One of the telltale signs of throttle position sensor problems is slightly delayed acceleration. Accelerator Pedal Position (APP) sensors A and B are operated via the throttle cable to determine the accelerator opening value when the driver presses the accelerator pedal. Jerking or bucking of the vehicle is the most common symptom of a bad TPS. The throttle position sensor in. contact the author of the presentation. The number of TP sensors may vary depending on your vehicle’s make and model. All of a sudden there was a shudder and no accelerator pedal … However, many drivers have complained about a bad APP sensor in their car. Some cars use both an accelerator pedal position sensor on the pedal and one TPS sensor on the throttle body, while some cars only have a TPS sensor on the throttle body. Enter one or more tags separated With a lab scope an acceleration pedal position sensor is measured with the key turned on and no running engine. P2122, P2127 code - The Electronic Throttle Control (ETC) system uses two Accelerator Pedal Position (APP) Sensors to monitor the accelerator pedal position. Sounds like one of them may be missing. Accelerator Pedal Sensor problem of Chevrolet Impala. What is an Accelerator Pedal Position Sensor? Your car doesn't accelerate over a specific limit. While driving northbound on I-75 in southern ky, the car suddenly lurched a little and "traction control" and "stabilization" errors displayed followed by "reducing power. " Go through the slide to know the symptoms of a bad accelerator pedal position sensor in your Audi A4. The most common symptom is your check engine light. Pulling my 5er back from a 400 mile run, I was in a small town starting up from a traffic light. Here is a more detailed list of the most common symptoms of a bad accelerator pedal position sensor. When the position sensor experiences failure, the car’s computer will not have any idea which gear the driver has selected. To prevent users from facing this, Use HTTPS option. P0122: Throttle position sensor circuit low input. In the old days, there was a wire attached to the gas pedal of your car and it would move accordingly to how you pressed it. Almost every modern car now has a sensor called the TPS and an accelerator pedal position sensor. You can have a bad sensor even without a “check engine” light or trouble code. Based on this information, the load requested by the driver can be implemented immediately. The most common symptoms of a bad throttle position sensor are check engine light, bad engine performance, rough idle, and gear shifting problems. Jerking or buckling of the entire car is one of the more common symptoms of a bad throttle position sensor. The PCM determines ETC motor operation based primarily on input from a pair of throttle position (TP) sensors and a pair of accelerator pedal position (APP) sensors.Pairs of sensors are used as a fail-safe measure. The ability to smoothly accelerate down the road while using an adequate amount of energy is attributed to the accelerator pedal position (APP) sensor. The tiny thing that keeps your car working, often falls prey to regular wear and tear, and therefore must be taken care of. A code scanner can be attached to your car, and the trouble code retrieved. A bad or failing accelerator pedal position sensor can lead to engine jerking, stalling, and uncontrolled acceleration. The most recently reported issues are listed below. If any of these symptoms occur or your car isn’t responding accurately when you press the gas pedal, you should pull over immediately and call a mechanic. The accelerator pedal sensor usually costs between 50$ – 200$. Slide8: WHEN THERE IS A PROBLEM WITH THE APP SENSOR, THEN YOUR AUDI A4’S ABILITY TO ACCELERATE OR DECELERATE WILL GET AFFECTED. Symptoms of a Bad or Failing Throttle/Accelerator Pedal Position ... and SUVs are all equipped with an electronic throttle control system that contains an accelerator pedal position (APP) sensor. However, many drivers have complained about a bad APP sensor in their car. On older non-TAC equipped vehicles, the accelerator pedal did not have any sensors attached to it and was connected via a mechanical cable to the throttle plate in the throttle body.   Modern cars do not have a wire between the accelerator and throttle body; instead, they use an electronic system. The sensor needs 2 5 volt signals to it to work correctly. The engine’s computer has built-in logic that monitors the TPS feedback to make sure it matches up with information sent by other engine sensors. At these RPMs, the engine idles smoothly without shaking and consumes little fuel. What are the symptoms of a bad accelerator pedal sensor? The APP sensor, which is fixed to the throttle body of the 'electronic throttle control system with intelligence' (ETCSi), monitors the position of the throttle pedal. Inicio / Sin categoría / what are the symptoms of a bad accelerator pedal sensor. They help to achieve better gas mileage and a smoother, comfortable, and safe drive. The most common symptom is … What are the symptoms of a bad accelerator pedal sensor? Firefish Grill Mobile. 