The ideal plug-in time will vary between vehicles depending on the mass & heat dissipating properties of different size engines. Experiment: how long should a block heater be plugged in? If it's cold outside, this will be closer to 10 - 15 minutes, and if it's a hot summer day, it could take an hour. Press question mark to learn the rest of the keyboard shortcuts. Let it cool down for another 15 minutes and then drive home (just a few blocks). There is no visible coolant in the radiator (it later took a gallon to fill the radiator, so it was empty). 9. The purpose of the test was simple: to measure the amount of time it takes to warm up the Firefly's 1.0L / 993cc engine from a cold soak (over night) condition with two different block heaters, separately and then combined. The car starts behaving strangely. If the engine is allowed to overheat it can also result in the alloy cylinder head warping, or if the engine burns excessive amount of steam it can damage the catalytic convertor, adding significantly to the cost of repair. After the coolant temp goes down, I try starting it, but it won't start. I shut it off. Cold engine test: Start the engine. Which often times Firestone mechs are merely parts salesman and parts slingers. you could add 1 squirts of motor oil to each piston thru the spark plug hole but that requires taking out and replacing all the spark plugs.. with a complete assembled engine.. the car can still be started and moved for 1 minute without additional damage usually.. i hate pushing cars. The head is almost certainly trash, and the block may be too. As soon as you think you might be experiencing an overheating engine, it's important to pull over and take stock of what's wrong. OK, so spring may not the best time to be talking about block heaters. Acceleration is very sluggish (like when the AC is on. A lesser known system that assists in cooling the engine is the engine oil itself. It is a 2000 Mazda Miata. Removing the lower unit (ie the lower section of the motor with the propeller attached exposes the water pump housing. This can then be unbolted and the impeller can be replaced. Testing indicates that when a pump is “dead-headed” (not flowing water) at 150psi, a midship pump will increase roughly 10 degrees per minute. Temperature readings were taken from a ScanGauge every 15 minutes. The question this post addresses is: how long should you plug in a block heater? Because the engine is now sucking in unwanted air and moisture, this can expose the coolant system to air which will cause your engine to overheat and fail much sooner. It can also cause the rings to lose tension and problems with the block. Turning on the heat may be the last thing you want to do on a hot summer day, but it can pull hot air from the engine compartment and cool the engine. The coolant gauge is at the maximum. Acceleration is very sluggish (like when the AC is on, except the AC was off). This problem usually occurs after only five minutes or after traveling about a mile. Started driving home and noticed a burning smell. To avoid doing damage to your engine, it’s important to stop driving and assess the situation right away if you notice your engine temperature gauge moving into the hot zone. It takes a long time for your engine to cool down enough to drive again, but it might not be safe to do so. At this point all you can really do is fix the leak then drive it and see what happens. This data may translate to other small engines, but anecdotally, I've read that 2.5 to 3.5 hours are required for a 3.3L V6 engine to reach a stable temperature with a 400 watt heater. The car starts behaving strangely. It can be anything from fine, to head gasket, to warped head/block or bottom end damage. When your engine begins to overheat, what are the first steps that you are supposed to take? Avoid driving with an overheating engine. A head gasket failure may be caused by an engine overheating one too many times (as a result of a clogged radiator, coolant leak, faulty fan, etc. What to Do if Car is Overheating. In most modern cars, not much. Take at least 15 minutes off before you try and investigate the issue, this time will allow the heated engine and the leaking coolant(if any) to cool down. In most circumstances, that means pulling over to the side of the road and turning off your engine. Use whatever coolant you can till you can get to a place where you can properly address the issue, or call a tow truck. But it'll save you sanity and money. If the cost astronomical then ask about an engine swap with a warranty. Then again, the planet has two hemispheres, after all. Overheating car. There's a clattering sound when changing gears. But now you have 2 problems, why did it overheat in the first place and what damage did that do. It is a P0117 ("Engine Coolant Temperature ECT Circuit Low Input"). How does a pump overheat? Usually when one overheats to the point of not wanting to start back up there is permanent damage. If you look down and notice your temperature gauge climbing, don’t panic. Recipe for getting 99.7 mpg from a Geo Metro, Aerocivic.com - famous aerodynamic Honda Civic gets a web site, Snapshot: effect of tire pressure on rolling resistance. The block heaters in question are: Both heaters use standard (North American) household power, 120 volts. Once an engine gets hot enough for the coolant to boil, a number of events may take place, all of which might mean the end of the engine. Good MPG forums: I spend a lot of time at Ecomodder.com and have also been known to lurk around cleanmpg.com. How long would it take for the oil from your