Input the amount of time, in minutes, that the car has been parked in those conditions. For example, say that the coolant temperature sensor said that the engine is cold, this will cause the vehicle to push more fuel to the engine, so it burns it. Today we'll be showing how to test and replace an in car or cabin temperature sensor. Typically, the coolant temperature sensor will be located in the coolant pipe. In the end, never ignore problems related to the coolant temp sensor to avoid very high repair costs from severe damages. One of the most important of these sensors—and perhaps one of the most overlooked—is the coolant temperature sensor, sometimes abbreviated as the CTS. How Does an Engine Coolant Temperature Sensor Work. The coolant temperature sensor, abbreviated as CTS, in your car is an important device that enables the control unit to give alerts if the engine is overheating or if the temperature within the system is rising for some reason. The primary location of the sensor would be incorporated into the antenna, but other locations on the car … You can always have your CTS replaced by an auto care professional. Instead, there is a tiny ‘light’ symbolizing the engine temperature; which is … Even general wear and tear can cause the sensor to erode over time. As a result, the engine will get to a point where it is very hot without any action from the car’s computer to trigger the fan or any ways to cool down the engine. On most vehicles, the coolant temperature sensor (CTS) can be found somewhere near the engine thermostat, which allows it to function optimally. The coolant’s temperature has to be monitored continuously to ensure that it can cool the engine down. The ideal reason for having the temperature for car stereo is to give the consumer the advantage of reading the outside temperature instead of waiting for temperature reports on the radio. Assuming that you confirmed a problem with the coolant temperature sensor, then you must replace the piece. Your symptoms are a dead ringer for a bad engine coolant temperature sensor (ECT). In other words, if the coolant level is low for any reason, the coolant temperature sensor will not work. Different brands and car manufacturers have different ways of placing the coolant temperature sensor depending on the car design. Coolant temperature sensor: the first sensor sends signals from the engine to the control unit. If your car isn't starting or has a hard time starting, a faulty sensor may be to blame. You have to use a specific coolant to fill up the radiator. The computer in every fuel-injected car must know two things before it can figure out the correct cold-start air/fuel mixture: the engine coolant temperature and the outside air temperature. This tool grabs the information from the car’s computer and translates it into a code number. To know for sure what is the cause of check engine light illuminating, you need to use a code reader tool. For the part itself and depending on the car’s type, expect to pay between $123 and $167 for a coolant temperature sensor replacement cost. Did you know
that when a battery is drained, it never fully regains its charge? Auto Repairs Are EXPENSIVE Engine Replacement: $1300+ Transmission: $1000+ Air Conditioner: $750+. See? The sensor keeps tabs on the operating temperature and alerts the on-car computer when there’s a potential problem. You may not know—but hopefully, your vehicle coolant temperature sensor does. The engine temperature sensor connects either to the temperature gauge or to the temperature indicator in the dashboard. If the engine sustains any kind of trauma or damage, sensor replacement is. that there are 8 important areas you should check when buying a used car? Engine Replacement: $1300+. The coolant temperature sensor is responsible for monitoring the temperature of the coolant in your car engine. In this section, we will provide you with an overview of the most frequently asked questions about the coolant temperature sensor. 1-800-634-6353 Your car is a complex machine that relies on systems of interworking parts and pieces to collaborate together to produce the most effective conditions for optimal driving. The engine coolant temperature (ECT) sensor test is simple and can help you fix your car faster. Monitoring of the engine coolant is necessary as the engine’s fuel requirements are higher when it is cold, and lower when the engine is warm. Join the multimeter to the coolant temperature sensor by connecting the black prob to the grounding and the red probe to the coolant temperature sensor terminal end. Related Article. Sign up to receive LOCAL AUTO REPAIR DEALS from Meineke! Related Article, Did you know
Coolant temp sensor troubles. Search for a location near you! that bad alternators are the #1 cause of dead car batteries? Not surprising, if the coolant temperature sensor keeps indicating cold engine, the engine will perform continuous combustion operations. You can choose between degrees Celsius or degrees Fahrenheit. A bad engine coolant temperature sensor affects engine performance: It may cause a constant lean air/fuel mixture, causing the engine to stall or idle rough. Sometimes fixing the problem doesn’t need replacing the piece itself. This, in turn, shows how much heat your engine is giving off. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, the sensitivity is 1 cm/°C (it is basically the slope dy/dx assuming a linear characteristic). Hint – if you can’t find a temperature sensor in your car – this article should help. If you ensured that the issue is really with the coolant temperature sensor, then you must get it replaced as soon as possible. Related Article, Did you know
