Why Is My Car Overheating With A New Thermostat

Often this code causes the Check Engine light to come on and off in cold temperatures. Linking: Please reference this car repair article when quoting, linking to this page is welcomed and appreciated. When a vehicle is overheating and you have new components in the cooling system, it's time to start pointing your finger somewhere else. Opened the hood and the coolant in the reservoir was boiling. I also found a 180F thermostat at an autoparts store while traveling. It is possible that the thermostat fixed it, but still have an air pocket in there. Your car’s engine coolant is the fluid that regulates the temperature of the engine and saves it from overheating. If your engine is overheating, it may be time to take a look at the air filter and try to recall when you last had it replaced. So far Ive replaced the radiator cap and thermostat - neither of which seemed to help. It's rare with modern vehicles, but even a well-tuned automobile can overheat. This thread is just starting to run in circles now and we are just revisiting the same items over again so I believe it has run it's course and I am going to lock it now. Overheating can be a car-killer and should never be taken lightly. 5 years ago), busted PCM (~7 months ago), bad thermostat (~2 years ago), coolant temperature sensor (~2 years ago). This regular maintenance of your vehicle's radiator and cooling system can help avoid car overheating and costly repair services. A car thermostat is a small device that sits between the radiator and the engine of a liquid-cooled car. If you get a leak in your radiator, water pump, hoses, head gasket or thermostat housing, your engine isn’t going to be able to cool properly. Ironically yesterday my wife and a reader had the same question on the exact same day prompting this really quick post about your ecobee3 and the temperature that it displays. Had to completely replace the new head, all the. Unfortunately, the first sign that anything is wrong is when the engine temperature needle shoots up into the red, or you get an overheating symbol flashing up on the dashboard. Your car's automotive thermostat is the part that fails most often, so it's the first place you should start if anything's amiss. Your car engine produces lots of heat, and keeping that heat in check is the critical job of the cooling system. Often this code causes the Check Engine light to come on and off in cold temperatures. Please let me know, I dont know why BMW would put it there if it wasnt supposed to. Change thermostat for a 160 degrees thermostat,, also make sure coolant is proper amount, water will not cool and engine,,, if all that doesnt do it then your radiatir has to be blocked,, Glenn Z I am going to assume with my answer that the car overheated because of the low coolant level due to the water pump leak and low coolant level. I boiled my thermostat and it opens just fine. About a month ago, my car started to overheat. Car Overheating What To Do? Why Do Cars Overheat? Schedule Overheating Car Repair. If your radiator, belts, and hoses are in good repair and the car still overheats, replace the thermostat. Yesanother overheating thread. Re: 55 chevy with small block 350 overheating troubles 07-02-04 12:08 AM - Post# 473634 In response to shad9876 The cheap temp gauges are fine, but I normally test them on the stove to make sure they register correctly at boiling. It is overheating after I've changed the thermostat, there are no cracks in the cylinder block and radiator, brand new gaskets. If the top radiator hose is hot and the bottom hose is cold when the engine is overheating, you might have a radiator restriction, an air pocket in the system or the electric cooling fan is not coming on. and it only overheats when i've been driving for 30 minutes or so. It regulates the amount of coolant that circulates in your engine system. However, there are a few other possible causes why your oven is overheating. Why does my Car Overheat Randomly, with No Pattern or Reason? This kind of situation is really cut down to two things: air in the coolant system or a thermostat with a sense of humor. Cars, new and old, overheat for a variety of reasons. 6 Most Common Reasons Your Car Overheats With summer on its way, temperatures are rising - and the risk of your car overheating is on an upward trend as well. Make sure the machine is turned off at the mains before doing this. But the love doesn't stop. I only had two days this summer that the old XJ ran too hot and I had to turn off the A/C in stop and go traffic. Why? When you allow coolant to race through your radiator it will not have the necessary time in the radiator to release the proper amount of heat. Not trying to take over this thread but how do you tell if your motor is over heating if you dont have a temp gauge? Mercury Overheating problem - Page 2 Login:. Why would you NOT change that if it's overheating? (you can troubleshoot that, but sometimes it's easier to just replace an old one). It still overheats. If your water pump is leaking, and the car is overheating, you have issues. This overheating is also causing an excessively high pressure in your cooling system which would cause your heater core to leak which is why you get coolant on the. Overheating. This article breaks the process down into a series of simple troubleshooting steps. During hot and cool driving the thermostat will open and close as you drive to regulate the engine coolant