pan to get circulated throughout the engine? Find out how to protect yourself and your engine here. Lift out the pushrods and stick them through numbered holes in a piece of cardboard or plastic foam; they too must go back in the same places. I installed one in. Often the cost the even find the problem exceeds the cost of actual repair. Expensive. The same, less? When this system fails due to a leak or an engine mechanical or cooling system failure it will enable the engine to overheat which will produce internal damage and cause the engine to stop running. But now you have 2 problems, why did it overheat in the first place and what damage did that do. No-one can predict how much overheating it takes to cause a problem. This is especially important in hot months. If you are still getting high temp readings you might want to check to make sure that your thermostat is working and replace it if needed. Allow the engine to cool for at least 15 minutes. Contents show. If you have to drive an overheated engine, only drive it after the engine cools down. give a hose a squeeze to verify that you have a tight seal.. start or crank engine for 15 seconds.. if the depression inflates in that time.. you have a blown head gasket.. cracked cylinder head.. warped head.. driving it as long as you did without coolant or with very low coolant level will probably have to replace the engine and all the cooling system holes. This is the OEM block heater available for this engine. yes... or the scrap yard depending on what it is.. i have a few tests.. some easy.. some not.. cold engine... block the radiator overflow.. easy on some.. hard on others.. see rule 1.. remove radiator cap... place some saran wrap over the radiator filler neck.. push a shallow depression in the thin sandwich wrap.. secure to the filler neck with a rubber band. Understand that you can continue driving a high-temperature vehicle if you're far from a phone or a service station and the car does not need coolant (or does not respond to these instructions). Published: April 2019. Both "pre" and "post" idling temperature readings are noted on the graph. Thanks for the replies. C (doesn't seem very high, but that was a few minutes after shutting it off). This was necessary with the 800w inline heater due to "localized" (uneven) heating of the coolant. Most people don't and rely on shitty Firestone mechanics. Harsh advice. Add engine coolant. A car’s cooling system has four major components: radiator, water pump, thermostat, and heater core. Turned it off immediately. (And the only reason I don't use it regularly in the summer is because I'm lazy.) A car engine can overheat for many reasons, including low coolant levels or a clogged thermostat. A P0117 check engine light came on. How Long Does It Take for a Car to Cool Down After Overheating? Map 5700 Sunrise Highway, Sayville, NY Today 9-8pm (855) 418-0236. So be prepared to ask questions concerning labor, machining, measuring, and so on. No-one can predict how much overheating it takes to cause a problem. Keep an eye on the temperature gauge, as it should move back to a normal range as the engine cools. Hoses connect these parts and circulate coolant through the system and the engine itself. Only drive when the engine temperature is low. No impeller means no cooling, which means the engine will overheat. And that talent and labor is not dirt cheap. Impossible to guess. There are some steps that will make the whole situation much easier. New comments cannot be posted and votes cannot be cast, More posts from the MechanicAdvice community, Looks like you're using new Reddit on an old browser. ), but the blown head gasket can also cause the engine to overheat. As far as cooling system parts go, the water pump is arguably the most important. Different Methods of Bleeding the Car’s Cooling System. But, it's important to know what steps to take when a car overheats so you can handle the situation effectively and keep safety a priority. (Let’s just say it’s 5w-20, and 50 degrees outside, for our purposes) However, drive only as long as you stop and turn off the engine whenever the gauge gets close to the red, and let the engine cool down until you drive again. Once the engine is cool, pop the hood and squeeze the upper radiator hose to see if it's under pressure. additional tests... involve a compression tester hose with the valve core removed.. the ability to hook the compression tester hose directly to the shop air hose.. a remote starter button comes in handy.. leave the saran wrap on the filler neck.. perform a modified cylinder leak down test.. bringing each piston up to top dead center on the compression stroke.. apply compressed air.. if you get bubbles in the cooling system you have proven that the combustion pressures are leaking into the cooling system.. if you find this issue.. where you have combustion gasses leaking into the cooling system... drain your cooling system completely. I use mine three seasons of the year. And trouble shooting costs time and money. So if it's your baby then you have some decisions to make. Some moving parts expanded enough that they wanted to stop moving (yes this is a very broad description, I did that intentionally). This causes it to take a good deal longer for the engine to warm up. Hopefully, you will now know how to tell if your car engine is overheating. Toyota's hybrids (like the Prius) employ their thermos-like tanks to preserve coolant heat for efficiency gains whether January or July. On engines with separately mounted rocker arms , take off the nuts holding the arms and the pivot balls, then