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 … 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). Nothing has changed. 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. Remove the air inlet and look at the water pump, are there any leaks around it? 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. If it drops, try to figure out where it’s coming from. A coolant temperature sensor costs 30$ to 100$ and the labor costs 40$ to 150$. I don’t think cars have had physical taps on the heater hoses for a long time. Not coolant level. I don’t know if anybody still does that. You can expect a total of 70$ to 250$ for an engine coolant temperature sensor replacement. Caravan No Heat: How the Heater Works. The cooling fans may be working intermittently as a result of a faulty cooling fan relay or resistor. The level should be above min when the engine is cold. Your car is not quite a rolling laptop, but it has an EXTENSIVE on board anaylsis system. So why is the overflow in my truck not working? For me, a top up is needed every couple of years. I left home with the coolant level at the minimum mark. Can you see signs of the coolant being "spat out to the outside"? Why would the side of the moon that faces earth be as dark as the far side of the moon? Making statements based on opinion; back them up with references or personal experience. You may get some spillage while the coolant expands and the air bubbles out. Now that you know some of the warning signs to check for, it’s time to inspect your radiator and coolant reservoir. 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. 2. In a modern car, the water temp gauge should not fluctuate, unless there is an issue. The overflow tank will have MIN and MAX marks on it. I don’t think cars have had physical taps on the heater hoses for a long time.Core is hot all the time just the airflow changes.. Yep, both my cars are like this, Last car I had that used a heater core tap was back in the 90s. Overnight, the level of the coolant rose again to the minimum mark. Coolant was definitely mixing into the oil prior to the head gasket change. 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. I noticed after filling up my reservoir the coolant level dropped after running the car and checking it after stopping the motor. Going from 200 degrees up to 240 sometimes 260 degrees. Re: Coolant reservoir level fluctuates. Our 2018 1.5L Escape seems to stay at the same level no matter what. 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. There is not a lot of "all over the place" for it to go. I have been dealing with the same heat problems. If the radiator is bad, it’ll need to be changed. The coolant temperature will not "fluctuate all over the place". 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. A cooling system rubber hose may begin to leak due to deterioration, or weak hose clamps. I drive a Hyundai. February 2009. 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. August 21, 2020 at 2:32 am . when coolant level holds, put cap on, top off recovery reservoir, and drive the car for about 10 mins. I don’t think cars have had physical taps on the heater hoses for a long time. Does this car not have a low coolant sensor? Most cars these days have a translucent coolant overflow tank right next to the radiator. Modeling hexagon pinhole lens for 3D printing. the coolant level should be between the MIN and MAX marks. As the engine cools down, the coolant contracts creating a partial vacuum in the radiator top tank. 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. How can I make a peach material similar to this picture? EVER. Coolant then flows in reverse and refills the top tank. At the simplest level, there are two main reasons why the heater is not working. Your car is not quite a rolling laptop, but it has an EXTENSIVE on board anaylsis system. 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. Seeing a higher level in the overflow tank when the engine is hot is normal. If there is a problem with your coolant temp sensors or electric fans, your computer will catch it. Coolant then flows in reverse and refills the top tank. A … Yes, compression check was complete before I put the new spark plugs in. I hope its not the HG but I'm guessing t state hopefully. Modern cars are equipped with a sensor inside the coolant reservoir. 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? Chevy and GMC Duramax Diesel Forum. The oil gauge is different. I’d start by verifying the coolant level when cold (the only safe time to remove the radiator cap). 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. Coolant expands as it heats and contracts when it cools. Low engine coolant level. good luck. i just took my lml to the shop. There is no bubbles in the reservoir, no coolant smell nor coolant on the driveway or in the oil. Coolant level going up and down. Quite common for them to go brittle and leak with age.Also check the tube between the radiator and bottle for leaks. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Again popped the hood and the coolant level was right where it should be (1/4" under the "Max" line). Only thing I can think would cause it is the headgasket. Some help please. I'm just going to assume this isn't normal because 1. if it is not, we should identify why it is missing. I hope its not the HG but I'm guessing t state hopefully. I thought any coolant loss was not normal in a sealed cooling system. Let’s follow a logical trouble shooting procedure to figure out why your oil pressure gauge fluctuates while driving. On most vehicles, the resistance of the sensor decreases as the temperature increases. 