temperature. Whether your car is brand new or has been around the block, mechanical problems will arise. After it gets up to temp, it switches to the closed loop tables for better economy. Top 5 Reasons Why Your Car Overheats reasons for a car overheating is a stuck thermostat. They will have to drop my catch can from the front of the engine to allow for tilting the fan assembly back so as to be able to lift it out. If the thermostat can't signal to the car that the engine is warm, the coolant won't be sent over to provide heat to your heater core and the air will stay cool. and lower radiator hose staying cold. You want to make. Car Overheating And No Heat heater core with external heater hoses I would like a little information on why my car engine is over heating and when it does I noticed there is no heat coming from the heater ducts as well. I have three thermostats all different brands, two new one used. Overheating is one of the most common causes of compressor failure and a frequent reason for emergency air conditioner repair service calls. The potential causes of a car overheating at highway speeds are a stuck thermostat, a restricted radiator, or a kinked hose. But this is a good place for your to start, especially if all other things considered your car is running fine, not smoking or have junk (like oil) in your coolant and so forth. " It could be something as simple as a faulty sending unit or thermostat. Check out which bad thermostat in car symptoms is best. If you are in this sort of a bind and simply have to drive without a thermostat, it can be done. Bad Thermostat Even under the best of circumstances, a thermostat valve provides a restriction to coolant flow through the system, and pressure holds it closed. My car overheated, we found that the thermostat and thermostat housing needed to be replaced, I found someone to do this, they put in new thermostat and housing. Flush it out and fit a new thermostat. If you or your kids accidentally set it to warm, the unit will start blowing warm air to maintain the temperature instead of cool air. The dealership fixed it for free, but should I be worried this is a sign of a larger problem? It's a Subaru Forester. a stuck thermostat will not make the car heat overheat quickly. At the first sign of overheating, shut off your air conditioner and open your windows: Doing so decreases the load on the engine and helps it cool off. Your thermostat is another great indicator that engine conditions are getting a little too hot. If it does, you have some other problem. If your Honda Accord is overheating, the cause could be any of the vital elements of the cooling system. Check the engine timing. An engine without a thermostat will flow too much coolant and can erode the radiator and heater core. A non-working thermostat should be replaced with the exact temperature replacement specified for the vehicle. This regular maintenance of your vehicle's radiator and cooling system can help avoid car overheating and costly repair services. While most of the new range automobiles do have that features but not all has the benefit. If your car has no heat, not only would the inside of your car feel like an ice box, but a broken heater can prevent your defroster from blowing warm air to your windshield to eliminate ice and fog, which can pose a hazard while driving. This article applies to the Audi A4 B7 (Pre-2008). Let’s take a look at 10 of the most common reasons for the problem. 0L has two options for which way the rotation of the water pump is, make sure it was the same as the one you removed. Hoses are especially prone to failure. If it's empty or low, fill it to the correct level and see if that fixes the problem. Follow these simple diagnostic & troubleshooting steps. Then it turned out that it was the heater core. My Chevy Malibu is in a very odd condition. This can be your car’s quick route to the junkyard--if you don’t. Your temperature gauge shows what your engine temperature is really doing. You can't second guess it when the truck finally shuts off. If your diesel engine is showing signs of overheating, don't panic until you do some detective work. Hyundai i10 Car overheating problems can be costly. The major players are the radiator, water pump, thermostat, fan, and hoses. check the following items, thermostat, thermostat housing, radiator. When I stop I can hear the water in the radiator bubbling over. I immediately pulled over, poped the hood, and coolant was fine. Just like humans, sometimes an overheated truck needs to cool down and have some water. I have new radiator stock 2 core, 160 thermo, and a new water pump. If your car is overheating while driving at highway speeds, you've got a different kind of overheating problem. 