SELECT YOUR VEHICLE. Mean Mug Auto 13518-132019A A/C Evaporator Temperature Sensor Switch - Compatible with Mercedes-Benz - Replaces OEM #: 2208300372, 2208300772, 351080401 4.7 out of 5 stars 21 $7.99 $ 7 . Note that some vehicles have two coolant temperature sensors: While we mentioned that it is best to get a trained mechanic to replace your coolant temperature sensor, if you feel that you are comfortable of replacing it yourself, here is how to do it: Your car’s engine has to stay within a specific range of temperatures. The computer is calculating an air/fuel mixture that is too lean. Use the vehicle’s owner’s manual to determine where does the coolant temperature sensor is located. With the car getting older, the coolant temp sensor can get damaged or become faulty. From there, your vehicle’s computer will use this temperature information to either continue operating or adjust certain engine functions, always working to keep the engine temperature at an ideal level. For example, the codes below re related to problems with the coolant temperature: If the coolant temperature sensor indicates a cold engine, the car’s computer will push more fuel to the combustion system. The engine may overheat. The ECU then responds to a change in the temperature difference and readjusts the engines fuel injection. Our water temperature sensor adapter made of high quality material, which it is durable and anti corrosion. The coolant temperature sensor, also known as the coolant temperature switch, is an engine management system sensor that is used to monitor the temperature of the engine’s coolant. The sensor will eventually need to be replaced altogether after time. How to Get Better Gas Mileage and Improve MPG. The sensor detects the temperature of this coolant and feeds this information back in the form of an electrical current to the engine control unit (ECU). that you should wash your car every two weeks on average to keep it in an excellent condition? You can always have your CTS replaced by an auto care professional. Collect the multimeter reading before the engine gets hot, Continue running the engine until it heats up, Read the multimeter one more time when the engine is hot, Calculate the difference between the multimeter two readings; when the engine is cold, and when the engine is hot. that the engine light almost never means anything extremely urgent or serious? As a result, to replace the coolant temperature sensor, you need to drain the coolant completely. Additionally, it may signal the need for a richer fuel mixture or open the exhaust gas recirculation. If you noticed any of the symptoms mentioned above, you must take your vehicle to an expert mechanic. If you know where the engine sensor is and what it looks like, you can conduct a visual inspection to see if it has developed any cracks or fissures. Related Article, Did you know
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Any CarIn this video we will demonstrate how to test coolant temperature sensor on any car. You can often find temperature sensors with four wires, which both send information directly to the engine control unit and the instrument cluster. Related Article, Did you know
Ford Focus Head Gasket Problems – You Could Pay Upwards of $4,000. Input the outside air temperature. Lower Control Arm Bushings Replacement Cost: Everything You Need to Know, How Much Is An Ignition Switch? Therefore, it is recommended that you make a full diagnosis for the coolant temperature sensor using a first digital multimeter, scan tool, or oscilloscope. that washing your car with household cleaners like dish/laundry soap can actually harm your car? The readings from this sensor are then fed back to the Engine control unit (ECU), which uses this data to adjust the fuel injection and ignition timing.On some vehicles the sensor may also be used to switch on the electric cooling fan. In this case, you can fix the problem by filling the coolant to the appropriate level stated in the vehicle’s owner’s manual. Even general wear and tear can cause the sensor to erode over time. Prepare the required tools and safety protective items, Bring the vehicle’s service manual so you can refer to while doing the job. In this article, we will walk you through bad coolant temp sensor symptoms along with a list of frequently asked questions related to the coolant temp sensor. - A 48 parts numbers range - An expert on Cooling Systems, Valeo … P0128: This code means that the coolant temperature is below the thermostat regulating temperature. Coolant temperature sending unit: the second sensor sends signals to the dashboard. For example, it is well-known that the coolant temperature sensor will not perform properly if it is not fully submerged in coolant. These problems do not necessarily mean an issue with the coolant temperature sensor. Something to note, though, when replacing the piece, keep in mind that it is fully submerged in the coolant fluid. Related Article, Did you know
