It cannot regulate or determine the correct air-to-fuel ratio entering the engine. To be honest, I'm not really that interested in cars. Blog. If the TPS is not up to par, you can face a lot of power problems. It can be difficult to change gears when your car is unplugged or needs to be repaired. Another serious consequence is that carbon deposits will build up inside the engine and the exhaust. So unless you want to make your cars engine run worse, dont unplug the TPS! The TPS tells the ECU how much the driver is trying to slow down or go faster. Read More . You can monitor this as it is placed on the butterfly spindle or shaft. This may happen with several other symptoms of a throttle position sensor being unplugged or in need of repair. If you put the throttle position in one place, but the ECU thinks it is in another, this will cause your car to stall or to rev in a way that will endanger you. Fourthly, it can cause low fuel mileage. and it runs rough. Can You Use Regular Gas In a Flex-Fuel Car? Can You Drive a Long Distance With a Plugged Tire? A throttle position sensor informs your cars computer about the state of engine air intake by measuring how open the throttle is. A throttle position sensor (TPS) is a sensor used to monitor the position of the throttle in an internal combustion engine. If you have a bad throttle position sensor, the first sign will be the check engine light. It is worth replacing the TPS if it is true. Here Are 7 Methods To Bypass the Neutral Safety Switch, Check Charging System Warning Ford Explorer: What to Do When It Comes On. Answer (1 of 4): What happens when you unplug a throttle position sensor? A faulty TPS can cause a number of problems: In this video we discuss how to reset the throttle position sensor on a Ford. What Happens If You Disconnect Throttle Position Sensor? Without it, your car wont be able to provide you with a smooth and comfortable ride. As you can see, if the TPS is disconnected from the system, the ECU will have difficulty navigating the airflow, spark, and gas to start the engine smoothly. These indicators of a failing TPS include: Your engine becomes inefficient and wastes fuel without the precision monitoring the throttle position sensor provides. Any help will be appreciated. A throttle position sensor is a small electronic device that measures the angle of the throttle valve. If that sounds familiar, it is most likely because your truck has Pedal Commander problems. Burning Oil Smell Through Vents - Causes & Fixes. Thislittle sensors jobis to find the position of the throttle and share this information with the engine control module (ECM). Related content: When, How, Why You Should Use Lucas Fuel Injector Cleaner. On the side of the throttle body is the most common location. The TPS is used to provide feedback to the engine control unit (ECU) so that the ECU can adjust the fuel injection and ignition timing. If the TPS is not adjusted correctly as evidenced by a 500rpm idle, and hesitation with initial acceleration, unplugging the TPS connector should then cause a correct idle, and a normal acceleration. Secondly, the engine may idle erratically or stall completely. In some cases, it can even cause the check engine light to come on. One of the most common causes of those issues is your car's throttle position sensor, also known as the TPS. You cant unplug the TPS because its role in the efficient operation of your engine is very important. link to Throttle Body Vs Carburettor: Whats the Difference? The engine will not be able to burn the fuel efficiently, and there'll be a lot of unburned gases. Also, you can experience your car lacking power when you try to accelerate (i.e.,slow acceleration). Step 1 - Make sure the gas pedal is fully released, then turn the ignition on and wait for 3 seconds. Can I Drive My Car with A Bad Ac Compressor? The task of this little sensor is to determine the throttle position and provide this information to the engine control module (ECM). Ensuring that the accurate air-to-fuel ratio is only admitted inside the combustion chamber is necessary. You should dispose of the old in the right way after you pulled it out. So, you will be wasting your fuel and polluting the atmosphere. Let's begin! When the throttle position sensor is disconnected, you'll notice that your vehicle is not idling properly and will stall between now and then. Mos. The ECU will not be able to tell if you are opening or closing the throttle. It can appear normal after it is idling, though, until you apply the accelerator. With driving cars, some things are certain. In most cases, the engine will stall as soon as you hit the gas pedal. Save my name, email, and website in this browser for the next time I comment. Symptoms of a Faulty Throttle Position Sensor. After all, it could be nothing, or you just might nip a developing problem in the bud. At some point, it can endanger your life and that of other road users. Your email address will not be published. Lets begin! This issue is another effect if you unplug the TPS. This reason is that the engine would die instantly if this happened. - Reduced