Q: If I have a bad throttle position sensor will my car hesitate to start

asked by on

My truck hesitates to start and know my gas pedal is not working

My car has 19700 miles.
My car has an automatic transmission.

Hello There, I believe you are correct in that you may have a faulty throttle position sensor. There are trouble codes that are typically associated with the TPS. One code will set if the TPS voltage is too high when the computer expects to see it lower. Another code will set if the TPS voltage is lower than the computer expects to see. The TPS code for low voltage is the most common and will usually set if the TPS is out of adjustment or the sensor has failed. The first thing you should do when you get a TPS code is to check adjustment and signal output of the TP sensor before replacing it. Be sure to wiggle all connections while watching scan data/voltage readout to make sure the problem is not a loose or bad connection. One of the most common symptoms of a failing TPS would be a tip-in hesitation or stumble when you apply throttle to take off from a stop. This can be caused by a dead spot in the TP sensor’s internal circuitry, which usually causes the output voltage signal to not change (or it drops out) when the throttle opens. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. If I have a bad throttle position sensor will my car hesitate to start

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

Get a quote

What others are asking

Q: Q: My truck will not start at all!

Hi there. It looks as if you had a lot of work done in a very short period of time. This might have led to a minor mistake that could have prematurely drained your battery. In some cases, the battery...

Q: Chain guide lost the top-fixed guide bolt

Assuming you are referring to the timing chain guide, this may not have necessarily ruined the motor. However, you will have a mess on your hands to clean up. If the bolt has been lost somewhere inside the motor, hopefully,...

Q: Car getting noisier

This vehicle has recalls for the rear suspension due to possible fracture, and failure, of the rear control arms. My first recommendation is to have any and all recalls done to see if the noise was due to the recall...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...