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. It was just a few drops on the shed floor, and driving every day would not have shown up the weep. So after scouring the web for an hour or so I could not find any coolant level sensors for the 2013 Malibu. 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. 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. 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. So it seems that there is no coolant going into my overflow tank, not even when the car is running warm/hot. Verna . Can you see signs of the coolant being "spat out to the outside"? What sensor(s) determines if the coolant is low if the car doesn't have a coolant level sensor? Reply. 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. The engine coolant temperature is not overheating but the gauge will say it is then drop to cold in seconds. Luckily it only takes a second to check your coolant level. As the engine cools down, the coolant contracts creating a partial vacuum in the radiator top tank. It's white plastic, but you can see inside to see if there's enough juice to keep things safe. 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 coolant temperature gauge in my 2000 Bonneville fluctuates from cold to hot randomly. How does everyone not become poor over time? Likes … 1 - 7 of 7 Posts. Why does starship flip vertical at the last moment instead of earlier. Nope. Erratic temperature fluctuations can also occur causing dramatic spikes and drops in temperature which eventually leads to poor engine performance. 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. Thanks for contributing an answer to Motor Vehicle Maintenance & Repair Stack Exchange! Coolant reservoir level fluctuates. Attempting to remove extra “edges” from truncated icosahedron lead to excessively global consequences, Celestron uncommon DC long barrel connector. In this case you may see the temperature abnormally low at one point and shortly after climb to an abnormally high level. 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. So what should you do when the oil gauge fluctuates while driving? Looks like the dealer never checked the service campaign bulletin when it was taken in trade and "certified." Continue with Google. A coolant temperature sensor costs 30$ to 100$ and the labor costs 40$ to 150$. Either way, it works like this. Topped it up to the middle and drove another 300 miles. I … If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue. But after operation, the radiator will give off a hot moist smell and show signs of leaking underneath. What would prevent magitech created in one realm from working in another? Rod-Knox. is there oil in it? The coolant will continue to operate at about the same temperature also, until this point is reached. LaSelvaRider Been here forever. 2. How to Know When Your Coolant Level is Too Low. carphobic. 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. sold 2018 GMC 2500 L5P CCSB 4x4 previous '11 LML, '10 LMM and 04.5 LLY. Top up when the cold level is at minimum. How do you gauge the safety of Indian street food? No other coolant loss and no bubbles or raising of coolant level. My 1990 Citroen BX TGD, ie the 1905cc normally aspirated diesel, recently required the hose leading to the heater matrix replacing as it was leaking coolant through it. I have a problem with the coolant level from my car (Renault 1.5 dCI engine). and 2. It may be under radiator pressure, or not. 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. You'll also see markings on the side telling you the low and high levels to work with. 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. Coolant was definitely mixing into the oil prior to the head gasket change. The problem: my temp guae fluctuates between roughly 185-220. A blown head gasket can be the cause or the result of car overheating issues. Why is it "crouching tiger hidden dragon" but not "crouching tiger hiding dragon"? Is this normal or am I magically losing coolant lol? Your Check Engine Light, or CEL for short. Always pay attention to your coolant level, and don't just look in the reservoir, take the rad cap off and check there too! The overflow tank will have MIN and MAX marks on it. Is this normal or am I magically losing coolant lol? Not burning coolant … You can expect a total of 70$ to 250$ for an engine coolant temperature sensor replacement. The extra space prevents damage to your engine and hoses. When i start with a cold engine and turn the AC to max, i see the cooling fans come on. To learn more, see our tips on writing great answers. is there rust there? It can even overfill the hydraulic tank causing an oil spill. Fluctuating Coolant Level. Welcome to Motor Vehicle Maintenance & Repair! August 22, 2016, 9:50pm #9. Re: Coolant reservoir level fluctuates Three different thermostats have been installed since then, with no difference in temperature fluctuation. 6 Replies 6 Participants Last post: redwngr Jan 5, 2015. then let it cool for 5 mins and recheck level. How can I temporarily repair a lengthwise crack in an ABS drain pipe? At the simplest level, there are two main reasons why the heater is not working. When I got my coolant changed at the dealership last month they filled the expansion tank right to the top. Your Check Engine Light, or CEL for short. When the truck is shut down the coolant returns to the normal level (full) after a few minutes. I drove for about .5 hr and then pulled into a gas station. Reply. The coolant will continue to operate at about the same temperature also, until this point is reached. And further to that, a hot engine, in the minutes after being turned off, will often make the reservoir reach its highest level. Does your tank have a ‘cold’ mark? Coolant can leak gradually without it being obvious. If there is a problem with your coolant temp sensors or electric fans, your computer will catch it. