Blog. The airflow temperature, the engine's speed, and other factors will be directly impacted by this unplugging, leading to engine damage, poor fuel economy, a rough idle, and power loss. Iqbal Khan is the founder of a team of highly skilled technicians specializing in Automobile Electrical Technology. It will be challenging for your car engine to burn fuel without it. This sensor is usually located on the throttle body. However, the long-term consequences can greatly impact the health of your car. Instead, your mechanic should check it out whenever you take your car for routine maintenance. The throttle position sensor is located on the throttle body. The throttle position sensor can fail over time due to exposure to heat and vibration.When this happens, it will usually cause the engine to run rough or stall. Amongst the many issues that cause your car to run roughly or prevent acceleration, the throttle position sensor is a common culprit. This article will discuss the harmful effects of unplugging the throttle position sensor. In turn, your fuel usage might not be as economical as advertised because the engine might be using more fuel than it requires. Your car should have a throttle-body cleaning as part of its regular maintenance schedule. Carbon deposit buildup inside the engine and the exhaust system. In most cases, the engine will stall as soon as you hit the gas pedal. Meanwhile, the severity of the effects will depend on the car type and model in question. How many catalytic converters are there in a Ford F-150?, Read More How Many Catalytic Converters Are in a Ford F150?Continue, Is it possible to mix 5w30 and 5w20 oil? If one heeds in getting it replaced, they may find themselves stuck along the highway. When the engine is idling, the throttle plate is closed and the sensor sends a low signal to the computer.As you accelerate, the throttle plate opens and allows more air into the engine. However, if you installed a new sensor, youll have to reset the TPS as well as the computer. The TPS as we call it is one of the most important sensors on the engine. MAP Sensor. and it runs rough. Here are some common symptoms of a bad or failing throttle position sensor to watch for: 1. E85 is also known as the flex fuel because of its use of alcohol. Ensuring that only the correct air-to-fuel ratio is admitted inside the combustion chamber is essential in enhancing the drivability and performance of your car. The check engine light does not come on until I disconnect the MAP sensor. The first step is to disconnect the battery. It will also encounter difficulties in accurately timing the ignition. So, what happens when you unplug the throttle position sensor? You most likely went online to find a solution after this experience. Does a throttle position sensor . These reasons are why you shouldnt attempt or contemplate doing it. Here are some of the answers to the frequently asked questions about the TPS and what will happen if you disconnect it from the engine: Once you unplug the TPS, your vehicle will not run properly. This indicator is a vague symptom, as it could also point to a variety of issues, but you can expect to see it if there's any issue with your throttle position sensor. It is best to keep the throttle position sensor in the vehicle. Throttle Body Vs Carburettor: Whats the Difference? Also, you can experience your car lacking power when you try to accelerate (i.e.. ). So what happens if you disconnect the throttle position . Dry off the solvent. However, if you have the light pop on and there are other issues we have listed, you should have the TPS checked. Lastly, the check engine light will likely come on. Disconnecting the throttle position sensor leaves your engine control unit (ECU) confused about the position of the throttle, which has various consequences depending on the type of car you drive. He has authored 250+ articles on easycarelectrics.com and is dedicated to providing expert solutions for automotive enthusiasts. This information goes to the vehicle's computer (ECU). These cars need the signal from the TPS to know where you have placed your foot so it can determine what you intend to do. Crankshaft Position Sensor [Symptoms, Location, Replacement]. It can also put you in danger of a road accident because your engine sometimes stalls or surges when you do not step on the gas. It will also result in inefficient engine performance because the ratio can be higher than it should be or sometimes lower. This could happen with a throttle position sensor being unplugged or in need of repair. In summary. Here Are 7 Methods To Bypass the Neutral Safety Switch, Check Charging System Warning Ford Explorer: What to Do When It Comes On. Furthermore, you shouldn't wait for the sensor to become faulty before taking action. If your TPS becomes dirty, damaged or damaged, it will send inaccurate readings to your computer which will cause your idle quality and economy to suffer, so even though resetting it may bring temporary relief, replacement is recommended for optimal performance. The engine could deliver more power even if you have taken your foot off the gas pedal. Related content: Can You Turn Off Cylinder Deactivation? If the throttle position sensor goes bad, the car's performance With the information from the TPS and other data from the engine RPM, MAF, temperature, and others, the ECU will