14 problems related to accelerator pedal sensor have been reported for the 2009 Chevrolet Impala. Dynamic Slide9: THIS IS A SERIOUS SAFETY ISSUE AS YOU ARE GOING TO LOSE THE ABILITY TO CONTROL THE SPEED OF YOUR CAR. What makes diagnosing it tricky is that the bucks and jerks may be completely random and not even occur for some stretches of time. Slide3: THE ACCELERATOR PEDAL POSITION (APP) SENSOR IS AN ADVANCED SYSTEM IN YOUR AUDI A4. However, PCMs rarely go bad, so make sure you double check all of your work before condemning the PCM. Slide16: ILLUMINATION OF THE CHECK ENGINE LIGHT Slide17: THE CHECK ENGINE LIGHT IN YOUR AUDI A4 IS A WARMING SYSTEM THAT ILLUMINAT ES WHEN TROUBLE IS DETECTED IN THE CAR. 1. The result is a smooth and responsive drive. Your symptoms are a dead ringer for a bad engine coolant temperature sensor (ECT). Inicio / Sin categoría / what are the symptoms of a bad accelerator pedal sensor. Check Engine Light comes on Because your bad throttle position sensor is considered part of your car's emission control system, its malfunction is likely to illuminate your Check Engine Light (CEL). In the case of electronic throttle control, this mechanism is controlled electronically, while it also determines the input for other engine components, such as the engine coolant sensor. and, the check engine light came on. Customize Embed, Thumbnail: On this page we will explain the principle according to which modern pedal travel transmitters operate, and which symptoms indicate a fault in this sensor. Slide13: THIS IS GOING TO CAUSE PROBLEMS WITH THE FUEL EFFI CIENCY OF YOUR CAR. Roy Accelerator pedal position sensor is mounted on the accelerator pedal bracket and it has 2 sensors to detects the accelerator position and a malfunction of the accelerator position's own. The AAP sensor is also involved in converting the movement of the accelerator pedal into an electronic signal, which then initiates the opening or closing of the thro… Copy. Really bad gas mileage. The APP sensors 1 and 2 are integrated into one assembly located at the pedal assembly. The tiny thing that keeps your car working, often falls prey to … The plate is connected to the accelerator pedal with a cable connected to a set of linkages. The throttle position sensor detects the position of your gas pedal (sometimes known as accelerator or throttle) and sends its information to your car’s engine control unit. what are the symptoms of a bad acce… Below are five of the most common signs of a bad crankshaft position sensor. These are APP sensor 1 and APP sensor 2. Hesitation when you step on the accelerator pedal. Slide20: THIS WILL SIGNAL THE CHECK ENGINE LIGHT O N TH E DASHBOARD TO ILLUMINATE. I've learned a lot about the accelerator pedal position sensor (APPS) since yesterday when I had my big problem w/ it. Symptoms of a Bad or Failing Throttle Control Cable ... As you press down on the accelerator pedal, ... As this opens and closes, a sensor referred to as a Mass Air Flow Sensor monitors this change in air which relays this information to your car’s ECM, or Electronic Control Module. Watch Out! Firefish Grill Mobile. Accelerator Pedal Position (APP) sensor A and Accelerator Pedal Position (APP) sensor B are potentiometers, and they are installed in the engine compartment. One possible thing that causes this is that the TPS is continuously sending bad readings to the ECU. This symptom is easy to detect as every owner eventually gets familiar with how their car responds to pressing the gas pedal. Slide6: INCONSISTENT ENGINE THROTTLE Slide7: WHENEVER YOU PRESS DOWN ON THE GAS PEDAL, THE ENGINE SHOULD RESPOND DIRECTLY AND INSTANTLY. Here are the Symptoms of a Bad Throttle Position Sensor. There are several symptoms of a bad throttle … If you feel that your car is hesitating to move, your accelerator pedal sensor could be failing. Average repair cost is $280 at 90,000 miles. In such a case, it is advised to pull over immediately and call a mechanic since bad pedal timing can prove to be fatal. The computer is calculating an air/fuel mixture that is too lean. The most common symptoms of a bad accelerator pedal position sensor are unresponsive throttle, check engine light, gear shifting problems, and engine performance problems. Signs of a Bad Accelerator Pedal Position Sensor. This sensor monitors how far down the accelerometer pedal is pushed and gives the output current determining the position of the pedal. The first symptom of a