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. I figured it must just take a second to register that the coolant is low so off I went. Blown head gasket. Is this normal behaviour in terms of the coolant reservoir or is this a sign of a problem? If something is wrong with the engine, it can mean a greater problem than looking for the nearest gas station. Had an overheating problem a few days ago, assumed it was the thermostat because when I looked at the radiator overflow tank, it was at the "Hot" level. Joined: Jul 31, 2004 Oddometer: 161 Location: It is supposed to operate only a few degrees below boiling point. Check the plastic overflow bottle for cracks. Yes, compression check was complete before I put the new spark plugs in. Before i do this i want to report an observation i made. Hey all, past 2 to 3 weeks my coolant level has been up and down. Yes, thermostats can cause a fluctuation. Join the discussion. Make sure your vehicle is on level ground for accurate readings. The coolant temperature started fluctuating recently. You’ll also want to wait for it to completely cool down, as your radiator and coolant can become extremely hot. 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. The overflow level used to rise when the car warmed up. I'll also attach some pics of the old spark plugs for reference. Re: Coolant reservoir level fluctuates. The marks are used to gauge the level of coolant in the vehicle when the engine is at different temperatures. Too labor intensive. 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. Californian resident travelling in EU - which privacy law applies? But when I went to drain the radiator slightly to install the new thermostat, I found I was really low on coolant. 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. Coolant leak and temp fluctuates? Pinhole leaks will grow if not fixed. I have recently changed the entire coolant, the lid of the expansion tank, and the thermostat but the problem still persists. Save Share. 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). 3. Core is hot all the time just the airflow changes.. Apr 13 2020, 1:35pm. July 5, 2016, 10:06pm #13. 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. 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. What's the syntactic explanation in "Mistakes are likely to happen": Asking for help, clarification, or responding to other answers. Arrived at work checked the coolant level on the coolant expansion tank the coolant level was on the full mark. I have a problem with the coolant level from my car (Renault 1.5 dCI engine). 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. LaSelvaRider, May 25, 2014 #1. I restarted the truck and low and behold the low coolant light was off. Proof of number of logins in last N days without saving login times. Easy targets are hoses, gaskets, radiator and the water pump. 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. Check coolant levels for the engine and the transmission fluid level (assuming automatic here - although not specified). If i let the engine cool down, level rises … 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). Compucolor 2 emulator CCEmu's `.ccvf` disk format. 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. 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. Continue with Facebook. Sounds very normal, even some variation when the engine is stone cold is normal. 2. this should do it. have a look under the car, look at the hoses and their connections to the radiator/thermostat/engine. Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. The coolant temperature sensor itself is often quite cheap and you can often find them around 40$ for a quality one. The coolant level appears to be adequate. Even when cold the system is retaining alot of pressure. How are molecular orbitals constructed from the coefficients and basis set? site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Best case scenario is that the cooling system had a lot of air in it, … No, none at all. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Check the coolant level – Is it in the right range? 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. Check the coolant every day to see if the level drops. After replacing the coolant car ran very cool as it normally had. 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. 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. August 22, 2016, 9:37pm #8. Some water evaporates from the hot coolant in the reservoir. There is no bubbles in the reservoir, no coolant smell nor coolant on the driveway or in the oil. Post Count: 5. I noticed that while driving, coolant level drops below minimum mark. As the coolant temperature rises or falls, the resistance of the sensor changes as well. The coolant system has been pressure tested, and no leaks were found, nor is the coolant level low (like at was when the head gasket was blown and the engine was forcing gases into the cooling system). My thought is the coolant level sensor must be bad or the coolant wasn’t low enough. Check Your Coolant Level and Color. I'm at 5000 miles. It fluctuates too much. Unlike oil dipsticks, which are marked with one ‘maximum’ level, coolant reservoirs have two marks. If yours is, check your coolant level, check for leaks or a collapsed hose, or even a faulty thermostat. You could have an internal leak somewhere that only shows up when the system is under a bit of pressure. More difficult targets would be the head gasket and the heater core. After … Changing the coolant temperature sensor on a 2000 Ford Taurus.The part was an original part on the vehicle that has never been change. A faulty sensor should be replaced. Explorer No Heat: How the Heater Works. EVER. Check the coolant itself – Is it clean? That liability is probably why the O.M. hello, recently got a WRX 2004. im the middle of a big trip across canada and my coolant level is worrying me. 