Skip the auto shop - Our mechanics make house calls

Q: Car acts like I hit the brakes when I first hit gas

asked by on

This used to happen a little, but it's happening more frequently now. When I first begin rolling forward and press on the accelerator, the car acts like I slammed on the brakes. If I ease up on the gas, the vehicle will then usually accelerate with no problems. If I come to a stop and then try to get rolling again, it acts like I hit the brake again. I haven't noticed any slipping or abnormally high RPMs. The check engine light came on recently while I was having the issue. Plugs have been changed. What else would cause this issue?

Hi there. This can be caused by a number of things, but the most common is a sensor issue. Most of the time this is caused by an issue with the throttle position sensor or the throttle body itself. If the sensor is not reading correctly, the vehicle will more or less stumble when you try to accelerate.

If there are Warning Lights on, such as the Check Engine Light, I typically start by scanning the computer for codes. The codes will help to determine the issue. It can be a transmission issue, but that is not as common. If you plan on having this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your Check Engine Light and make any repairs that are needed.

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 acts like I hit the brakes when I first hit gas

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: Shift lever wont go in park or other gears

Hello, thank you for writing in. It is possible the shifter cable or its related components are damaged. They are typically visible from the bottom of the transmission. It should not be hard to inspect that area if you can...

Q: Shocks or struts

Hi Greg. Thanks for contacting us today. The basic rule of thumb is that shocks last about twice as long as struts. However, as a vehicle ages, the shocks take on more abuse. It's always best practices to replace the...

Q: gas pedal problem

It sounds like you have a problem with your pedal position sensor or throttle position sensors. Using a scan tool, test the pedal position sensor by reading the output of the sensor as you slowly press down on the pedal....

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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.