bad oxygen sensor is an illuminating Check Engine Light. If cleaning your throttle position sensor did not result in any improvement to your car's running condition, it is probably time to consider replacing your bad throttle position sensor. If the engine control unit suspects that one of these sensors is broken and sending out a wrong signal – it will light up the check engine light. Slide18: THE ACCELERATOR PEDAL POSITION SENSOR IN YOUR AUDI A4 IS MONITORED BY TH E ECU OF THE CAR. While some of these symptoms could also be signs of other engine issues, watch out for these symptoms of bad TPS, or throttle position sensor. Slide15: IT IS DESIGNED TO TAKE INPUT FROM THE DRIV ER BUT STEADI ES THE APPLICATION OF FUEL PRESSURE. Symptoms Of A Bad APP Sensor. Testing The Resistance Of APP Sensor 1 And 2. The result is the inconsistent power delivery. The throttle position sensor detects the position of your gas pedal (sometimes known as accelerator or throttle) and sends its information to your car’s engine control unit. You do not have the permission to view this presentation. I change the accelerator pedal an that fix the problem. You may not be noticing a delayed response from the pedal, but if you see low gas mileage, it could mean that the car’s throttle position sensor is working but not as accurate as it should be. Slide4: HOWEVER, DRIVERS HAVE OFTEN COMPLAINED ABOUT FACING ISSUES WITH THE APP SENSOR IN THEIR AUDI A4. Accelerator pedal position (APP) sensors , Throttle Position Sensors (TPS) , Throttle Actuators and the Powertrain Control Module work together in a “drive by wire” system to control the engine throttle. Slide21: CONCLUSION Slide22: THE PROPER FUNCTIONING OF THE APP SENSOR IN YOUR AUDI A4 IS CRITICAL FOR TH E SMOOTH RUNNING OF THE CAR. Of course, some symptoms can tell you when a TPS may be bad. The vehicle was a 2010 Chevrolet Impala. The labor cost can range from $50 to $100 at a workshop. Here, this information is used to control the throttle body … A failing accelerator pedal sensor’s impact is pretty much obvious as it directly affects how the car drives and responds to the pedal and gas mileage. APP Sensor Terminal Pin Out Chart. But these symptoms may come from other bad sensors , parts or components. Symptoms of a Bad Throttle Position Sensor. In modern cars, a throttle position sensor is a part of the fuel management system that takes into account the position of the throttle valve. A TPS sensor’s importance can be emphasized as it can affect the gas mileage and engine response. If the check engine light turned on in your car, then it's important to check it out before the issue gets worse. by comma or enter. Most web browsers block content or generate a “mixed content” warning when users access web pages via HTTPS that contain embedded content loaded via HTTP. One such system in your A4 is the accelerator pedal position sensor that controls the speed of your car when you press the accelerator pedal. 6 Symptoms of a Bad Accelerator Pedal Position Sensor, Your car hesitates to move when the gas pedal is pressed, Your car doesn’t accelerate over a specific limit, Your car won’t shift up or jerks upon depressing the pedal. The throttle position sensor in. If your car is only able to accelerate up to a point and won’t go faster beyond that speed, your accelerator pedal sensor is not able to send positioning signals accurately, which causes your car not to speed up beyond a point of pressing the gas pedal. Sounds like one of them may be missing. Instead of mechanical linkage connecting the accelerator pedal to the throttle body, there are accelerator pedal position (APP) sensors that monitor the position of the pedal. These jerks can be experienced during hard acceleration or when under moderate load. The sensor needs 2 5 volt signals to it to work correctly. Symptoms of a bad throttle position sensor. Each sensor has a 5 volt reference circuit, a low reference circuit, and signal circuit. When the Accelerator Pedal Position (APP) Sensor 2 goes bad, you're gonna' see the following symptoms: Check engine light (CEL) will be lit on your instrument cluster. Learn the most common symptoms of a bad throttle position sensor. Depressing it would sometimes give out delayed signals or a burst of varying signals, which your car’s computer tries to accumulate and use to adjust the mixture. Symptoms of a Bad or Failing Throttle Position Sensor Common signs include lacking power when accelerating, rough or slow idle, stalling, inability to shift up, and the Check Engine Light coming on. Among the various luxury cars that one gets to see on the road, the Audi A4 is one of the most popular one. Go through the slide to know the symptoms of a bad accelerator pedal position sensor in your Audi A4. There are generally two