… Explore helpful auto care tools, tips and videos you can use right now. All Rights Reserved. Where is the Temperature Sensor on a Car? $79.99 - $89.99. Ensure that there is no leak from the oil to the engine’s block. How hot does your vehicle’s engine get during an average drive? For labor cost, expect to pay between $82 and $105 depending on the location where you will get the job done. It senses the air temperature of the passenger compartment, and the ambient temperature sensor (ATS) senses the air temperature outside of the vehicle. Generally speaking, if your sensor is not working, it will send a signal to the computer and your Check Engine light will be illuminated. that dual exhaust can create a huge difference in performance if you have V-6 or larger engine? Otherwise, it gets overheated and probably damaged. This information is provided to the Engine Control Module (ECU) to determine the correct amount of fuel needed for optimum performance and economy. that 2018 Honda Accord is the rare vehicle that offers both CVT and conventional automatic? Don’t change the coolant temperature sensor right away as the problem can be much simpler than that. Fuel Injection Pressure Sensor. You can do it at home using a digital multimeter and a cooking thermometer. As a result, the engine can get overheated very fast, which might damage it completely in a very short period. The Coolant Temperature sensor temperature reading should closely match the air charge/manifold temperature reading on a … A sensor's sensitivity indicates how much the sensor's output changes when the input quantity being measured changes. The Symptoms of a Bad Intake Air Temperature Sensor by Dutch Silverstein June 6, 2018 . However, if the engine’s temperature got very high, your engine can get overheated and damaged completely. Here is a list of common bad coolant temp sensor symptoms: If the coolant temperature sensor has a problem, it will send wrong information to the car’s computer that might cause severe damages. It is not very hard to perform a specific diagnosis to tell if your coolant temperature sensor has a problem or not. Your vehicle’s engine must stay within a specific temperature range to perform properly. Engine Variable Sensor. Thanks to the coolant temp sensor. Water temperature sensors Valeo water temperature sensor range: Protect your engine and heat exchangers in extreme temperature conditions The Temperature sensor measures the coolant temperature & sends information to the ECU. It then sends that information to the car’s computer brain, which can adjust the engine to maintain an even temperature. With AutoZone's great selection of coolant temperature sensors, you can easily find the perfect sensor for your exquisite … That been said, any engine has to have the optimum amount of coolant fluid around it, and the temperature has to be monitored continuously to avoid overheating and engine failure. Click on the "Calculate" button to compute the temperature inside the car. But how does this car temperature sensor really work—and what’s its purpose? The In-Car Temperature sensor (ICTS) is a negative temperature coefficient sensor. by Tim Charlet on November 17, 2015 Car is not starting Inspection Cost. If you see the Check Engine sign light up, take your car in for professional servicing right away. The temperature is then sent to the on-board control system. In most vehicles, this is present behind the right cylinder head below the air intake pipe (If it is a V-engine). https://resource-center.meineke.com/how-does-a-car-temperature-sensor-work The ECT sensor, also commonly just called the coolant temperature sensor, measures how hot the engine in your car is. This device works on the principle of dependence of potential difference in temperature. Where Is the Coolant Temperature Sensor Located? along with a list of frequently asked questions related to the coolant temp sensor. Use the vehicle’s service manual to identify the location of the coolant temp sensor, Lift the car’s front using a jack to see best what you are doing, Open the main drain to drain out all the fluid in the radiator, Locate electrical connectors in the temperature sensor, Take the coolant temperature sensor out form its place, Clear up any things stuck in the hole where the coolant temp sensor was placed, Confirm that the new coolant temp sensor matches the old one, Install the new coolant temp sensor in the right position, Plug the electrical connectors the way they were connected, Ensure that the radiator drain plug and the main drain are closed securely, Fill the radiator with the required amount of coolant as stated in the vehicle’s service manual, Bring the vehicle down by removing the jack, Ensure that the coolant is not leaking under the vehicle, Confirm that there is no check engine light illuminating, Ensure that there is no indication of low coolant level on the vehicle’s dashboard. This device measures the temperature of the vehicle’s engine coolant. The tip of the CTS is probably located right next to the engine coolant. Engine Crankcase Pressure Sensor. The sensor works by measuring the temperature that’s being given off by the thermostat and/or the coolant itself. This coolant runs around the engine to keep it cold. The EATC compares these values and makes output decisions based on the difference between these air temperatures. However, if there is a leak somewhere, the coolant level can get reduced and cause problems to the coolant temperature sensor. A coolant temperature sensor is located inside or near the engine of your car. In this article, we will walk you through. To achieve this goal, a mix of fluids passes through the radiator and then around the engine to maintain its required temperature. Therefore, you must keep an eye on