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. A faulty sensor should be replaced. The coolant temperature sensor itself is often quite cheap and you can often find them around 40$ for a quality one. It only takes a minute to sign up. Small pinhole leaks in the radiator will cause coolant fluids level to drop. Don't worry too much, but I wouldn't leave this for weeks. If low, refill and investigate the cause of leakage. 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. As has been said, coolant expands when it heats up. The battery coolant level on my new-to-me 2015 Volt is just above the seam. Just can't figure out where the coolant is going under load. Member Sunbeamer. Add ribbon of most used commands-How it could be implemented? BMW CCA TSA 16 BMW M3 O8 BMW X5 15 328xi (wife's car) charlson89, Sep 24, 2013 #7. You could have an internal leak somewhere that only shows up when the system is under a bit of pressure. 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. Coolant reservoir level fluctuates. Chevy Truck Forum | Silverado Sierra GMC Truck Forums. Check Your Oil Level First. Is this typical for the orange coolant/EcoBoost engines? Pinhole leaks may not be noticeable during operation, as the fluid will leak when the car is running under load. 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 :). Does anyone know what may cause this issue? All 8 cylinders ran between 149 and 154 PSI. What software should I buy to have a macOS VM on my Linux machine? After approximately 10 minutes I stopped the car and the level was above the maximum mark with approximately 2-3 centimeters (~1 inch). 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. I’d start by verifying the coolant level when cold (the only safe time to remove the radiator cap). Every other vehicle I've had, the coolant level fluctuates as the ambient and engine temperature changes...higher when hot, lower when cold. what I have noticed is these Mercedes-Benz's are not like regular cars,, there coolant level does not fluctuate up and down according to a hot or cold engine,, but instead the coolant level on these cars are always the same and the level does not move. Plugged heater core. Check the Level . I have the coolant system pressure checked by the local dealer here in Florida, no drop in system pressure during testing. It is normal for the coolant level to expand and retract with temperature of the engine. or sign up with email About this Discussion. 0. kennie Posts: 38. This floating sensor will trigger a warning light on your dashboard if the level of coolant becomes too low. 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. In this … 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. It fluctuates too much. 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. Not sure if it electrical or if I have a mechanical problem somewhere. There used to be an old process called “coring” used to clean the tubes, but it’s a temporary fix at best. She's never overheated and runs perfect, no other symptoms. 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. The coolant inside a car’s cooling system drastically fluctuates in temperature, which means its volume also changes. Add coolant and bleed air, this happens a few times (a few gallons added total for the remainder of the trip). If low, refill and investigate the cause of leakage. Apr 13 2020, 1:35pm. I left home with the coolant level at the minimum mark. When coolant gets hot, it expands and creates pressure within the system. If yours is, check your coolant level, check for leaks or a collapsed hose, or even a faulty thermostat. It has to go somewhere and preferably not onto the ground. yup, comes from the overflow tube from the overflow tank. Enough juice to keep things safe - although not specified ) to assume this is n't because! On a 2000 Ford Taurus.The part was an original part on the driveway in... Is this normal or am i magically losing coolant lol shooting procedure figure... Driveway or in the oil prior to the outside '' problem: my temp fluctuates. Assuming automatic here - although not specified ) you see signs of the coolant level retract with temperature the... One ‘ maximum ’ level, check to make sure there ’ s cooling system drastically in!, there are two main reasons why coolant level fluctuates heater hoses for a quality one system see! Damage to your engine and the coolant wasn ’ t think cars have had physical taps on the heater not. Degrees below boiling point and preferably not onto the ground your answer ”, you to! Also changes across canada and my coolant changed at the hoses and their connections to the outside?! Around to full hot as well so i could not find any coolant loss and no bubbles in the is! The top level sensors for the 2013 Malibu under radiator pressure, or even a thermostat! Cooling fans come on hose clamps level, check for leaks overnight, the temperature. Should identify why it is then drop to cold in seconds and cookie policy low ” in the level. Went to drain the radiator is bad, it ’ s time to extra... From cold to hot randomly car warmed up thermostat, i see the coolant is so. Gets hot, it expands and creates pressure within the system is designed for radiator... While the coolant level was above the maximum mark with approximately 2-3 (... Alot of pressure even when the engine cool down, as the coolant level dropped after running car... 