operating system types of APPS units that have been used utilised by manufacturers on the Link-less type – Electronic Throttle - Drive by wire system). It senses the position of the throttle valve or butterfly valve and transmits the information to the Engine control unit. Similarly, what are the symptoms of a bad accelerator pedal sensor? If you notice a delay between the time you press on the gas pedal and the time the vehicle actually accelerates, take the car directly to a mechanic. Top 5 Bad Camshaft Position Sensor Symptoms. There are a lot of things that can go wrong in your vehicle if you have a bad camshaft position sensor. One such system in your A4 is the accelerator pedal position sensor that controls the speed of your car when you press the accelerator pedal. Seven problems related to accelerator pedal sensor have been reported for the 2010 Chevrolet Impala. I hope you enjoy my content! Really Bad Advice That Will Serve You Well #PresentationTips, Accelerator Pedal Module Market Driving Factors, Accelerator Pedal Module Market Global Industry Analysis And Opportuni, VERTICAL DETACHABLE TOWBAR FOR AUDI A4 SEDAN, QUATTRO, S-LINE 2007-ON, mlfree.com-Audi A4 B7 2004 2008 POLOVNJAK KVAROVI. The computer then uses that information to adjust the air-fuel mixture and the throttle body valve according to the gas pedal position, current speed, the air temperature, MAF reading, and RPM. Of course, some symptoms can tell you when a TPS may be bad. Hi, I’m Magnus, the owner and the writer of Mechanic Base. by Magnus SellénUpdated: February 19, 2021. Also please check out the statistics and reliability analysis of Chevrolet Impala based on all problems reported for the Impala. To help determining whether an acceleration pedal position sensor is functioning correctly, different possible deviations from the example signal are mentioned along with probable causes. You, therefore, want the best replacement part for it. P0121: Throttle position sensor circuit range/performance problem. Transmission does not shift out of second gear. Just as with the cleaning process, if your throttle position sensor is difficult to access, or you are otherwise not up to tackling this procedure, take your car to a repair shop. Please also check out the statistics and reliability analysis of the 2009 Chevrolet Impala based on all problems reported for the 2009 Impala. Symptoms Of A Bad APP Sensor 2. by … A driver continually depresses the accelerator pedal giving it a varying amount of pressure, which determines how the car moves forward. P2122, P2123, P2125, P2127, P2128, P2138. In such cases, because the sensor is bad. A TP sensor measures your throttle blade opening. On the other hand, vehicles with electronic throttle control (ETC) are equipped with two sensors. I have been working with cars for 10 years, specialized in diagnostics and troubleshooting. Here, this information is used to control the throttle body which forms an integral part of the air intake unit. If your car is unable to idle smoothly, a bad accelerator pedal sensor could be the reason besides the fuel mixture. No power as you accelerate the vehicle. Embed: The accelerator pedal position sensor is located inside of the accelerator pedal. what are the symptoms of a bad accelerator pedal sensor. Roy Accelerator pedal position sensor is mounted on the accelerator pedal bracket and it has 2 sensors to detects the accelerator position and a malfunction of the accelerator position's own. The accelerator pedal sensor transmits the position of the accelerator pedal to the engine control unit. Source: Sauerlaender / Pixabay >> Finding a cheap used car in good conditions here << However, if you are thinking that you can easily detect this one of the abs control module symptoms, then this may not be the case. The most recently reported issues are listed below. © 2014 authorSTREAM. Modern cars have a monitoring system over all the sensors in the car engine. Due to such, the car’s engine will likely fail to start because the computer will probably not know that the transmission is in neutral or park. All rights reserved. Chevrolet Impala owners have reported 34 problems related to accelerator pedal sensor (under the vehicle speed control category). Slide19: IT IS ONE OF THOSE COMPONENTS THAT IS GOING TO TRIGGER AN ERROR CODE IN TH E ECU WHEN AN ISSUE OCCURS. If your check engine light is on, you should definitely check the trouble codes with an automotive scan tool. Flash Your car won't shift up or jerks upon depressing the pedal. The engine doesn't idle smoothly. Slide5: HERE ARE THE SYMPTOMS OF A BAD APP SENSOR IN YOUR AUDI A4 FROM EXPERTS IN ESCONDIDO. If the accelerator pedal sensor fails, the following fault symptoms may occur: Increased engine idling speed; Vehicle does not respond if the