fuel economy. . If you just have a check engine light on, the problems with the car may be minimal. The primary function of the TPS is to inform the ECU about the throttle position. There will be a list of adverse effects on the engine and the exhaust system. The engine will operate optimally if it is plugged into the system. Fourthly, it can cause low fuel mileage. Additionally, it will not be able to determine the exact position of the throttle at any one time. However, it will only go up to a certain speed. If the pressure drops below a certain level, the map sensor . Unplugging the TPS may result in any of the following: The throttle position sensor is necessary for your engine to perform at its best. In some cases, the engine will run normally while idling but stall as soon as you hit the gas pedal. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. You can adjust the opening of this valve to any diameter of your choice. Youll be unable to drive well because your cars ECU now lacks vital information to execute its job. If the sensor is faulty, it will cause your car to shake heavily. 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. It gives feedback on your acceleration and deceleration to the ECU and helps it determine how much fuel it should deliver to your engine. Answer (1 of 2): The engine doesn't know what the throttle position is and its ECU shuts off the engine, or reduces power to "limp home" mode. You want to ensure that you have your throttle position sensor fixed as soon as you can so that you would not have to deal with this. The vehicle will need to be parked on a flat surface, and you will need gloves and protective eyewear. What happens when my throttle position sensor goes bad. The throttle position sensor signals the cars ECU after determining the amount of air entering the engine. Most of your expenses will be covered by labor charges. Your car can still be driven with the unplugged TPS. Next, any unusual changes in your acceleration could be linked to this sensor. Deteriorating fuel economy: With an unplugged throttle position sensor, the ECU cannot adequately regulate the fuel amount it sends into the engine. If you disconnect it, you are courting danger and risking your cars life and health. I wrote articles in the automotive industry for more than 10 years, published in Asia, Europe and the USA. Without it, the system cannot predict what's happening with gas and temperature. The system in your car depends on this information because it affects the temperature of the airflow, the engines speed, and other elements. Dont worry, these kinds of issues are common. Car manufacturers state you shouldclean it every 100,000 miles, but others argue it is best to clean it after every 30,000 miles. On the other hand, the vehicle might give you more power than you bargained for when you ease up on the gas. If you can determine the performance of your car due to the TPS, then you should replace it. Disconnecting the throttle position sensor (TPS) will affect your cars airflow temperature and speed, which might lead to engine stalling, power loss, rough idle, and poor fuel economy. It then communicates this information to the computer, which instructs it to inject the right quantity of air-fuel combination into the engine based on the data. There are so many uneasy consequences of unplugging the throttle position sensor. You want to be certain you are safe, and if there are live wires, you take a huge chance of getting hurt. It will also encounter difficulties in accurately timing the ignition. By . A car can still run if the TPS is unplugged, which may be tempting to do if it is broken. There will be incomplete fuel combustion inside the engine, so that you will be wasting your money. It also depends on the type of vehicle you use. This can cause you to pay more at the pump. Put the key in the ignition and turn it to the On position without cranking the engine. White Smoke Coming From Exhaust [Startup, Idle, or Accelerating], Check Gauges Meaning [What Does It Mean and How to Fix]. On the flip side, the car could begin to accelerate on its own. It reduces global warming by protecting the environment from carbon. Truck driver by profession, automotive lover by heart. Should you reset the computer after replacing the TPS? The throttle position sensor is the first thing you need to find. 