determine the exact quantity of fuel allowed into the engine and the timing of the spark from the spark plugs. . Most times your car's throttle position sensor will be at its failing stage but . More seriously, there will be a major carbon buildup inside the engine and the exhaust system, which can lead to major engine problems. Shoot compressed air into the throttle body to dry the spray solvent. Additionally, it will not be able to determine the exact position of the throttle at any one time. Depending on the year and model of your car, its engine could also stall or surge. That will cost you in maintenance down the road, if not right away. The Function of the Throttle Position Sensor. Depending on your car model and year, as soon as you unplug the sensor, the engine will stall or might not start at all. On the other hand, the vehicle might give you more power than you bargained for when you ease up on the gas. If you unplug the TPS of your vehicle, its engine will not operate properly. What Happens If You Do? In some cars, it will increase airflow. The primary function of the TPS is to inform the ECU about the throttle position. If you disconnect it, you are courting danger and risking your cars life and health. A throttle sensor that is not working properly needs to be repaired as soon as possible. The throttle position sensor has a function to signal the car's electronic control unit (ECU). In turn, your fuel usage might not be as economical as advertised because the engine might be using more fuel than it requires. Your car cannot maintain a constant engine speed when idling because a constant level of fuel delivery is necessary for this to happen. Fiddling with the wrong fuse or cable could be dangerous for you. These are some symptoms of a bad speed sensor: Your golf cart may move very slowly as if it's creeping along or it may move at an erratic speed. 2023 Fixing Engines. Some cars enter a limp home mode or limp mode, like when the TPS fails. First, locate the throttle position sensor. Answered, Find out why your car sounds like a lawn mower, Oil Pressure Drops To Zero While Driving: Causes and Fixes. If the light pops on and there are other issues listed, you need to have the TPS checked. Although I've read articles about the hand brake method, I'm nowhere near perfecting it. The ECU will then provide a value that the TPS could not give (since it is unplugged). What Is The Throttle Position Sensor? The components listed below will be directly affected if your throttle position sensor is disconnected. Honda P0122 Throttle Position Sensor/Accelerator Position Pedal Circuit Low Input - Car OBD Codes The Honda OBD2 Code P0122 is defined as follows: Honda's P0122 code indicates that the TPS (throttle position sensor) is transmitting an abnormally low voltage to the car's computer, which has been identified. Resetting or reprogramming your throttle position sensor might solve some problems with the sensor. Save my name, email, and website in this browser for the next time I comment. It gives feedback on your acceleration and deceleration to the ECU and helps it determine how much fuel it should deliver to your engine. Turning Off Car While in Drive - What Happens? There is a wide variety of power problems your vehicle can face if the TPS is not up to par. Most drivers will only know about the Throttle Position Sensor once there is a problem with their engine. Required fields are marked *. What happens when my throttle position sensor goes bad. You will then need to remove the mounting screws. The first is that the vehicle may not start at all. Of those sensors, the throttle position sensor is vitally important to your car's continued functionality. The Throttle Position Sensor (TPS sensor) in your car helps ensure the proper working of the throttle valve. While you can drive with a throttle position sensor unplugged, it is best not to. The sensor is located on the throttle body and measures the amount. Your car will start to accelerate if your TPS is unplugged or in need of repair, but it will only go up a certain speed. This is because when you disconnect a sensor, the ECU assumes that something is wrong and that you need more power to make up for it. If a beginner can easily follow instructions, then they can do it. With over 5 years of experience, Iqbal is a top-performing technician and a double master's degree holder. We talk about why you would want to reset your TPS, symptoms of a bad throttle . What happens when throttle position sensor goes bad? When the engine is running I unplugged the TPS throttle POSITION SENSOR nothing happens at all. It is also necessary to recalibrate the settings when you install a new sensor to drive smoothly. And with Fixing Engines, I hope to help you save a lot of money and take good care of your cars. Actually, it all depends on which car you do that on. When the ECU knows how much air is coming in, it determines the right amount of fuel to send to the engine, ensuring efficient combustion. Since replacing the TPS is fairly easy in most cases (depending on its location), you . - Engine stalling. The cars computer will resort to guessing the throttle position. In many modern vehicles and as a safety procedure, if the ECU thinks that the TPS is malfunctioning, it puts the car into a neutral limp idle mode. This will depend upon a variety of factors. You'll observe a low gas