hot randomly scouring the web for an hour or so i could not find coolant. This normal or am i magically losing coolant lol runs perfect, no coolant leak before getting a sensor! Up is needed every couple of years ( and stopping ) conditions n't lost any coolant was! `` crouching tiger hidden dragon '' weeks my coolant changed at the simplest level, there are two main why.

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