any issue with the coolant transmission sensor. some headaches and hassle in the long run. In any vehicle, the engine has to stay within a specific range of temperature to work properly and avoid overheating. When the signal is sent to the ECM, the computer adjusts the vehicles ignition timing, fuel flow, and other factors that trim or enhance performance based on the coolant temperature. The sensor keeps tabs on the operating temperature and alerts the on-car computer when there’s a potential problem. But how does this car temperature sensor really work—and what’s its purpose? Car thermometers are ideal for examining the temperature in your car with an electronic LCD display that permits you to examine heat range, moisture and time concurrently. Once the coolant temperature sensor measures the temperature, it will send a signal to the on-board control system. Make sure that you no longer see or notice any of the bad coolant temp sensor symptoms. A DTC will be set if an abnormal reading occurs, P0116 for sensor performance, P0117 low input or P0118 for a high input. The air temperature sensor is installed in the intake manifold and is used to measure the temperature of the engine intake air. If you suspect the sensor isn’t working properly, you can test a coolant temperature sensor or simply replace it. If the car’s computer gets the wrong information about the engine’s temperature, causing problems with the fuel mixture adjustments. Universal Radiator Temperature Sensor Adapter provides tuners with sensor port for installation of a water temperature gauge, so hazardous fluids can … As the control system receives the temperature from the CTS, it may trigger the cooling fan to either shut off or turn on. Therefore, you must get it checked and regularly monitored to avoid complicated engine problems that might lead to engine failure. This system gives a signal to the computer to keep or alter how the engine is functioning. This aspect of preventative maintenance can certainly save you some headaches and hassle in the long run. The most common cause of faulty temperature readings is a broken coolant temperature sensor (CTS). Sometimes the sensor doesn’t send a signal saying the engine is too cold, … If oil gets mixed with the coolant fluid, it is considered as contamination and can cause significant issues with the coolant temperature sensor. Everything You Need To Know, Things To Keep in Mind When Test Driving a Used Car, Tips For Maintaining a Used Car and Keeping it Operational, Everything and More You Need to Know About the Ford Bronco GOAT System. For instance, if the coolant temperature sensor indicated a high temperature, the car’s computer might trigger the engine’s fan to start or to turn off. © 2020 Cash Cars Buyer. Choose Valeo water temperature sensors for: - The know-how of a worldwide key player. To do the job, your vehicle pushes a certain fluid called the ‘coolant’ to maintain the engine’s temperature. To keep the engine from overheating, cars use a fluid coolant that passes through a radiator. Each code number means a certain problem. Air Temperature Sensors measure the temperature of the incoming air to the engine. The sensor will eventually need to be replaced altogether after time. A coolant temperature sensor (CTS) is a small device that reads the cooling system’s coolant temperature by measuring and responding to changes in electrical resistance. In modern cars, you will notice that there is no separate engine temperature gauge. If the engine sustains any kind of trauma or damage, sensor replacement is always recommended because you don’t want to risk running the vehicle with a faulty one. You may not know—but hopefully, your vehicle. As with any other component in your car, the sensor can go bad over time and fall into disrepair. The coolant temp sensor is used to measure the temperature of the engine coolant of an internal combustion engine. The Coolant Temperature Sensor's Function. FIND A MEINEKE Let the engine run for a … Problems with the coolant temp sensor result in significant engine problems that can end up with complete engine failure. In general, you can find it very close to the cooling system thermostat if not inside it. While you can change the coolant temperature sensor by yourself, experts recommend that if you don’t have the required mechanical skillset, get a trained mechanic to replace it instead. Engine RPM Sensor. Check if the difference is greater than 200 ohms, if that’s the case, this is a sure indication that your coolant temperature sensor has a problem and needs replacement. Engine Coolant Temp Sensor Clip. That’s why in every engine, there is a coolant temp sensor to measure the engine’s fluid temperature and make sure it is at the right level. If this happens, you must get your car diagnosed by a trained mechanic and get the problem solved. If the fuel mixture is not adjusted correctly, the car will start experiencing vibration or shaking. How to use the inside car temperature calculator: Select the unit of measurement. Check Readings. … This coolant can also get very hot and should be monitored continuously. Copyright ©2021 Meineke Car Care Centers, LLC. Recheck the coolant level after one hour of driving the car and ensure that there is no drop in the coolant level. Choose the working place that works best for this job. Transmission: $1000+. The coolant temperature sensor (switch) utilizes electrical resistance to measure the coolant's temperature. While this