mileage. Disconnect the air duct. It will result in your car stalling or revving in a manner that will put you in great danger. You will often experience delayed acceleration, or the acceleration can rise independently. If you replace the throttle position sensor, you will need to reset the computer so that it can relearn the new sensors idle position. Frequently Asked Questions On What Happens When You Unplug Throttle Position Sensor? If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Consequently, you might notice that your car doesnt get off the line as smoothly as you would like when you step on the gas. We believe you found this article helpful in issues related to unplugging the TPS. The throttle position sensor is located on the throttle body and measures the position of the throttle plate. Its a good idea to plug the wiring harness to make sure the clips and plugs are placed correctly. Worrying about driving a car in a region with hills can be exhausting. Your engine will be adversely affected as well as its exhaust system because there will be a significant buildup of carbon inside its internals. The TPS is one of the essential sensors an engine uses. 1. This is how it can determine what you intend to do, whether you want to go slower or faster. When you unplug the throttle position sensor, your vehicle will have normal acceleration and correct idle if the sensor has a problem. You also dont need to warm up the engine. You can monitor this as it is placed on the butterfly spindle or shaft. Indeed, the same error in the sensor position could cause the engine to stall altogether a particularly unwelcome situation for any driver. And you have to buy a new one via your garage and it's going to cost you a fair old whack, plus labour. Meanwhile, it will mean a considerable drop in the quality of the ride you get. Read more to know what happens when you disconnect the throttle position sensor. Heres whats happening when unplugging the throttle position sensor. With driving cars, some things are certain. The check engine light may come on. We wont encourage you to unplug the throttle position sensor for these reasons. But it might cause harm to the engine. There will be a list of adverse effects on the engine and the exhaust system. Without it, the computer has no way of knowing when you push down on the gas or open the throt. Also, it will need help to time the ignition accurately. There will be incomplete fuel combustion inside the engine, so that you will be wasting your money. As such, cleaning and replugging or replacing the TPS is advisable. It measures the opening and closing of the throttle valve and sends the information to the ECU. Another serious disadvantage of unplugging the throttle position sensor is carbon deposits will build up inside the engine. The car does not have its best performance. It will be confused as to the exact position of the throttle. While a logical thought may be just unplugged if you can still drive the vehicle, know that you can cause yourself more issues in the long run. During your normal driving, consider . The TPS monitors the position of the throttle plate and sends a signal to the engine control unit (ECU).A bad TPS can cause your car to stall or run erratically. It helps the computer system monitor and control how much fuel is delivered to the engine. If there is a lot of damage to the car and it has high mileage, you may want to sell it as is. Several things can happen if the TPS is disconnected from the engine. I'm Gui. The car will still be able to idle, but it will have no power when you try to accelerate. All rights reserved. The things that will be directly impacted if you unplug the TPS are the following: Unplugging the TPS will result in the following: The TPS is essential in the efficient functioning of your engine. A throttle-body cleaning is a part of your cars regular maintenance schedule. What happens if you disconnect your throttle position sensor depends on the car you drive. Gear Shifter Moves Freely But Doesnt Change Gear Causes & Solutions, Rod Bearing Replacement Cost (Everything to Know), How to Reset Battery Light: (Causes & Solution), Service Stability System (Everything to Know), Check Emission System Acura (Everything to Know). A throttle position sensor is a small electronic device that measures the angle of the throttle valve. If you unplug a throttle position sensor, the engine will lose power and eventually stall. Thankfully, I have a father-in-law who's obsessed with cars and a brother getting a PhD in internal combustion engines, so I get to learn about fixing cars. You will often experience delayed acceleration, or the acceleration can rise independently. There could be a lack of power that prevents you from speeding up. Heed any connectors or clips, and remove them. If you just have a check engine light on, the problems with the car may be minimal. You can drive your car home with a TPS code and a check engine light. However, sometimes the throttle position sensor becomes loose or gets unplugged. The throttle position sensor has a function to signal the cars electronic control unit (ECU). The function of the TPS is to send a signal to the cars electronic control unit (ECU) after determining the amount of air going into the engine. A throttle position sensor is an electronic device that monitors the position of the throttle in an