Q: Throttle Position Sensor

asked by on February 11, 2017

Got tune up and new throttle body and it's still doing it. Someone said maybe a pedal sensor ?

My car has 138000 miles.
My car has an automatic transmission.

Throttle Position Sensor Replacement $144.21 - $717.44 Get a Quote

Hi There, It sounds like what you are describing is an intermittent throttle response when pressing the gas pedal. If this is correct, this may be related to the throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the gas pedal. Based upon the inputs from the sensor reading your foot’s position on the pedal, the ECU then makes the direction to supply more or less fuel to the motor. When this sensor is not working properly, this can cause intermittent responses when pressing the gas pedal. I would suggest having a professional from Your Mechanic come to you home to diagnose and inspect your vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Car overheating with new radiator
You might also have issues with your radiator cooling fan. It should spin most the time when you have your air conditioning turned on. You might also either have a clog in your system or internal engine issues. A qualified...
Can't get distributor times correctly
You will need to set the crankshaft to No. 1 top dead center or TDC. There should be marks on the crank pulley that indicates where this is. If you have already done this, you may be 180 degrees out....
Radiator leaking from crack in top
This is pretty common. The metal gets very thin from cooling system wear, and the tank cannot hold the pressure any more and splits. I recommend replacing the radiator (https://www.yourmechanic.com/services/radiator-replacement) and testing the complete system for any other problems.
My all wheel drive light keep going on and off. My abs light stays on.
There could be a wheel speed sensor that could have failed and is not functioning properly that is causing the ABS and AWD lights to come on. The AWD light will come on in the event that the transmission is...
Stalling
Hi there. What you are describing is quite similar to a fuel restriction or a problem with an fuel to air ratio sensor or component. Some common parts that can cause this problem include clogged or dirty fuel injectors or...
Stuck in limp mode ECM Throwing P2118 code, throttle body actuator, does it absolutely NEED to be replaced? 2008 Scion xB
Hello - for your P2118 (https://www.yourmechanic.com/article/p2118-obd-ii-trouble-code-throttle-actuator-control-motor-current-range-performance-by-spencer-clayton) problem - there is a separate fuse for the electronic throttle control (ETCS) - 10a I think - in the engine bay. Check that fuse first to see if the reverse jump killed it...
My check power steering symbol is showing up on my Lexus 2012 RX 350 and the car wont move an inch.
Hello. It sounds like you either have a broken belt or a voltage loss in the vehicle. If the battery is failing or if the alternator is failing then this will occur. I would check these first by having them...
Why will the car go into drive but won’t move??
Hi Ashley. Thanks for contacting us tonight. Sometimes this problem is caused by a damaged shift solenoid, contaminated transmission fluid or a torque converter that is wearing our or already damaged. It's also possible for internal transmission components to be...
2011 toyota pruis; code c1391 abnormal leak in accumulator, brake light and abs light on, brake fluid tank full
Hi Andrew. Thanks for the follow-up question. I've forwarded your question to our service and sales department so they can work up an estimate for you to have the actuator and accumulator on your Toyota Prius replaced. They'll contact you...

Related articles

Can Sensors Be Cleaned or Do They Need to Be Replaced?
In In most cases, sensors for your automobile will need to be replaced if they fail, but depending on the type of sensor and its location or function, some can be cleaned and reused (https://www.yourmechanic.com/question/can-sensors-be-cleaned-or-do-they-need-to-be-replaced). Sensors can come in many...
4 Essential Things to Know About Your Car’s Check Engine Light
The Check Engine Light turns on when there's an engine problem. A bad oxygen sensor or failed spark plug are common causes for the Check Engine Light.
Symptoms of a Bad or Failing Brake Booster Vacuum Sensor
A failing brake booster vacuum sensor will cause the brake pedal to be stiff or turn on the Check Engine Light.