5 Signs You Need to Replace Your P2135 Throttle Position Sensor

AvatarByCarl Frisch

The P2135 Throttle Position Sensor (TPS) is a sensor that is used to measure the position of the throttle plate inside the throttle body of an internal combustion engine. It provides feedback to the engine control module (ECM) regarding the amount of air entering into the engine so that it can adjust fuel delivery accordingly. The P2135 TPS is usually located on or near the throttle body and consists of two potentiometers, one for the accelerator and another for idle. The ECM uses these signals to calculate airflow through the throttle body and generate a signal to control fuel injection. This helps ensure optimum fuel efficiency and performance from the engine.

Definition, Function and Types of the Throttle Position Sensor (TPS)



The throttle position sensor (TPS) is a critical component of an automotive engine. It measures the amount of pressure applied to the throttle plate, which is directly related to how much air is being drawn into the engine. The data from the TPS is used by the car’s computer to adjust fuel delivery and other parameters for optimal performance.

There are two main types of TPS: variable resistor and potentiometer-style. The variable resistor type works by measuring changes in resistance as it is moved by the throttle plate. The potentiometer-style TPS works by measuring changes in voltage as it is moved by the throttle plate. Both types work in a similar fashion, with the data they provide being used to control fuel delivery, ignition timing, and other engine parameters.

The function of a TPS is to measure the amount of pressure applied to the throttle plate and send this information to the car’s computer for processing. This allows for more precise control over fuel delivery, ignition timing, and other engine parameters that affect performance and emissions. In addition, it can also be used to detect misfires or other problems with an engine’s operation that could lead to reduced performance or more serious damage if left unchecked.

Symptoms of a Faulty TPS



A faulty TPS can cause several problems with an automobile’s performance including poor acceleration, stalling or rough idle, inconsistent power output during acceleration, decreased fuel efficiency and even increased emissions levels due to incorrect air-fuel mixture ratios. Additionally, an illuminated check engine light may indicate a faulty TPS as well as other potential causes such as a worn spark plug or vacuum line leak.

Testing the TPS



Testing for a faulty TPS requires using either an ohmmeter or multimeter set on its lowest ohms setting (usually 20Ω). When testing for continuity between pins on a potentiometer-style TPS (such as P2135 throttle position sensor), one should always start with pin 1 and move sequentially up through each pin until all pins have been tested for continuity using both ends of each pin connection on either side of each pin connection point on both sides of the connector wheelbase (the base that connects all pins together).

If continuity cannot be established between any two pins on either side of each pin connection point then this indicates that there may be an issue with either wiring or components inside the throttle position sensor itself which will need further inspection/repair before being able to determine if it needs replacing entirely or just repaired/replaced components inside it can fix any issues experienced due to its faultiness.

Replacing a Throttle Position Sensor (TPS)



Replacing a throttle position sensor (TPS) is an important maintenance procedure for any automobile. The TPS is a component of the vehicle’s electronic control system, and its failure can cause serious problems with engine operation. When the TPS fails, it may cause the engine to hesitate or even stall.

Preparing for the replacement of the TPS involves several steps. First, the vehicle must be properly supported so that it is stable during the repair process. Next, all necessary tools and materials should be gathered, including new replacement parts, lubricants, and hand tools as needed. Additionally, it is important to disconnect the battery before beginning work on any electrical component in a vehicle.

The first step in replacing a TPS is to remove the old one from its mounting location. This requires locating the TPS on its bracket or mount and disconnecting its electrical connection to the control unit or ECU/PCM. Once disconnected, the bolts and fasteners securing it should be removed so that it can be taken out of place.

After removing the old TPS, install a new one in its place. This requires connecting its electrical connector to ensure proper communication with ECU/PCM and tightening any fasteners used to secure it in place. Once properly secured, check for proper operation by resetting ECU/PCM and verifying system operation through diagnostic testing for error codes or other issues before proceeding with any further testing or adjustments as needed such as readjustment or tuning if necessary..

Finally, after installing a new TPS and verifying proper operation through diagnostic testing, it is important to perform a final road test to ensure that all components are functioning properly and that no additional issues have arisen during installation of the new part. If any issues are found during this process they should be addressed before driving further with the vehicle on public roads or highways.

Troubleshooting Tips for Automotive Throttle Position Sensors (TPS)



When troubleshooting automotive throttle position sensors (TPS), there are some key points to consider in order to accurately diagnose and repair any problems that may arise with this component of an automobile’s electronic control system. The first step is always to check for power at both sides of the connector by using an appropriate multimeter set on voltage setting mode where applicable; this will help determine if there is power being supplied from ECU/PCM side of things or not which can help pinpoint source of issue if there indeed is no power being supplied at all by ECU/PCM side itself which could then point towards faulty wiring harness not sending power correctly due to pinched wires etc., as well as check output voltage itself when applied voltage at input side since output voltage itself must match input voltage when measuring resistance across terminals in order get accurate readings on multimeter set accordingly indicating proper functioning state within range specified by manufacturer’s specification sheet given part number used etc..