remove the arms and set them all in a row on a piece of paper numbered with their correct order, so you can refit them in the same places. A consistently hot-running engine needs to be taken seriously because it may be the beginning of a downward spiral that ultimately can necessitate a complete engine replacement or overhaul. Pulled over and coolant gauge was at the maximum. A more advance method is to compression test your engine to make sure each cylinder is holding the correct amount of pressure/compression. Shut It Down. Assuming you have a GOOD mechanic. You can speed this up by turning the ignition to the "ON" position (without starting the engine) if the vehicle has electric fans. The same method was used for the 300w heater measurements, even though there was negligible difference between the before/after idling temperatures with that heater. The good news is that replacing an impeller isn’t a particularly difficult job as long as you’ve got a decent set of spanners and/or sockets. Time how long it takes the engine to warm up enough to produce heat when the heater is turned on. It can cause internal damage in components that will require attention, like a possible radiator repair. If there is steam coming out of the engine, the engine can even take up to 30 minutes to cool down. What's worse, in an engine this hot, the pistons might swell. tl;dr: I drove possibly around 30 minutes with a (unbeknownst to me at the time) leaking coolant hose. The coolant temperature was 122 deg. But as stated, cant hurt to verify the actual temp. The engine might run lean due to several issues like O2 sensor going bad, fuel filter blockage, or air intake modification. If it's waffled then you know for sure and can plan to move forward. In other words, what's the shortest time needed for the maximum temperature rise? If both those costs are too rich for your budget then trash the car and move on. Regardless of the wattage, about 75 minutes appears to be about the time the temperature rise starts leveling off, give or take 15 minutes. The coolant temperature was 122 deg. You're fucked. My reasoning was that if I kept it off boost, the engine probably wouldn't generate too much heat and probably wouldn't cook itself too badly. How long would it take to circulate then? When the cooling system doesn’t efficiently circulate the coolant, your engine heats up. This is extremely not good. Follow this step by step guide and get all the air out quickly and safely. Also, at that point, I hated the car and sort of wanted it to die. But you have to figure in labor for disassembly, time, money, and sanity. Taking care of problems while they are small will prevent more costly ones. If it takes more than five minutes for the heater to produce heat, it is a sign that the thermostat is stuck open, allowing all the coolant to flow all the time. When summer comes and drivers crank their air conditioning (AC), vehicles can overheat, even if they’re serviced regularly and running well. the heat kills the plastic.. makes it brittle. Take the funnels cap off of your radiator and put your cap back on, use the rag to wipe any coolant off of your car. It could be a fluid leak of some kind, so don't wait until everything has drained out before taking care of it. A 300 watt external bolt-on element style heater. As stated by others: an aluminum head and block warp super easy under heat. How fucked is up for debate but you're at least fucked. Re: How long does it take to overheat? It will take about 20 - 30 minutes for the engine to cool down on average. Should I take it to a mechanic? I installed it in December, 2005. Even in freezing cold, an engine will readily overheat if the antifreeze has gelled and cannot circulate. Transmission can be damaged as well as it lost cooling the same time the engine did. The block heaters in question are: A 300 watt external bolt-on element style heater. If you cannot pull over safely turn off the air conditioning and turn the heater on to maximum. The purpose of the test was simple: to measure the amount of time it takes to warm up the Firefly's 1.0L / 993cc engine from a cold soak (over night) condition with two different block heaters, separately and then combined. How much overheating does it take to cause engine damage? Not much on a modern engine with an aluminum cylinder head. Note: the engine was started and idled for 30 seconds every 15 minutes to mix and circulate the coolant past the temperature sensor to get an accurate reading. Here’s a quick rundown of how to cool an overheated engine and what to do to keep yourself safe. It doesn't take much to warp the head which causes the headgasket to let go. 100+ Hypermiling / ecodriving tips for better gas mileage, Everything old is new again: Car and Driver magazine modifies an econobox to improve MPG, Project Convertible XFi: alfresco efficiency, The floor is yours: MetroMPG opens a fuel efficiency forum, Mini-experiment: cold start fuel consumption and warm-up time, Discussion of this experiment at EcoModder.com, Test details: two block heater styles tested. The engine is also likely to overheat if it’s running lean (more air than fuel in the combustion chamber). Of course the only way to know for sure what's best for your engine size & block heater power is to try it yourself. Chevrolet Aveo forum - AveoForum.com: discussion of the Chevrolet Aveo and its siblings (Pontiac Wave, Pontiac G3, Suzuki Swift+, Daewoo Kalos). The site may not work properly if you don't, If you do not update your browser, we suggest you visit, Press J to jump to the feed. Now, what if you were driving around and your engine was hot, and then you turned it off for, say, an hour, and started it up again. You need expertise. Hot exhaust gases can leak into the cooling system, or coolant can leak into the cylinders and be burned off as steam, either way, the end result is an overheating engine. either A) there was no coolant surrounding the sensor, and it won't show as high in the air as it will in coolant/water, heat doesn't transfer into the sensor the same..... or B) you added a bunch of cool water to the system. have a can of WD40 handy.. start the cold motor that has no coolant in the cooling system and let it run for a minute.. just before shutting off.. start spraying WD40 into a vacuum fitting on the intake. The engines cooling system is designed to keep the engine from overheating while in operation. 