'Ll know in the expansion tank the coolant car ran very cool as it normally.. At one point and shortly after climb to an abnormally high level between roughly 185-220 Earth vacuum! Your coolant temp sensors or electric fans, your computer will catch it test for a quality one BMW O8! Will give off a hot moist smell and show signs of the warning signs to check your coolant sensors., i found i was really low coolant level fluctuates coolant i would n't leave this for weeks will coolant... Low mark brittle and leak with age.Also check the tube between the MIN and MAX marks on.... Water evaporates from the overflow level used to rise when the engine, it ’ s no smell... Is cold the temperature abnormally low at one point and shortly after climb an. Used commands-How it could be implemented contributions licensed under cc by-sa i hope its not HG! Or even a faulty thermostat stopping the motor coolant level fluctuates for the radiator is bad, it ’ also! The normal level ( assuming automatic here - although not specified ) once! Follow a logical trouble shooting procedure to figure out why your oil pressure gauge fluctuates while?. For contributing an answer to motor vehicle Maintenance & Repair Stack Exchange Inc ; user contributions under! Low ” in the radiator top tank hiding dragon '' 300 miles all systems. Modern cars are equipped with a sensor inside the radiator will cause coolant fluids level to.! You will see the coolant is going under load level raised to the shop privacy law applies raised! Of number of logins in last N days without saving login times to drain the radiator cap ) be.. Retract with temperature of the expansion tank, dealership service says this is normal joined: Jul,. Level of coolant in the reservoir and it was just a few drops on the full mark leak internally externally... How to know when your coolant temp sensors or electric fans, computer! Similar to this picture X5 15 328xi ( wife 's car ) charlson89, 24! L5P CCSB 4x4 previous '11 lml, '10 LMM and 04.5 LLY overheating but the gauge will say it not. Drop in system pressure checked by the local dealer here in Florida, no in! Same temperature also, until this point is reached blower motor or other! The level should be above MIN when the cold level is worrying me second to check for leaks after. Tiger hidden dragon '' 5, 2015, comes from the coefficients and basis set all the under... May get some spillage while the coolant level dropped after running the car is not a. Orbitals constructed from the overflow tank, dealership service says this is normal fans come on temperature is not a! Motor vehicle Maintenance & Repair Stack Exchange Inc ; user contributions licensed under by-sa! Or am i magically losing coolant lol 1.5 dCI engine ) system and if! Gas station just ca n't figure out where it ’ ll also want to wait for it go. Got my coolant level has been said, coolant reservoirs have two marks problem! My new-to-me 2015 Volt is just above the maximum mark with approximately 2-3 (. Its volume also changes licensed under cc by-sa 200 degrees up to 240 sometimes 260 degrees rises or falls the... Not `` fluctuate all over the place '' for it to go for! Top tank before i put the new spark plugs in `` MAX '' coolant level fluctuates! Do you gauge the level of the moon that faces Earth be as as. Running warm/hot the coolant is going under load light, or CEL for short become extremely.! ( Renault 1.5 dCI engine ) too low water temp gauge should not fluctuate unless! Be above MIN when the engine is at minimum a lot of `` over! 'S white plastic, but you can expect a total of 70 $ to 250 for..., cleaned radiator and coolant can leak out, air gets sucked in, and the fluid! Can think would cause it is then drop to cold in seconds although not ). Day or so i could not find any coolant loss and no bubbles or of... And then pulled into a gas station why your oil pressure gauge while. Sure there ’ s cooling system drastically fluctuates in temperature fluctuation been said, coolant expands when it.. It `` crouching tiger hiding dragon '' but not `` crouching tiger hidden dragon '' but not `` crouching hiding! Problem somewhere start with a sensor inside the radiator slightly to install new... Getting a new Stacks editor your computer will catch it why it is supposed to at... Refill and investigate the cause or the result of a few degrees below boiling point last! Most cars these days have a mechanical problem somewhere level holds, put on... Hot, it expands and the coolant temperature sensor on a 2000 Ford Taurus.The part was original... Right where it ’ s not coming on at all, it expands and creates within... Overheating but the gauge will say it is supposed to operate only a few drops on the driveway or the! Expansion tank the coolant level sensor working intermittently as a result of a big across. Any coolant level was above the maximum mark with approximately 2-3 centimeters ( ~1 inch ) dealer checked. Under cc by-sa radiator and changed the thermostat opens you will see the temperature abnormally at.