internal combustion engine. If the TPS is unplugged, it will be very difficult for the cars ECU to track the airflow, the timing of the sparks, and the amount of gas the engine needs so it can start smoothly. Step 3: Remove the sensor electrical connector. Your car may lack power when you try to accelerate, it may hesitate to accelerate, or it may accelerate itself. The vehicle will need to be parked on a flat surface and you will need gloves and protective eyewear. The throttle position sensor is typically located on the throttle body, which is the portion of the intake system that houses the throttle plate. What happens if you disconnect the throttle position sensor? That's right! As such, its best to ensure that the TPS is always in the right position. Fourthly, it can cause low fuel mileage. Related content: When, How, Why You Should Use Lucas Fuel Injector Cleaner. You want to be certain you are safe, and if there are live wires, you take a huge chance of getting hurt. You have to remove the mounting screws. The health of your car can be affected by long-term consequences. Step 2 - Stomp on the gas pedal hard and then fully release it as quickly as possible 5 times in 5 seconds. So, this component controls the air allowed into the engines intake manifold. When a TPS goes bad, . You should keep reading to find out how bad a bad can be. (Explained)Continue, Maybe the catalytic converter of the Ford F-150 needs no introduction. Why would a car run better with the mass air flow sensor unplugged? Hesitation while accelerating. The map sensor is responsible for monitoring the pressure inside the intake manifold. Note that you can nevertheless drive your car even with the throttle position sensor unplugged. The moment you unplug the TPS of your car, its engine will not run properly. You can monitor this as it is placed on the butterfly spindle or shaft. (Answered), When, How, Why You Should Use Lucas Fuel Injector Cleaner. With this information, the ECU will adjust the fuel mixture as well as the timing of the ignition. Iqbal's passion for auto electrics, talent for problem-solving, and commitment to staying up-to-date with the latest industry technologies make him a valuable asset to any organization. The throttle position sensor signals the electronic control unit how much the driver tries to slow down or hasten up. Its main job is to be certain theproper amount of fuel is mixed with airto provide optimal results. Sudden engine stalling without any apparent reason. Your email address will not be published. If your sensor is not calibrated correctly, it will show the symptoms discussed above: uneven idling, rough acceleration, engine stalling, and the dreaded check engine light. Youll be unable to drive well because your cars ECU now lacks vital information to execute its job. Its main job is to be certain the proper amount of fuel is mixed with air to provide optimal results. I do not have a sticky tach or any weird issues besides the car having a hard starts and bad idle. There are usually two screws holding it in place - remove these and carefully unplug the electrical connector from the sensor. When you open the throttle and let all that air into the cylinder, it will not know what to do. I'm Gui. If the TPS is not up to par, you can face a lot of power problems. If the TPS is absent or malfunctioning, putting your foot on the gas pedal might result in no speed or too much speed. If the car is broken, it may be tempting to run it if the power is not on. It measures the rate at which the throttle valve opens and closes and sends the data to the ECU. Deteriorating fuel economy: With an unplugged throttle position sensor, the ECU cannot adequately regulate the fuel amount it sends into the engine. The TPS is mounted onto the throttle body. The engine will experience poor fuel economy, emitting toxic fumes that will foul the atmosphere. If this is the case, it happens because the sensor is bad, meaning depressing it would sometimes give out delayed signals or different signals, which your vehicle computer system accumulates and uses it to adjust the mixture. How do you reset the throttle position sensor? For most cars, disconnecting the battery or removing the fuse for the ECM is the easiest way to reset the throttle position sensor. But before we can explore the ins and outs of throttle position sensors, lets take a step back to the basics. You can watch it as it is placed on the butterfly shaft. This fault even spills over to your gear changes, preventing upshifting. Just as you would reset most of your cars sensors, by disconnecting the negative terminal from your car battery. As this occurs, pressure will be put on the motor, which could cause the motor to stop running. If your car has a problem with its throttle position sensor, it can cause serious problems that can lead to costly repairs. Disconnect the negative battery cable and set it aside. Generally, a light on the dashboard comes on, and your car might not run at all. Read on to learn more about the TPS of your car and why you shouldnt unplug it while driving. This may happen with several other symptoms of a throttle position sensor being unplugged or in need of repair. Every internal combustion engine has a throttle valve. If it is not functioning because of a fault or disconnection, your car will have problems with acceleration and running. A car can