accelerator pedal is pressed; Vehicle switches to "limp-home mode" Engine warning light in the cockpit illuminates Slide10: YOU SHOULD PULL YOUR CAR TO A SAFE PLACE OFF THE ROAD & C ONTACT A MECHANIC TO DIAGNOSE YOUR AUDI A4. If not, the PCM is likely the problem and should be replaced. Modern vehicles are equipped with many sensors and computers to automatically and precisely manage basic car controls. While some of these symptoms could also be signs of other engine issues, watch out for these symptoms of bad TPS, or throttle position sensor. Because the throttle position sensor is such an important part of the engine’s performance, it could result in many different symptoms. This cost is also based on the brand desired and additional included features. what are the symptoms of a bad accelerator pedal sensor Copy, Automatically changes to Flash or non-Flash embed, WordPress Embed This guide will discuss the basics of the acceleration pedal position sensor, including how it runs and the symptoms if it ever goes bad. The said information indicating just how deep the pedal … There are many symptoms of a failed throttle position sensor. The signal from the sensor is shown and can be downloaded. However, PCMs rarely go bad, so make sure you double check all of your work before condemning the PCM. If the accelerator pedal sensor isn’t working as it should, it will give out incorrect reading to the car’s automatic transmission computer. This device, which feeds data to the vehicle's computer system and allows it to determine the correct mix of air to fuel for the engine, can either malfunction or receive incorrect information from the throttle components. Your Audi A4 comes equipped with many advanced features that help in the smooth running and better performance of the car. The Check Engine Light illuminates whenever any engine part malfunctions. Symptoms of a Bad or Failing Accelerator Cable | YourMechanic Advice Symptoms of a Bad or Failing Accelerator Cable Common signs include damage to the outer covering, delayed accelerator response time, and problems with cruise control. As you're probably already aware, the accelerator pedal comes equipped with two accelerator pedal position (APP) sensors. Here are the Symptoms of a Bad Throttle Position Sensor. This sensor should not be confused with the Accelerator Pedal Position Sensor (APP sensor), they have a similar goal but are not used for the same purpose. Symptom #8: Weird buckling and jerking of the car . Lack of power when accelerating the engine. Below are several key signs of a bad throttle position sensor. Slide11: FALLING ENGINE EFFICIENCY Slide12: WHEN THE APP SENSOR MALFUNCTIONS, IT IS GOING TO AFFECT THE EFFI CIENCY OF YOUR AUDI’S ENGINE. by David Wooten on I change the accelerator pedal an that fix the problem. Slide24: THANK YOU HTTPS://ESCONDIDOGERMANAUTO.COM/. For example, older vehicles that have mechanical throttle linkage are equipped with only one TP sensor. My Mobile Page Version 3 Template. HTTPS (Hypertext Transfer Protocol Secure) is a protocol used by Web servers to transfer and display Web content securely. Symptoms of a Failed Sensor. Accelerator pedal position (APP) sensors , Throttle Position Sensors (TPS) , Throttle Actuators and the Powertrain Control Module work together in a “drive by wire” system to control the engine throttle. Diagnostic trouble code: P1125: Accelerator Pedal Position (APP) System. Because the throttle position sensor is such an important part of the engine’s performance, it could result in many different symptoms. Your check engine light is on. As the name implies, these sensors are precision devices that determine the position of the accelerator pedal. Since gas pedal sensors come specially equipped for each vehicle, you should make sure you're purchasing the exact accelerator pedal sensor for your car's year, make and model. One of the more frequent problems with modern vehicles is a bad throttle position sensor (TPS). P0123: Throttle position sensor circuit high input. In some cases, it is possible to replace just the sensor – but on other car models, you have to replace the whole accelerator pedal. In most cases when your sensor goes bad, you will see the vehicle consuming more fuel than usual. Your car hesitates to move when the gas pedal is pressed. A vehicle's throttle determines how fast or slow it travels, how it accelerates after turning a corner and how fast it takes off when the gas pedal is pressed. Depending on the vehicle manufacturer, code P2138 can indicate either the car’s two TP sensors don’t agree, or it’s two APP sensors don’t agree. The optimal RPM of a car engine is around 600 to 700 rotations per minute. Symptoms of a bad abs control module. The cost differs a lot depending on if you can replace just the position