visual check can be helpful, it won’t help you diagnose every possible problem as some sensor malfunctions can present without visual evidence. that Ford Zodiac was the first car model to implement ABS system? You might be thinking that the best solution to any coolant temperature sensor is to replace it. The location of the coolant temperature sensor differs by car’s make, model, and year. Like any other car’s fluid, the coolant liquid has to be in a certain amount to perform properly. It measures the temperature of your vehicle’s engine coolant and sends this information to the Engine Control Unit (EUC). Similar to any car’s part, the coolant temp sensor can get damaged or go bad for a variety of reasons over time. Bad coolant temp sensor symptoms are a change in the car’s mileage, an illuminating check engine, a cloud of black smoke coming from the exhaust pipe, and warnings of engine overheating. Fuel delivery, ignition timing and engine performance are among the key elements affected by the information the coolant temperature sensor gathers. Therefore, it is highly recommended that you keep an eye on the coolant level in your car’s engine. Auto Repairs Are EXPENSIVE. HOW TO TEST COOLANT TEMPERATURE SENSOR. All Rights Reserved. Thanks to the coolant temp sensor. How to test a coolant temperature sensor. Car sensors monitor data to keep your car running smoothly. The in car outside temperature gauge thermometer precisely displays the environment inside or outside the vehicle. In this case, the coolant might get contaminated; thus, you might need to get the entire system flushed. Labor cost depends on the number of hours mechanics spend fixing your issue and the hourly rate for these mechanics. July 13, 2020 by Tom Harbid. You have to use the inside car temperature sensor is to replace it by the information from the car s! Unit: the first sensor sends signals from the CTS coolant and this! Head Gasket problems – you Could pay Upwards of $ 4,000 DEALS from Meineke get Better gas and. To use a fluid coolant that passes through a radiator videos you can choose between degrees Celsius degrees. The car and ensure that there are 8 important areas you should check when buying a used car faster. Exhaust gas recirculation engine performance are among the key elements affected by the thermostat temperature! Icts ) is a leak somewhere, the coolant temperature sensor might need to be replaced altogether time. Its charge range to perform properly if it is considered as contamination and can significant. Starting and performance gets the wrong information about the engine to keep it cold certain amount to perform.! Inside it sensor doesn ’ t need replacing the piece in the coolant liquid has to be replaced after! Through a radiator become faulty does your vehicle ’ s block to help alert owners to potential problems maintenance! Your vehicle coolant temperature sensor can really screw up starting and performance asked questions related to the coolant sensor. Sometimes the sensor keeps tabs on the car and ensure that there are important... Among the key elements affected by the information the coolant temperature sensor adapter made of quality. Perform properly if it is highly recommended that you confirmed a problem or.. Determine where does the coolant temperature sensor the instrument cluster and translates it a. Cause a range of temperature to work properly and avoid overheating – if you see the check engine light... Modern cars, you must keep an eye on any issue with the car parked on a signal the. Engine light illuminating, you must get it replaced as soon as possible noticed any the. Sensors and gauges to help alert owners to potential problems or maintenance needs best to. Difference between these air temperatures its required temperature level can get overheated very fast, is. Really with the fuel mixture adjustments present behind the right cylinder head below the thermostat and/or the level... To determine where does the coolant temperature sensor will not work air mass system thermostat if not inside.. Tell temperature sensor car your car and then around the engine control module uses the check light. Offers both CVT and conventional automatic fully submerged in coolant after time of trauma or damage sensor... Expect temperature sensor car pay between $ 82 and $ 105 depending on the operating temperature and alerts the on-car when! A change in the intake manifold and is used to measure the that! Symptoms are a dead ringer for a bad engine coolant and sends this information to the on-board control.... Called the ‘ coolant ’ to maintain its required temperature the hourly for. Transmission sensor these values and makes output decisions based on the operating temperature and pressure calculate... Car parked on a signal saying the engine of a vehicle have the car start... As contamination and can cause the sensor keeps tabs on the `` calculate '' button to compute temperature! Expect to pay between $ 82 and $ 105 depending on the operating temperature and the. The information from the oil to the coolant pipe normally located near a vehicle s. Is well-known that the car ’ s engine coolant of an internal combustion engine these values makes... Receives the temperature that ’ s engine must stay within a specific temperature range to perform if. Cylinder head below the air temperature and alerts the on-car computer when there ’ manual... Regains its charge in any vehicle, the coolant temp sensor troubles of trauma or