200-210F isn't something to get worried about. bad thermostat in car symptoms We compared 10 top of the line bad thermostat in car symptoms over the latter 2 years. Fan, Pump, Hose, and Thermostat Failures A faulty radiator or radiator fan can cause engine overheating if proper cooling is not occurring. I thought the thermostat was stuck so I replaced it yesterday. Ask Question Asked 2 years, 3 months ago. Along with keeping your car from freezing in the winter, and your truck from overheating in the summer, your coolant acts as a lubricant for every moving part it touches, including the water pump, which pushes fluid through the engine, cylinder head and radiator. Luckily, it's also the least expensive part of the cooling system. You'll need to bleed the air out to fix the problem. a stuck thermostat will not make the car heat overheat quickly. When dealing with car overheating, your safety comes first. Incoming search terms: Car Overheats After 30 Minutes,Changed Thermostat And Water Pump Still Overheating,If I Replace My Waterpump And Thermostat Why Is My Car Still Overheating,New Thermostat In 1997 Mustang Still Runs Hot With Ac On,Replaced Water Pump And Timing Belt Car Engine Still Overheats. I cannot see it being terminal,nor should it take more than a week to sort. assuming everything in the cooling system is working, you are looking at an airflow issue. If your car’s engine has ever overheated, you know just how problematic this can be to your car. Linking: Please reference this car repair article when quoting, linking to this page is welcomed and appreciated. Read on as you discover different reasons an LS1 might overheat. Imagine you are driving on a hot summer day but suddenly your car starts overheating and you can't use the AC. Often this code causes the Check Engine light to come on and off in cold temperatures. To replace this element, you will have to buy a new cycling thermostat and place it back where you found the old one. This failure may cause the engine to overheat. Overheating. Just turn it off for a few hours and use it again once it cools down. Although it won't help your comfort level, this step could possibly save the engine. Get shopping advice from experts, friends and the community! Honda Civic LX '94 - The coolant reservoir is full, the radiator appears to have run out of coolant, and the temperature gauge's needle moving closer to the red section is suggesting that the car is overheating (or close to it). BMW Overheating Running Hot. safety standard, Apple has programmed its iOS devices to prompt users with a temperature warning screen when it exceeds a certain temperature threshold. It sounds like your thermostat is sticking shut first thing in the morning causing your car to overheat before the thermostat opens and allows coolant flow to your radiator. My car keeps overheating. This is a critical component that, when faulty, must be repaired immediately. This will encourage water and air flow through the radiator, helping to cool it. Here's What You Do If Your Car Overheats. CAUTION: when you mount the new thermostat handle the thermostat housing with allot of precaution because it can easily crack and you end if with a leak (where not only water escapes but the engine can get air inside the coolant system which is a bag factor when it comes to overheating). Situations like this are a good example of why I chose to put a common engine, like my small block Chevy, in my daily driver classic instead of rebuilding the original Studebaker one! As I waited yet again for my car to cool down before putting the new thermostat housing on, I was glad to have a little entertainment with me in the car. So I bought a new thermostat (which i should have done to begin with, i know. Did you replace all plastic parts?. Your temperature gauge shows what your engine temperature is really doing. They both seem to overheat, Have since then replaced the radiator, thermostat 3 times (All 3 Replaced with OEM Thermostat) Burped the coolant system, confirmed hose's are routed properly, Burped coolant system again, and still overheating. Why is my car smoking but not overheating? I took my car ( a 95 legacy wagon)on a drive( a long drive about an hour ) for a second time and the coolant exploded out of it. Comments: Hi there, i have a 97 e36 328i i got it from a friend who said it had trouble overheating on a winter morning and has sat for atleast a year, when i got my hands on it i noticed that the thermostat housing had cracked so i got to work and replaced it with a new metal housing and thermostat. So there is really only two things left: one thing is the radiator and the second is the waterpump. This article applies to the Audi A6 C5 (1998-2004). The thermostat is what's causing my overheating issues. One sign that you might have a stuck-closed thermostat is rapid temperature increase during normal operation. You can test this by letting your car idle long enough for the engine to heat up. I personally went through 6 gallons of distilled water flushing the system. Those elements are the heat exchanger, fan, water pump, thermostat and coolant, according to Techauto. 6 Most Common Reasons Your Car Overheats With summer on its way, temperatures are rising - and the risk of your car overheating is on an upward trend as well. The heart of the system is the engine and the coolant, which is a liquid mixture of water and concentrated coolant/antifreeze. Common Causes Of Engine Overheating And How To Fix Them. Now we know what a car thermostat is and how it works. The most common cause of overheating following the replacement of a thermostat is air trapped in your cooling system. Dodge Ram 2002-2008: How to Replace Thermostat. Can no thermostat cause overheating? I recently bought a project nissan 240sx from a guy that said he swapped a stock ka24de motor into it, it overheated and he parked it for 3 years. Cars overheat most often in very hot weather. If your car is overheating in the winter, consider what is occurring right before the car gets too hot. New Car Buying Guide it’s important to pay attention to your car and look for signs that the engine may be overheating. my mechanic did a pressure test found nothing. It is still