sensor or, like in some car models – you have to replace the whole accelerator pedal, which makes it much more expensive. Expect a total of 100$ to 300$ for replacing the accelerator pedal position sensor. The most recently reported issues are listed below. This cost is also based on the brand desired and additional included features. TP Sensors . Top 5 bad throttle position sensor (TPS) symptoms. Remember that you sometimes have to calibrate the new accelerator pedal position sensor, which can only be done with a diagnostic tool. 1. Slide23: TAKE YOUR AUDI A4 TO A CERTIFIED REPAIR SHOP FOR FIXI NG TH E ISSUES WITH THE APP SENSOR. This sensor is usually mounted on the throttle body. Home; Uncategorized; bad accelerator pedal position sensor symptoms Below are five common signs which will indicate a faulty camshaft position sensor. Delayed Acceleration. Slide14: THE SENSOR MONITORS THE THROTTLE PRESSURE TO THE THROTTL E BODY & ALSO STABIL IZES THROTTLE CONTROL. What Are the Symptoms Of A Bad Automatic Transmission Position Sensor? Watch Out! The throttle position sensor plays an important role in a car or truck's overall performance. Menu Close In this article I'll explain how a throttle position sensor works, the symptoms of a bad throttle position sensor and how to diagnose and fix a … Here is a more detailed list of the most common symptoms of a bad accelerator pedal position sensor. 1. Accelerator Pedal Position Sensor Location, Accelerator Pedal Position Sensor Replacement Cost, 6 Symptoms of a bad Accelerator Pedal Position Sensor & Replacement Cost, 5 Symptoms of a Bad Throttle Position Sensor (TPS) &…, 6 Symptoms of a Bad Camshaft Position Sensor,…, Crankshaft Position Sensor Symptoms, Function & Location, P0123 - Throttle Position Sensor/Switch A Circuit High Input, P0340 Code: Camshaft Position Sensor - Circuit Malfunction, P0344 Code: Camshaft Position Sensor - Intermittent, Your Car hesitates to move when the gas pedal is pressed. The 2010 Nissan Versa has 1 problems reported for accelerator pedal sensor faulty. But these symptoms may come from other bad sensors , parts or components. Your car’s throttle position sensor is often at its failing stage, but the effects aren’t obvious to you. Your brake pedal will become unresponsive with time, slowly and steadily. 1. 2002, 2003 4.2L Chevrolet TrailBlazer And GMC Envoy. When the accelerator pedal is pressed, it causes rotation of the throttle plate. The most common symptoms of a bad throttle position sensor are check engine light, bad engine performance, rough idle, and gear shifting problems. A malfunctioning throttle position sensor will relay bad data to your car's computer and usually result in poor fuel economy. Numeric tags are not allowed. That’s why pumping the gas pedal keeps your engine running. bad accelerator pedal position sensor symptoms. The throttle position sensor in your engine transmits information about the position of your throttle to the electronic control module or ECM. Symptoms of a Failed Sensor There are many symptoms of a failed throttle position sensor. Accelerator Pedal Position Sensors (APPS) What the Technician needs to know about the Accelerator pedal position sensors on a Drive by wire system. what are the symptoms of a bad accelerator pedal sensor. In most cases when your sensor goes bad, you will see the vehicle consuming more fuel than usual Warning lights: The check engine light is designed to warn you when any sensor goes bad. Top 5 bad throttle position sensor (TPS) symptoms. You will know when these problems present themselves because the symptoms will become very apparent. 1) Irregular Stalling The crankshaft position sensor is comprised of numerous wires which run to the engine control module and crankshaft. How to adjust EZGO inductive throttle sensor (ITS) One major problem that you’re likely to face if the inductive throttle sensor isn’t adjusted properly is with respect to acceleration. Once you recognize two or more of these, you can then take your vehicle to a mechanic knowing the culprit may simply be the sensor. The CEL might flash, or it may remain illuminated. If not, the PCM is likely the problem and should be replaced. When it goes bad or out of adjustment, it isn’t possible to adjust the speed of the cart. One of the more frequent problems with modern vehicles is a bad throttle position sensor (TPS). Please also check out the statistics and reliability analysis of the 2010 Chevrolet Impala based … You should always contact an auto mechanic whenever you have an illuminating Check Engine Light for inspection because the light turns on for many different reasons. My Mobile Page Version 3 Template. The TPS sensor and the accelerator pedal sensor tracks the gas pedal’s movement, which sends signals to the car’s computer.