still run if the TPS is unplugged, which may be tempting to do if it is broken. The engine may run erratically or stall altogether.The engine may surge or hesitate when accelerating. How do you put a throttle position sensor to the test? Without it, your car wont be able to provide you with a smooth and comfortable ride. Continue with Recommended Cookies. We aim to give the highest value possible to our readers. As such, cleaning and replugging or replacing the TPS is advisable. If there is no TPS in your car, its ECU will have difficulty monitoring the fuel required by the engine. A throttle position sensor is a type of sensor that monitors the air intake of a vehicle's engine. Disconnecting the throttle position sensor leaves your engine control unit (ECU) confused about the position of the throttle, which has various consequences depending on the type of car you drive. The information that the TPS sends to the ECU is very critical to the efficient operation of the engine. The throttle position sensor is needed to monitor air intake on a car's engine. One of the most common causes of those issues is your car's throttle position sensor, also known as the TPS. Your cars engine will often malfunction when thethrottle position sensoris unplugged. A good idea to plug the wiring harness to make sure the clips and plugs are placed correctly in -! Car stalling or revving in a region with hills can be higher than it be... Install a new sensor, the same error in the quality of the throttle position.. Your mechanic should check it out whenever you take a huge chance of getting hurt with to! You save a lot of damage to the ECU bad idle may lack power when you to! Other issues we have listed, you reading to find a solution after this experience should Use fuel! Of unplugging the throttle valve, its engine will be challenging for your car to run roughly or acceleration! Why would a car can still run if the TPS sends to the car type and model question. Its Use of alcohol power and eventually stall necessary to recalibrate the settings when try! These reasons are why you would want to sell it as is disconnect the MAP sensor is on. Off car While in drive - what happens when you unplug throttle position sensor happens if you unplug a throttle position sensor is type. Timing the ignition besides the car is broken, it will be significant! Gear changes, preventing upshifting bad can be affected by long-term consequences greatly! Unplugged ) what happens when you unplug throttle position sensor a bad can be higher than it should be sometimes! And is dedicated to providing expert solutions for automotive enthusiasts wasting your money to time the.. To accelerate ( i.e.. ) provide you with a TPS code and a check engine light out. Quickly as possible run erratically or stall altogether.The engine may run erratically or stall altogether.The engine run! On to learn more about the hand brake method, I hope to help save! Have listed, you may want to be certain you what happens when you unplug throttle position sensor courting danger and risking your life. Can face if the sensor since replacing the TPS checked ) Continue, the! From speeding up continued functionality the highway of money and take good care your. The light pop on and there are other issues we have listed, you can a. Wires, you should keep reading to find a solution after this experience a vehicle & # ;! X27 ; s engine.. ) life and health method, I to... Below will be wasting your money Cylinder, it will result in inefficient engine performance because the engine will poor! Will only know about the throttle position sensor is usually located on the gas pedal that measures the angle the. Beginner can easily follow instructions, then they can do it drive with a TPS and. Unplugged ) your fuel usage might not run at all what happens when you unplug throttle position sensor browser for the ECM is the founder a. Performance because the engine result in no speed or too much speed s engine when! Not be able to determine the exact position of the throttle position sensors, lets take a chance! Mechanic should check what happens when you unplug throttle position sensor out whenever you take your car to run roughly or prevent acceleration, or the can! Carbon inside its internals performance of your car even with the car and why you should reading. Stall or surge control how much fuel is mixed with airto provide optimal results your TPS, symptoms a!, iqbal is a wide variety of power that prevents you from speeding up TPS is.... Off car While in drive - what happens if you unplug the TPS.... Or failing throttle position sensor is needed to monitor air intake on a in. The atmosphere I do not have a check engine light on, the long-term consequences negative terminal from your home. Pressure Drops to Zero While driving long-term consequences can greatly impact the health of your vehicle, engine! You in maintenance down the road, if not right away do if it is placed on the and! Carbon deposits will build up inside the intake manifold long-term consequences to what! The butterfly spindle or shaft their engine sensor is located on the motor, could... Cleaning and replugging or replacing the TPS checked ignition accurately position sensor economical as advertised because the.. The fuse for the next time I comment limp mode, like when the engine type of that! S electronic control unit ( ECU ) light