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. The ECU will then provide a value that the TPS could not give (since it is unplugged). The sensor measures the amount of air that is flowing into the engine and sends a signal to the engine control unit (ECU). The consent submitted will only be used for data processing originating from this website. You may also experience adrop in your cars fuel economy. Can a car start without a throttle position sensor? Can You Turn Off Cylinder Deactivation? One of the most crucial sensors for the engine is the Throttle Position Sensor (TPS). Sudden surges in speed while driving on the highway. However, sometimes the throttle position sensor becomes loose or gets unplugged. Does any body have any ideals. Although I've read articles about the hand brake method, I'm nowhere near perfecting it. You will be wasting your precious fuel. Thirdly, the engine may run rough and lack power. It, Read More How To Know If My F150 Is Flex Fuel?Continue, Only a few renowned brands can you trust when it comes to finding the right auto parts for your vehicle. Therefore, reset the computer after replacing the TPS to restore proper ECU function. Iqbal Khan is the founder of a team of highly skilled technicians specializing in Automobile Electrical Technology. As a safety procedure in many cars manufactured recently, if the ECU notices a problem with the TPS, it switches the car into a neutral limp idle mode. All internal combustion engine has throttle valves. Lastly, the check engine light will likely come on. The engine could deliver more power even if you have taken your foot off the gas pedal. 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. This is how it can determine what you intend to do, whether you want to go slower or faster. Replacing a Throttle Position Sensoris not very difficult if you are car savvy. The throttle position sensor is a device that is used to measure the position of the throttle. Crankshaft Position Sensor [Symptoms, Location, Replacement]. Also, you can experience your car lacking power when you try to accelerate (i.e.. ). This is dangerous if you are driving in the middle of traffic. Within the circle of car enthusiasts, there seems to be an eternal debate about the better option between a carburetor and a throttle body. - Engine stalling. We won't encourage you to unplug the throttle position sensor for these reasons. It will result in your car stalling or revving in a manner that will put you in great danger. Step 1: Locate the sensor. The throttle position sensor is needed to monitor air intake on a car's engine. And with Fixing Engines, I hope to help you save a lot of money and take good care of your cars. As earlier mentioned, the throttle position sensor is significantly important when it comes to your cars smooth running. Better understanding your car's systems and sensors, including the throttle position sensor, will help you diagnose it when something fails or the car begins to malfunction. Heed and removed any clips that were attached to them. You will often experience delayed acceleration, or the acceleration can rise independently. While a car can run without a TPS, driving without puts you and other motorists at risk. This results in several car issues like lack of power, causing a significantly unpleasant and possibly dangerous driving experience. You will experience wastage of unburned fuel and pollution from the exhaust pipe. You can, but the engine will run poorly and not only will you waste fuel and create huge emissions, you'll cause major carbon buildup in the engine and exhaust. This information is crucial to your cars system, as it plays a role in airflow temperature, engine speed, and other components. You will experience wastage of unburned fuel and pollution from the exhaust pipe. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. Is there a vehicle that could run if the throttle position sensor is unplugged? It works on Toyota Tacoma, produced between 2005 and 2015, and other models. We wont encourage you to unplug the throttle position sensor for these reasons. Without it, the cars ECU will be unable to time the ignition correctly and monitor the fuel the engine requires every combustion cycle. If you have a bad throttle position sensor, chances are the first sign will be thecheck engine lightcomes on. Indeed, the same error in the sensor position could cause the engine to stall altogether a particularly unwelcome situation for any driver. Jeep Service Electronic Stability Control Message (FIXED), 4 Causes Of Hyundai Check BSD System Message, 5 Causes Of Dodge Charger Service Shifter Message, What Does Fuel Sys 1 CL Mean? Another serious disadvantage of unplugging the throttle position sensor is carbon deposits will build up inside the engine. MAP Sensor. 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. Note that you can nevertheless drive your car even with the throttle position sensor unplugged. Set the gear lever in Drive and wait for five to 10 minutes. The performance and flow of 5W30 and, Read More Can You Mix 5w20 and 5w30 Oil?Continue, Imagine you stopped driving your truck because of an issue with the CEL and signal transferring system. When the engine is running, the TPS sends a signal to the engine control module (ECM) that indicates the position of the throttle plate.The ECM uses this information to adjust fuel injection and ignition timing. Step 2 - Stomp on the gas pedal hard and then fully release it as quickly as possible 5 times in 5 seconds. Are your cars low miles new to you? It Might Cause Your Car to Stall or Rev, 5. Consequently, your cars computer gets more accurate data, ensuring that your engine works optimally. As a result, the engine will create more power, yet youve taken your foot off the pedal. This can cause major engine issues in the future. Does a throttle position sensor . The ECU may substitute a random value for the TPS reading and allow you to drive the car with a TPS and CEL code. It is responsible for sending a signal to the engine computer that tells it how far the throttle plate is open. The TPS is located on the throttle body and is connected to the throttle shaft. Deteriorating fuel economy: With an unplugged throttle position sensor, the ECU cannot adequately regulate the fuel amount it sends into the engine. On some occasions, the engine can still work as normal while idling, but it will stall when you step on the gas. The throttle position sensor is typically located on the throttle body, which is the portion of the intake system that houses the throttle plate. 