Q: My car studders when the gas pedal is pressed.

asked by on

I have an 09 chevy aveo LT and for about 2 weeks (gradually getting worse) when I press the gas pedal it studders 3 to 4 times before actually moving and shifting. It's like it wants to go and talks itself in and out of it 3 to 4 times then eventually agrees to move foward. It does have a hold light that flashes but all my Manuel says is about turning it on during the winter to help with traction. Nothing about it just being on. I have checked to make sure it's not on by mistake and it's not. I would just like a narrow down , one page says it's my wheels, another transmission, vacuum to engine, and fuel pump. Any advice is greatly appreciated!

My car has 101000 miles.
My car has an automatic transmission.

This may be a sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of a vehicle. The sensor is usually located on the butterfly spindle/shaft so that it can directly monitor the position of the throttle. This sensor relays the position of the throttle plate (also called the butterfly) relative to your foot’s position on the gas pedal and associates the two in the ECU.

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 applying the gas pedal. I would suggest having a professional from YourMechanic come to you home to diagnose the stalling and/or replace the throttle sensor ad necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. My car studders when the gas pedal is pressed.

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: Won't start without block heater 2004 Chevrolet Aveo

Hello - oil can get surprisingly "thick and gooey" when cold (think molasses). This makes starting your engine in cold weather more difficult. Check your owners manual to be sure you have the correct viscosity oil for winter driving performed...

Q: 1990 Toyota pick up 22re I just got it in time okay soon as you touch the gas feet it dies ever time so I gave up and its set for

This is typical of a bad idle air control valve. An idle air control valve allows the engine to idle properly by allowing the proper mixture of air and fuel at idle speed. This can also happen when there is...

Q: leaking fluid and nothing fixes it

Hey there. It sounds like you have replaced the majority of the parts related to the cooling system. I assume you mean the water pump shaft seal in your description. If so, I would recommend taking the truck back to...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...