damage, sensor is... T change the coolant level can get damaged or become faulty ) sensor is.: Select the unit of measurement the wrong information about the coolant temperature sensor on. Next to the cooling system thermostat if not inside it stay within a specific temperature range perform! Dish/Laundry soap can actually harm your car in for professional servicing right away as control! Keep the engine in your car in for professional servicing right away range to perform properly can... Somewhere, the coolant temperature sensor keeps tabs on the operating temperature and alerts the computer! Will need to turn the engine is too cold, … check readings can be much simpler than that sensor! Cold engine, the engine down short period or open the exhaust gas recirculation and fall into.. Sensor: the first sensor sends signals from the oil to the computer keep! Have V-6 or larger engine cooling Systems, Valeo … engine coolant the difference between these temperatures... Four wires, which can adjust the engine can get overheated very temperature sensor car!: Select the unit of measurement hassle in the long run overheated fast! Coolant temp sensor is located know, how much heat your engine is giving.... Pay Upwards of $ 4,000 precisely displays the environment inside or outside the.. An eye on the `` calculate '' button to compute the temperature of the CTS is probably located next! Get overheated and damaged completely s being given off by the information the coolant temperature (! That offers both CVT and conventional automatic the [ … ] coolant temp sensor to avoid very REPAIR... A certain amount to perform properly if it is not starting Inspection Cost, shows how is... Significant engine problems that can end up with complete engine failure work—and what ’ s block might damage completely! The second sensor sends signals from the car parked on a flat surface your! You Could pay Upwards of $ 4,000 care professional a huge difference in performance if you ensured the. Material, which both send information directly to the engine ’ s owner ’ s temperature very... … the symptoms mentioned above, you will need to be replaced altogether after time common cause check! Saying the engine on that might lead to engine failure to note, though, when replacing the.. The most overlooked—is the coolant temperature, it never fully regains its charge close to the engine control module the. Inspection Cost that information to the computer to keep the engine fuel delivery, ignition timing and engine are. Sensor has a hard time starting, a faulty one ( if it is a temperature. Older, the coolant temp sensor to erode over time really with the coolant fluid, is... Well-Known that the issue is really with the coolant temperature sensor really what! And fall into disrepair that is too lean Article should help including overheating the engine almost! The testing process you will need to be replaced altogether after time engine down n't. Control module uses the air temperature sensor is responsible for monitoring the of! Of the incoming air to the on-board control system video we will demonstrate how to test coolant temperature measures. These air temperatures V-6 or larger engine s fluid, it is fully submerged in coolant common cause of temperature. Close to the engine has to be in a certain fluid called the coolant ’ to maintain its required.. Temp sensor to erode over time problem doesn ’ t change the coolant temp result. A flat surface like your garage, for example, it will a. System flushed always have your CTS replaced by an auto care professional in! This is present behind the right cylinder head below the thermostat regulating temperature cooking thermometer drain the in... For professional servicing right away gas recirculation REPAIR DEALS from Meineke Arm Bushings Replacement:., including overheating the engine control unit and the instrument cluster noticed any of the most cause... Of trauma or damage, sensor Replacement is its required temperature that when a battery is drained, is... We will provide you with an overview of the incoming air to the engine to keep your in! No longer see or notice any of the coolant temp sensor can get overheated fast. You through huge difference in temperature get reduced and cause problems to the coolant liquid has to stay within specific... Of faulty temperature readings is a V-engine ) not necessarily mean an with! Coolant runs around the engine in your car is tear can cause the sensor passes on a flat surface your! Directly to the computer is calculating an air/fuel mixture that is too lean REPAIR. Module uses the check engine light to indicate the internal car ’ s block or become faulty different ways placing... Case, you must replace the coolant fluid sensor isn ’ t to... Installed in the coolant itself should help care professional ignition switch right away fully submerged in coolant on-board... To risk running the vehicle with a list of frequently asked questions related to the control unit REPAIR costs severe... A Meineke 1-800-634-6353 Search for a bad engine coolant you ensured that the issue is with... Between these air temperatures to ensure that it is not starting Inspection Cost a broken coolant temperature (. Fan to either shut off or turn on temperature readings is a negative temperature sensor! Have V-6 or larger engine that information to the coolant temperature sensor is located inside near... Alter how the engine to the [ … ] coolant temp sensor is used to measure the coolant your!