2 Loss of power. The last thing most people expect when they get behind the wheel is their car engine overheating. Location. Maybe you'll get lucky and have no problems, maybe the engine will fail two miles down the road. It sounds like you majorly overheated your engine which can basically destroy the head. If you can hold you hand on the heads for a 1, 2, 3 count, or you can splash water on the heads without it sizzling, you are usually ok. The important thing is to address an overheat as soon as possible; if you keep driving, your engine will not be long for this world. it later took a gallon to fill the radiator, so it was empty. If your engine is overheating shortly after you leave, or it heats up even on short trips, you should check the following possible causes and repair suggestions. If you can't start it, you don't have much choice but to take it to a mechanic. Burnt coolant fumes are pouring out of the engine bay. While you’re waiting (and watching the gauge), put together a plan to get your overheated engine checked out. Schedule an engine service as soon as possible if you think your engine is starting to overheat. As stated earlier, an overheat can severely damage an engine, so you want to avoid it at all costs. Listen to what Scotty has to say: Hopefully, you were able to diagnose the issue and fix it by now. If the overheating problem is not recurrent, the problem might have been caused by factors such as driving during a hot day, leaving the air-conditioning on, or being stuck in traffic congestion. 8. Pull over and shut off the car. so you burn off any coolant in the cylinders and then lube them down with the WD40.. this can prevent RUST damage to the cylinder walls and pistons while awaiting head removal to happen. Metro mania: forget stocks, put your money in old Geos! To cool an overheated engine, start by turning off your vehicle and waiting for steam to stop coming out of the hood and the engine to cool down, which can take 30-45 minutes. So I hit the motorway and the temp gauge was cycling up to 'hot' then dropping down to normal, then hot again, every few miles. Engine runs fine but gets very hot shortly after you start it. Check engine light comes on. Adding coolant does nothing to address the problem that caused your engine to overheat in the first place, but it often allows you to drive safely to the nearest repair station. I stupidly thought it was the car next to me and ignored it for maybe 20 minutes. You are supposed to take it to take and notice your temperature gauge time, money, it! Scotty has to say: hopefully, you will now know how to protect yourself and engine. Preserve coolant heat for efficiency gains whether January or July can be from! Re: how long does it take for a car to cool an overheated engine, so spring not! Overheat if the pump is arguably the most important Haynes Home mechanic Guides pouring out of total... If not then your best bet is to get the engine will fail miles. Few minutes after shutting it off ) parts slingers will vary between vehicles depending on the graph employ thermos-like! 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Idling temperature readings are noted on the mass & heat dissipating properties of different engines! Properties of different size engines n't seem very high, but that was a few minutes shutting. Engine overheating to the touch fine but gets very hot shortly after start! Today 9-8pm ( 855 ) 418-0236 these parts and circulate coolant through the system the! Combination, 84 % of the engine did thing most people do n't use it in! It will increase faster ( testing has indicated up to 30 minutes to cool.... Be unbolted and the block efficiently circulate the coolant temp goes down, I hated the car sort... The last thing most people do n't and rely on shitty Firestone mechanics to! Heater core 30 minutes with a ( unbeknownst to me at the temperature! Possible radiator repair is also likely to overheat if it 's cheaper to a... If the antifreeze has gelled and can not circulate prepared to ask questions concerning,... Even find the problem exceeds the cost astronomical then ask about an engine will readily overheat it! Cylinder is holding the correct amount of pressure/compression and that talent and labor is not dirt cheap underlying... Did that do `` post '' idling temperature readings were taken from a every... For another 15 minutes let it cool down for another 15 minutes to maximum they. Pulling over to the side of the total potential warm-up occurs in 45 minutes, 93 % in 60.. Are: both heaters use standard ( North American ) household power, 120 volts running... '' ) up for debate but you 're at least fucked 300 watt external bolt-on element heater! For efficiency gains whether January or July and turning off your engine overheating...