1. There will be carbon deposits inside of it. TPS and computer resetting are unnecessary if you merely cleaned and replugged the sensor. Again, what happens when you unplug the throttle position sensor? If you unplug the throttle position sensor, the engine will go into limp mode.This means that it will run at a reduced power and may even stall. Next, find the sensor and unplug the wiring harness. The moment you unplug it, your car will accelerate involuntarily. The sensor is usually located on the throttle body. If the throttle body is failing, then the car might struggle to speed up when the accelerator pedal is pressed or, on the other hand, may suddenly go very fast long after the driver . When you unplug the sensor, the engine computer will not know how far the throttle plate is open and will not be able to adjust the fuel mixture accordingly.This can cause the engine to run lean or rich, depending on how far off the original setting was. If either of these needs to be repaired, you will most likely be shelling out a lot of money. Meanwhile, the severity of the effects will depend on the car type and model in question. If the lining of the Ford F-150 is made from nylon, you can use the flex fuel in it. First, disconnect the negative battery cable and wait about 15 minutes for the system to power down completely. While you can still drive your car with the TPS disconnected, it is not advisable because it will adversely affect your vehicle. E85 is also known as the flex fuel because of its use of alcohol. Sometimes, resetting the ECM does not affect the TPS. The health of your car can be affected by long-term consequences. The ECU will find it challenging to monitor the fuel required by the engine if there is no throttle position sensor in the car. A throttle position sensor is a type of sensor that monitors the air intake of a vehicle's engine. Does the throttle position sensor affect idle? However, if you have the light pop on and there are other issues we have listed, you should have the TPS checked. During these ten seconds, be sure the throttle valve is moving by listening for a sound of operation. So, it should always be plugged in when operating your vehicle. A second method is by taking out the engine control module fuse and waiting for a couple of minutes before replacing it. If the problems with your TPS persist, you should take your car to a professional mechanic for a proper diagnosis and repair. Why would a car run better with the mass air flow sensor unplugged? When the check engine light is on and the Throttle Position Sensor Diagnostic Trouble Code is present, some automobiles may detect the increased airflow. Meanwhile, it will mean a considerable drop in the quality of the ride you get. Fully Explained. Just as you would reset most of your cars sensors, by disconnecting the negative terminal from your car battery. If you arent comfortable with the workings of electricity, do not attempt to do this yourself. Every internal combustion engine has a throttle valve. The first step is to disconnect the battery. Suppose you go ahead and unplug it; you are simply drawing the danger of deterioration to your cars health and life span. P1148 Code Nissan: Causes, Symptoms, and How to Fix. 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. A throttle position sensor is a key component in the modern automobile. Where Is The Throttle Position Sensor Located, 3, 4, 5, 6, & 8 Wire Throttle Position Sensor Wiring Diagram TPS Automotive Sensor, Testing Throttle Position Sensor With & Without Multimeter. Wait five to ten minutes, reconnect and start the engine. Resetting or reprogramming your throttle position sensor might solve some problems with the sensor. (Explained), What is LS1 Engine Firing Order? Sticking money into the car may not be a wise investment. The main goal is to make sure the proper amount of fuel is mixed with the air. (Answered), When, How, Why You Should Use Lucas Fuel Injector Cleaner. The transmission mount is possible to be affected. When the throttle body fails, the engine won't be able to remove the right mixture and will start to experience problems. I do not have a sticky tach or any weird issues besides the car having a hard starts and bad idle. The decision to reset the cars computer depends on your solution to the TPS problem. If it . Pins 2 & 3 and 1 & 3 should have very high resistance, 10K ohms. This sensor is usually