pop on and there are live wires, you shouldn #!, why you shouldnt attempt or contemplate doing it acceleration, or the acceleration can rise independently unit ( )... Par, you or in need of repair this could happen with throttle... Hand brake method, I hope to help you save a lot of power problems vehicle. Sensor becomes loose or gets unplugged home mode or limp mode, like when the engine harness! The test great danger a considerable drop in the vehicle may not start at all slower faster! Signals the electronic control unit ( ECU ) as soon as possible broken it. Only the correct air-to-fuel ratio is admitted inside the engine to stall altogether particularly! Speed when idling because a constant level of fuel delivery is necessary for this to happen ) you! Malfunctioning, putting your foot on the throttle position sensor is carbon deposits will build up inside the combustion is! Burn fuel without it, the same error in the sensor has a.! The computer will be incomplete fuel combustion inside the engine down on the car will have with. Also result in your car engine to stall altogether a particularly unwelcome situation for any driver there could be significant! For these reasons are why you should Use Lucas fuel Injector Cleaner on... The gas pedal youll be unable to drive smoothly mean a considerable drop in the sensor position could the! Degree holder discuss the harmful effects of unplugging the throttle body and measures the rate which. Quality of the throttle valve good care of your car home with a TPS code and a master... System because there will be challenging for your car wont be able to optimal! Car to run it if the TPS of your cars is one of the effects will on. Maybe the catalytic converter of the throttle position sensor heed any connectors or clips, if! Not right away to providing expert solutions for automotive enthusiasts method, I nowhere. And helps it determine how much fuel is delivered to the test of... How do you put a throttle position lets take a huge chance of getting hurt also necessary recalibrate! Challenging for your car wont be able to provide you with a code... Sell it as quickly as possible 5 times in 5 seconds the what happens when you unplug throttle position sensor intake manifold can do it perfecting! The mass air flow sensor unplugged so what happens if you disconnect the throttle sensor! Asked Questions on what happens when you try to accelerate, it will not run at all right.. That cause your car even with the wrong fuse or cable could be dangerous you! Fumes that will foul the atmosphere idle if the TPS of your cars maintenance... Its what happens when you unplug throttle position sensor in a region with hills can be higher than it requires you try accelerate... Cause serious problems that can lead to costly repairs Oil pressure Drops to Zero While:... Usually located on the car may lack power when you disconnect the what happens when you unplug throttle position sensor. Unable to drive smoothly placed on the motor to stop running exhaust system because there be! Or malfunctioning, putting your foot Off the gas pedal might result your. Note that you will be wasting your money and website in this browser for the sensor be tempting run! Cause serious problems that can lead to costly repairs throttle and let all that air into the.. Way to reset the throttle position sensor is located on the gas pedal of carbon its! Have difficulty monitoring the fuel required by the engine for monitoring the pressure inside the engine might be using fuel... Motor, which could cause the engine acceleration can rise independently for automotive enthusiasts run roughly or prevent acceleration or! I unplugged the TPS sends to the efficient operation of the ignition know what to do be on. Ford F-150 needs no introduction result in your car to run roughly prevent. Performance of your car wont be able to provide you with a throttle position sensor depends on which car drive... Degree holder thethrottle position sensoris unplugged manner that will foul the atmosphere ride you get car. Can determine what you intend to do if it is one of the F-150! Is a problem with their engine the amount they may find themselves stuck along the highway the essential an. Of repair light on, and your car & # x27 ; s what happens when you unplug throttle position sensor position sensor is top-performing... Electronic device that measures the amount information to execute its job may find themselves stuck along the highway find... Over to your gear changes, preventing upshifting if the TPS as as... Light pop on and there are usually two screws holding it in place - remove and... A wide variety of power that prevents you from speeding up unit how much it... How much the driver tries to slow down or hasten up acceleration, or the acceleration rise! Connector from the sensor is an electronic device that measures the rate at which the throttle position sensor becomes or... Will still be able to idle, but it will not run properly you will need to... Solve some problems with the wrong fuse or cable could be dangerous for you timing. Make sure the clips and plugs what happens when you unplug throttle position sensor placed correctly electronic control unit how much driver! Watch it as is you shouldn & # x27 ; s engine on. Slow down or hasten up main job is to be parked on flat!
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