Next step would then involve inspecting wiring harness itself making sure all connections are intact without any broken wire strands sticking out anywhere; this helps prevent possible short circuits occurring due faulty wiring harness causing unneeded strain on car’s main power supply potentially leading other secondary electrical components like fuel injectors failing prematurely from added stress put upon them due poor electrical grounds caused faulty wiring harness connections etc.. Additionally checking vacuum lines running into intake manifold near throttle body area making sure air flow from intake manifold into throttle body itself remains constant throughout entire rpm range without fluctuating erratically which could point towards issue with vacuum line leak causing unneeded strain on car’s main power supply potentially leading other secondary electrical components like fuel injectors failing prematurely from added stress put upon them due lack of sufficient vacuum pressure needed provide optimal engine performance levels required keep everything running efficiently day-to-day basis etc..
Finally checking actual throttle plate itself ensuring free movement without sticking when pressing down accelerator pedal manually while keeping engine idling stationary making sure plate opens up completely fully when pressed down hard enough otherwise this could mean some sort internal fault slowing down actual plate movement over time need replacing altogether order keep everything running smoothly future reference etc..

FAQ & Answers



Q: What is a Throttle Position Sensor (TPS)?
A: The throttle position sensor (TPS) is an electronic component that measures the amount of throttle opening and sends a signal to the engine control unit (ECU). It is usually located at the end of the throttle body and is used as part of the fuel injection system.

Q: How does a Throttle Position Sensor work?
A: The TPS works by measuring the amount of air entering the engine. When the accelerator pedal is pressed, it opens the butterfly valve in the throttle body, allowing more air to enter. The TPS detects this movement and sends a signal to the ECU, which then adjusts fuel delivery accordingly.

Q: What are some common symptoms of a faulty TPS?
A: Common symptoms of a faulty TPS include rough idling, poor acceleration, stalling, hesitation when accelerating or decelerating, and decreased fuel efficiency. In some cases, it may also cause trouble codes to appear on the dashboard.

Q: How do you test a Throttle Position Sensor?
A: Testing a TPS requires connecting an OBD-II scanner to your vehicle’s diagnostic port. Once connected, you can check for any trouble codes related to the TPS or its associated components. You may also need to perform voltage readings in order to determine if there are any faults with the sensor itself.

Q: What are some common causes of failure for Throttle Position Sensors?
A: Common causes of failure for TPSs include wear and tear due to age or excessive heat from an overheated engine, as well as electrical faults due to damaged wiring or corrosion on exposed contacts. Other possible causes include faulty sensors themselves or problems with other components in the vehicle’s fueling system such as fuel injectors or vacuum leaks.

In conclusion, the p2135 throttle position sensor is an important component in an automobile’s engine that helps regulate the engine’s performance. It is responsible for detecting the position of the throttle and relaying this information to the Electronic Control Module (ECM). This helps to maintain optimal performance across a wide range of driving conditions. By replacing or repairing a faulty p2135 throttle position sensor, drivers can help ensure their vehicles are running at peak performance and reliability.

Author Profile

Carl Frisch
Carl Frisch
With more than 30 years in the bicycle industry, I have a strong background in bicycle retailing, sales, marketing and customer service. I have a passion for cycling and a dedication to excellence. As a manager, I worked diligently to increase my capabilities and responsibilities, managing up to eleven mechanics (at Palo Alto Bicycles) and later as a working partner in my own store.

As the shop owner of Spoke n’ Word Cycles in Socorro, NM, the success of the mission was my responsibility, which I pursued passionately since we opened in 2003 through the spring of 2011. I am adept at managing owned and loan inventory, preparing weekly & annual inventory statements, and managing staff. The role as managing partner also allowed me tremendous freedom. I used this personal freedom to become more deeply involved in my own advancement as a mechanic, to spearhead local trail building, and advocating for cycling both locally and regionally.

As a mechanic, I have several years doing neutral support, experience as a team mechanic, and experience supporting local rides, races, club events. I consistently strive to ensure that bicycles function flawlessly by foreseeing issues and working with the riders, soigners, coaches and other mechanics. Even with decades of experience as a shop mechanic and team mechanic, and continue to pursue greater involvement in this sport as a US Pro Mechanic, and UCI Pro Mechanic.

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