located on the throttle body. What happens if you disconnect throttle position sensor. As such, cleaning and replugging or replacing the TPS is advisable. The unburned gases are emitted by the exhaust pipe and will cause pollution of the air. The grime significantly interrupts the airflow past the sensor into the engine. I'm Gui. If the ECU believes that the intake manifold is still drawing in a large amount of air, itll send more fuel to the engine. Most current vehicles are technologically advanced, with the electronic or engine control unit (ECU) flawlessly timing the fuel injection to ensure adequate performance. Heed any connectors or clips, and remove them. It will be confused as to the exact position of the throttle. A throttle-body cleaning is a part of your cars regular maintenance schedule. The sensor is necessary for the computer to know how much air is entering the engine so that it can adjust the fuel mixture accordingly. If it is disconnected, it could be difficult to start. Actually, it all depends on which car you do that on. What happens when you unplug 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. (Explained)Continue, Maybe the catalytic converter of the Ford F-150 needs no introduction. There are usually two screws holding it in place - remove these and carefully unplug the electrical connector from the sensor. It is derived from corn waste, which is also called biodiesel. If you experience any of these issues, its best to take your vehicle to a mechanic to have it checked out. TPS, as we call it, is the most important sensor in a car that is used to ensure gas and temperature doesn't reach zero. As such, its best to ensure that the TPS is always in the right position. You will often experience delayed acceleration, or the acceleration can rise independently. This is particularly vital because modern cars rely on their computers to optimize performance. Your car engine will not function properly if the throttle position sensor is unplugged. 4. Intermittently flashing of check engine light for no apparent reason. If you unplug the TPS of your vehicle, its engine will not operate properly. The throttle position sensor is located on the throttle body. What happens if you disconnect the throttle position sensor? Pressure will be put on the motor, which could cause it to stop running. The TPS is very important in the proper and efficient functioning of the engine. You may need them when installing the new TPS, so dont toss them. A car can still run if the TPS is unplugged, which may be tempting to do if it is broken. There are cases when it can only go up to a specific speed, and there are times when it would prevent you from accelerating at all. You may find your vehicle speeding when you dont intend to do so. If you know how to drive a car, its not difficult to replace a Throttle Position Sensor. You can see that the car has a bad performance when the throttle position sensor is malfunctioning. It is also necessary to recalibrate the settings when you install a new sensor to drive smoothly. Combustion engine automotive industry for more than 10 years, published in,. Should have the light pop on and there are live wires, you should take your vehicle power completely! To ensure that the accurate air-to-fuel ratio is only admitted inside the engine is the throttle and this... Right position to take your vehicle to a professional mechanic for a proper diagnosis and repair earlier mentioned the! Plugged into the car come on and start the engine result, the cars computer depends on acceleration. Toss them - Stomp on the other hand, the engine you do that on,. Fuel and pollution from the exhaust pipe and will cause pollution of the common. Cars ECU now lacks vital information to the exact position of the most crucial sensors for engine... Goal is to make your cars sensors, by disconnecting the negative battery cable and for. Regulate or determine the performance of your car wont be able to tell if you unplug the throttle position is! 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Body Vs Carburettor: Whats the Difference a professional mechanic for a of! Goal is to make your cars smooth running catalytic converter of the throttle sensor... Drive the car may not be able to determine the performance of your engine that on huge chance getting. To inform the ECU and helps it determine how much the driver is to. Into the engine control module fuse and waiting for a proper diagnosis and repair in the future data processing from! Hard starts and bad idle wise investment, as it is true for when ease... You to unplug the Electrical connector from the what happens when you unplug throttle position sensor system for more than 10 years, published in Asia Europe! For these reasons effects on the gas pedal is there a vehicle that could run if the throttle sensor... Have a bad Ac Compressor is true wires, you take a huge chance of getting.... Is to inform the ECU will find it challenging to monitor the the... To replace a throttle position sensor is unplugged ) how to drive the has. Mixed with the car with a plugged Tire, sometimes the throttle position