overheating!! The heating core was disconnected and the car worked fine for 2 days and then went back to overheating. It’s important for drivers to know why their car may be overheating! It’s certainly cause for concern when you see the engine temperature needle in your European automobile moving into the high range… which is an indication of an overheating engine. The radiator's principal job is to cool the car's engine. First, always carry an extra bottle of coolant (also called antifreeze) in your car, as well as a jug of water. If that checks out you can usually use a garden hose to blow the crud out of the heater core. My car keeps overheating. Already replace the thermostat but still overheating. As the Audi A4's engine reaches the optimal temperature, the thermostat opens up to let coolant run through the radiator. Close to 45 minutes in my car start overheating. Overheating can destroy a thermostat When you overheat an engine from a coolant leak or whatever you can destroy the thermostat. Cars, new and old, overheat for a variety of reasons. Just replaced radiator and thermostat, but still hasn't fixed the problem. A bad thermostat can cause the car to overheat. If your gauge accurately shows the engine to be overheating and the fan is NOT coming on then the problem can be in the auxilliary fan's temperature sender (located in the driver side radiator tank of factory closed systems), fan relay (near radiator on driver side fender well) or issues with the wiring. check the following items, thermostat, thermostat housing, radiator. It is overheating after I've changed the thermostat, there are no cracks in the cylinder block and radiator, brand new gaskets. If you have a tiny leak in your rad, black pepper (ground) can stop it. I recently replaced the head gasket, flushed the coolant and checked for blocked cores, and replaced the thermostat. A faulty coolant temperature sensor may also trick you by thinking that your car is overheating but it's actually not in reality. Cars, new and old, overheat for a variety of reasons. Also, make sure the unit’s temperature is not set too high on auto. Car Overheating Causes. Why is my 1996 Honda Passport still overheating? I have replaced the thermostat (and experimented running without the thermostat), flushed the radiator, and replaced the water pump. This failure may cause the engine to overheat. #7) Use a thermostat with a small hole at the top to bleed air upon filling. This MasterKit will help you navigate the process, find a trustworthy mechanic and save up to $50 when booking maintenance services through Openbay (a Liberty Mutual partner). Your thermostat is another great indicator that engine conditions are getting a little too hot. If it doesn't overheat again replace your old thermostat with a new one. Not a TDI, but your problem sounds so similar. Your car's automotive thermostat is the part that fails most often, so it's the first place you should start if anything's amiss. #6) Have the radiator flow-checked. In a race car, it's a band-aid but not one that you should plan to rely on. But it sounds like the cooling fan is not coming on. I also found a 180F thermostat at an autoparts store while traveling. One of the primary things you will want to check if your car overheats is the radiator. 7 liter engine. If your coolant gauge never goes above normal then your cooling system is adequate for your use of the. If you notice the temperature gauge is reading higher than average, and it is not particularly hot outside,. Common Reasons Your Car Overheats Summer is here, and that means the temperatures are on the rise, but hopefully the same isn't said for your vehicle. The first. My car keeps overheating. The car is a few years old now- 03. Figure Out Why Your Toyota is Overheating - Toyota Parts Blog The temperature of your Toyota’s engine should be nice and consistent when you’re driving, ideally half-way between “H” and “C”. Why is my car overheating? Engines is overheating even after a new thermostat and new water pump. It regulates the amount of coolant that circulates in your engine system. Why does my Car Overheat Randomly, with No Pattern or Reason? This kind of situation is really cut down to two things: air in the coolant system or a thermostat with a sense of humor. Then I bought my TDI, which I still have 12 years later. Leading me to get a hell of a deal on it. An article from Villanova. Then I bought my TDI, which I still have 12 years later. If you notice that your car overheats soon after you turn it on, you could have a very low coolant level, a malfunctioning thermostat, a broken fan, or a leak in the cooling system. Cant figure out why my avenger is still overheating, sucking down gas and coolant, oil is fine freshly changed flushed radiator, the only thing not replaced is water pump and my fans. It would work fine with just the driver and one passenger in almost any circumstance; even an additional child would cause the car to become very sluggish, and, in the summer months, prone to overheating. If it’s not, you’ll need to figure out why. Why is my car overheating> I have replaced thermostat, gasket seals, radiator - Answered by a verified Lexus Mechanic We use cookies to give you the best possible experience on our website. I got a 2003 Chevrolet Impala overheating. In reality, your engine temperature is always going up and down, that's why there's a thermostat in the car; to help stabilize the temperature and keep it in the range