Q: My car will only turn on when my foot is on the gas but turns off when its not

asked by on

My car will only turn on when my foot is on the gas but turns off when its not

My car has 200000 miles.
My car has an automatic transmission.

Hey there. This could be from a couple of potential problems. Your car has what is called a throttle position sensor which monitors the position of your foot on the gas pedal and relays this to the computer which then tells the fuel injection system how much fuel to inject into the motor. When this is not working properly, this can cause intermittent running conditions including what you describe. I would recommend having an expert from YourMechanic come to your home to diagnose the hard start and follow through with the correct repairs.

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
  1. Home
  2. Questions
  3. My car will only turn on when my foot is on the gas but turns off when its not

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: Car won't start after I changed the fuel pump. It was dying and back firing before I changed it. Could it just be low on gas now?

Hi, thanks for writing in. I recommend listening to hear if the fuel pump is running during cranking, and checking fuel pressure. Should be at least 10 psi. If the pump is not running, check the fuel pump fuse(s) and...

Q: I have a manual car and it does not go to gear 2001 Nissan Sentra

Hello - first task is to check the clutch fluid reservoir (may be shared with the brake master cylinder - both use brake fluid) for correct fluid level. If fluid level is correct, most likely the clutch hydraulics - slave...

Q: Q: AC not working

The air conditioning system is complex as there are many parts working together. The most common issue with the system are leaks. If not repaired correctly, the system will degrade from the inside. Air or moisture in the system will...

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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.