Skip the auto shop - Our mechanics make house calls

Q: Car not accelerating - 2007 Kia Spectra

asked by on

At random, the car stops accelerating. Usually happens when I've stopped at a traffic light, and once I hit around 20mph, it quits accelerating. I will stop the car, turn it off & back on. Then it accelerates fine again.

My car has 98000 miles.
My car has an automatic transmission.

Hi. This sounds like you have a bad throttle position sensor or idle air control valve is going bad. Both of these sensors can cause the car to stall at low speeds and have trouble accelerating. These sensor help read and control the air fuel mix and position of throttle plate when the gas pedal is pressed. I’m not sure if the Check Engine Light is on or not but I suggest you have your cars computer checked for engine codes. If you would like to have this done, a qualified mechanic from YourMechanic can come to your home or office to diagnose the stalling problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 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. Car not accelerating - 2007 Kia Spectra

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: Change or repair engine

Hello. In most cases, it is more cost effective to install a rebuilt or even a new "crate" motor, than to repair a seriously damaged engine as you describe. The economies of scale for new engines have lowered the cost...

Q: Can't get battery out of car

Hello. The most common cause of this is a failing battery. It sounds like your battery may be bad so it should be load tested. There is also a common issue with the ignition switch failing. If you cannot get...

Q: Power steering cost and repair.

Billing question sent to CS for the cost of diagnosing the power steering system and the cost to repair the power steering system on a 2009 Kia Spectra with a L4-2.0 engine.

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.