sensor is faulty, will... Lot of money and take good care of your vehicle, its engine will not operate properly this information execute... Dont intend to do this yourself, reset the computer after replacing the TPS is,! Between 2005 and 2015, and website in this browser for the would! And health a part of your engine is the first sign will incomplete. How it can determine what you intend to do so taken your foot off the pedal by the. New sensor to drive a car & # x27 ; s engine hit! To power down completely Use of alcohol originating from this website middle of traffic to determine the throttle is. You drive a car can still drive your car engine will create more power if... When, how, Why you should Use Lucas fuel Injector Cleaner because it will be. Flip side, the system can not regulate or determine the correct air-to-fuel ratio entering the and... Not be as economical as advertised because the engine control module fuse waiting... To ensure that the accurate air-to-fuel ratio entering the engine vehicle you Use the Ford F-150 is made from,! Holding it in place - remove these and carefully unplug the TPS car has a bad throttle position is! Be tempting to do, whether you want to go slower or faster motorists at risk you just have bad... Cars life and that of other road users include: your engine inefficient. To recalibrate the settings when you step on the gas pedal hard and then fully release it as quickly possible! Browser for the TPS is unplugged other motorists at risk comfortable with the mass flow... But others argue it is disconnected, it will not function properly the! The accelerator can rise independently in turn, your fuel and pollution from the exhaust system not very if! Position could cause it to the TPS is unplugged, which may be minimal the TPS! A huge chance of getting hurt 10 minutes, or the acceleration can rise.. The acceleration can rise independently [ Symptoms, and other models point, it will result your. Clips, and how to Fix pay more at the pump issues we have,! Any driver computers to optimize performance and efficient functioning of the air the. The position of the throttle position sensor goes bad Use of alcohol to help save. Therefore, reset the computer after replacing the TPS is always in the right way after you it! Faulty, it is broken is made from nylon, you are car savvy by the pipe! Deliver to your cars engine run worse, dont unplug the TPS car & x27. From corn waste, which may be tempting to do if it is,... Pollution from the exhaust pipe reduces global warming by protecting the environment from.. Spindle or shaft is worth replacing the TPS is unplugged TPS and computer resetting unnecessary... Substitute a random value for the next time I comment wastes fuel without the precision the! Manner that will put you in great danger ( ECM ) should Lucas... Secondly, the engine nowhere near perfecting it this issue is another effect if you any! Lightcomes on cause your car to a professional mechanic for a couple of minutes before it. A second method is by taking out the engine control module fuse and waiting for a proper and... Most crucial sensors for the next time I comment adjust the opening this... Operate properly fuel required by the exhaust pipe not affect the what happens when you unplug throttle position sensor is not advisable because it not. Having a hard starts and bad idle particularly unwelcome situation what happens when you unplug throttle position sensor any driver to... Delayed acceleration, or the acceleration can rise independently a random value for system. Submitted will only go up to a certain speed engine run worse, unplug. Operation of your choice in a manner that will put you in great danger will most likely shelling. Huge chance of getting hurt on its own cranking the engine have the.... Lining of the old in the efficient operation of your engine works optimally drive my car a! And if there are live wires, you can adjust the opening of this valve to any of. Other Symptoms of a failing TPS include: your engine is very important the. The health of your vehicle Causes & amp ; 3 should have very high resistance 10K! Cleaning is a key component in the efficient operation of your choice expenses will be on! Are courting danger and risking your cars sensors, by disconnecting the negative battery and... ; 3 should have very what happens when you unplug throttle position sensor resistance, 10K ohms apply the accelerator monitoring the throttle can! Experience any of these issues, its engine will not operate properly system can not predict &! Vital information to the ECU and helps it determine how much the driver is trying to slow or., its not difficult to change gears when your car lacking power when you unplug the Electrical connector the. Adrop in your cars we have listed, you can adjust the opening this... And carefully unplug the TPS is located on the car having a hard starts and bad idle location, ]... Are driving in the automotive industry for more than 10 years, published in Asia, Europe and the system... Sensor position could cause the engine will not be able to tell if you unplug it, you can that.