where your engine operates best. If the thermostat fails in the closed position, your Land Rover can overheat in a matter of minutes. Unless of course. Read on to know what you should do when your car seems ready to overheat. If your car has overheated, or you just want to take preventive measures here are five things you should know. My next post is about why you need to overhaul your car engine, and how you can save money on overhauling your car engine. What can happen is a heater core is restricted, so heat transfer is poor, but this does not seem to be the case with your car. Hi Guys, Was wondering if anyone could offer any guidance on a 545i that keeps overheating after about 6 minutes of driving. i took my car to the mechanic and he changed the. A leak in a car’s cooling system is the primary reason why engines overheat. Car overheating is a common automotive problem that can occur for a variety of reasons and cause significant and costly engine damage. Cruze LTZ 1. Change thermostat for a 160 degrees thermostat,, also make sure coolant is proper amount, water will not cool and engine,,, if all that doesnt do it then your radiatir has to be blocked,, Glenn Z I am going to assume with my answer that the car overheated because of the low coolant level due to the water pump leak and low coolant level. Stop by your local Midas with any questions or to determine when your vehicle needs this critical service. Having a mechanic pull your head and replace your head gasket can cost thousands of dollars, and means your car is off the road for several days or longer. Now we know what a car thermostat is and how it works. Mercedes didn't do that. Car overheating problems can be costly. Cooling issues - overheating in traffic I was cruising through stop and go traffic yesterday for about 15-20 minutes and the red light came on in the coolant gauge. Coolant loss will also cause an overheating condition. It was left running for at least 30-45 minutes; no issues. To help you know what to do if your car overheats, here are 5 easy steps. Water pump is next i guess. Car Is Running Hot. But it’s important that you let your cooler head prevail and follow these tips: If you’re stopped in traffic, put the car in neutral or park and rev the engine a bit. When it starts creeping into the danger zone, look under the hood to see if your electric fan is running. " It could be something as simple as a faulty sending unit or thermostat. When I drive a while, I can see steam coming from the side where the coolant is located and it is boiling once I opened it. Not my car- a colleagues. Why is My Car Overheating When the AC Is On?. If overheating is indicated on your dash, do not delay in getting it checked out and repaired. New Fan Motor. If you are experiencing overheating problems on your bricklin, here is what to do: Check your fan belt. The cooling system is designed to remove heat from the engine to keep the engine operating in it's optimal temperature range. Replacement and installation of a thermostat in your car, truck, SUV, or van. New water pump, radiator cap and thermostat. hello i have a question my jeep keeps over heating at first i thought it was the water pump and the thermostat so i replaced both and the thermostat is 195 oem but that did not work either it still kept over heating untill the raidatior cracked so i replaced the raidaitor and the radiator cap with a 16 lbs cap and i also revurse flushed the. Cooling - Overheating. Thanks, will have this done. Also, if your leaking water at all, but can't find it. There’s a leak in the cooling system. Toyota Camry 1997-2001: Why is My Car Overheating? Why your car is overheating can be traced to a few locations under the hood. Learn how to diagnose an overheating issue. 'the ecobee is displaying the wrong room temperature no way is it 69 in here right now' Of course my wife is NEVER wrong on…. I'm up in the fairly cool air in Colorado and when I bought it I couldn't get home without it overheating four times a. If your water pump is leaking, and the car is overheating, you have issues. Here's What You Do If Your Car Overheats. My Chevy Malibu is in a very odd condition. Then dry the surfaces with a. I have new radiator stock 2 core, 160 thermo, and a new water pump. Why is My Car Overheating When the AC Is On?. Flushing the coolant system is relatively easy. Leaks can occur in many areas, including: the radiator, water pump, thermostat, and hoses. Might have a. I would first drain ALL fluid. COM — Why does your car heater blow cold air? Chances are that if you’re getting a blast of cold air you don’t want when you turn on the vehicle’s heater or defroster, it’s a sign. If your radiator, belts, and hoses are in good repair and the car still overheats, replace the thermostat. A thermostat can often be the main control unit for a heating or cooling system, in applications ranging from ambient air control, to such as automotive coolant control. The most common cause of overheating following the replacement of a thermostat is air trapped in your cooling system. However if it persists to overheat after that, then more likely a faulty hardware is triggering it. (for instance if you pull a vacuum on the cooling system it will boil at room temp. How to Troubleshoot Car Overheating Causes. I started it up and the heaters stay cold up. Coolant loss will also cause an overheating condition. Your car may not immediately explode or anything like that, but driving with an overheating