Q: Jerking forward at a full stop.

asked by on

My vehicle have a forward jerking sensation when i take my foot off the brakes at a stop or coasting forward not under load. As soon as i accelerate the jerking goes away. What might be causing this?

My car has 63000 miles.
My car has an automatic transmission.

This may be related to a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. As this valve is controlled by the vehicle’s computer, it will adjust idle speed based upon other measurements such as engine temperature, intake air temperature and electrical system load or voltage. When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed. In your case the idle air control valve may be misreading the load and relaying that it needs more fuel to the computer which then supplies more fuel than needed resulting in the forward lurching reaction. I would recommend having an expert from YourMechanic come to your location to diagnose and repair your idle air control valve.

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. Jerking forward at a full stop.

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: Fault codes P0098 and P0238 - 2011 Volkswagen Golf

Hi there. The two OBD-II error codes you posted including the P0098 OBD-II Trouble Code and the P0238 code are similar in many ways. The P0098 code indicates that there is an issue with the intake air temperature sensor...

Q: My engine won't idle after replacing the fuel injectors.

This sounds like potentially a idle air control problem. There is a component called an idle air control valve that regulates the amount of air flow at idle. When this is not operating correctly, the engine will not idle as...

Q: What does a vehicle speed sensor look like?

There may be a couple of things going on at the same time here. Is the Check Engine Light on? A vehicle speed sensor problem may illuminate the Check Engine Light if the lack of signal is causing shifting errors....

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...
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...
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...