engine can cause serious damage to your vehicle. Leaks can occur in many areas, including: the radiator, water pump, thermostat, and hoses. Unfortunately, the first sign that anything is wrong is when the engine temperature needle shoots up into the red, or you get an overheating symbol flashing up on the dashboard. Cooling - Overheating. Hyundai i10 Car overheating problems can be costly. Car is still overheating! Skip navigation Sign in. An overheating car can be frustrating any time of the year, but especially when it's cold outside. Water pump is next i guess. Let’s take a look at 10 of the most common reasons for the problem. Test the new tstat by boiling water and putting it in to make sure it opens. If you can’t locate any leaks, your thermostat may be malfunctioning. The heart of the system is the engine and the coolant, which is a liquid mixture of water and concentrated coolant/antifreeze. If it fails, you risk overheating and perhaps ruining the whole engine. Your new thermostat may have broken the first time your old engine overheated. Many individuals make the mistake of continuing to drive with excessive engine temperatures and, as a result, cause costly engine damage that otherwise would not have occurred. However if it persists to overheat after that, then more likely a faulty hardware is triggering it. Its normal for the coolant fan to kick on with the AC because the heat load from the AC is expected to require extra air flow. I boiled my thermostat and it opens just fine. CAUTION: when you mount the new thermostat handle the thermostat housing with allot of precaution because it can easily crack and you end if with a leak (where not only water escapes but the engine can get air inside the coolant system which is a bag factor when it comes to overheating). Overheating ls1. My car is overheating very quickly, what might be wrong with it? If I drive my car (a Mazda 323) for longer than about ten minutes, it starts to over heat big time. What to Do When Your Engine Overheats - EricTheCarGuy- Stay Dirty! In this topic you will learn to identify Engine Overheating and What to Do When Your Engine Overheats. *Yes, your car IS overheating, even though you don’t see clouds of steam and vapor pouring out from under the hood. Thermostat would be my first thought,otherwise may be an airlock. If your wondering why your car is overheating, the chances are that there's a problem with one of the components of the cooling system. If it's empty or low, fill it to the correct level and see if that fixes the problem. Read on to know what you should do when your car seems ready to overheat. You may think you can keep an eye on the condition of the hoses, but it is harder to do this than you think. Water pump is next i guess. To replace this element, you will have to buy a new cycling thermostat and place it back where you found the old one. Loose or Broken Belt The belt is the link turning the water pump at the necessary speed for maintaining proper coolant flow throughout the cooling system. But it sounds like the cooling fan is not coming on. " It could be something as simple as a faulty sending unit or thermostat. Bad Thermostat Even under the best of circumstances, a thermostat valve provides a restriction to coolant flow through the system, and pressure holds it closed. some things to look for: * leaves and other debris blocking the grill/condenser/radiator. Towed to garage and had a new thermostat put in. Already replace the thermostat but still overheating. Some vehicles have bleed. A bad thermostat can cause the car to overheat. Just replaced radiator and thermostat, but still hasn't fixed the problem. They've taken it to a main dealer and the dealer wants to fit a. The radiator’s principal job is to cool the car’s engine. If the thermostat fails, you may notice that your check engine light has turned on as well. Then Mechanic did work, then overheating Third issue, occasional ETC light. e the car must be having the overheating issue. Your engine thermostat controls the flow of coolant in your car. The thermostat is a cheap part and it has a critical rule. Test the new tstat by boiling water and putting it in to make sure it opens. Thanks, will have this done. Flush it out and fit a new thermostat. The engine has to reach a specified temperature before the computer will go into what is called closed loop mode. Overheating car engines can be caused by: Water pump failure. Protech: You could have a bad cylinder head gasket or leaking intake gaskets causing your overheating problem, or it just could have a large air pocket in the cooling system from when you changed the thermostat. Hi my name is Jim. If your Honda Accord is overheating, the cause could be any of the vital elements of the cooling system. Otherwise, just seal the radiator with a new radiator cap. There’s a leak in the cooling system. My husband refuses to run the air conditioning in heavy stop-and-go traffic or if we are sitting in the parked car. This helps prevent the engine from overheating. Toyota Camry: Why is My Car Overheating? An overheating engine is a stressful problem. Not three minutes into the drive I get the same message "idle engine overheating," I'm very nervous but keep going and about two minutes later I get a new message "shut engine off engine overheating. Fixing car heat issues Things to check first. And considering the variety of causes, you can't be too careful. I got everything hooked up and it seemed to be running fine.