Q: Q: Stalling at low speeds and idle.

asked by on

Hi, my car stalled yesterday at a red light, before this happened, about a day before, the lights on my dashboard and clock/radio flickered, dimmed, and then went bright again. Right after this happened, I was braking for the red light when my car jolted forward, causing me to almost rear end someone. My foot was no where near the gas pedal when it did this. Also, when i am sitting idle, my car will rev up like I was tapping the gas, only to about 2RPM but my car will be in park. Could you please help me to possibly have some options of what this could be?

My car has 52000 miles.
My car has an automatic transmission.

You may have 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. Since 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 with the help of the idle air control valve. When the engine RPM drops below the normal range of about ~800 RPM, this often times will cause the engine to stall indicating a dirty or faulty idle air control valve. 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. Q: Stalling at low speeds and idle.

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: Q: Over heating

There are a few possible causes for an engine to overheat. A low coolant level, failed cooling fan, faulty water pump, or clogged radiator can all cause the engine to overheat. The situation that you have described makes me first...

Q: Car won't start or crank ASD relay making rapid clicking noise when key out of ignition 1999 Dodge Intrepid

Hi there - you have pretty-well identified this problem yourself - well done! Yes, the Automatic Shutdown Relay appears to be sticking in the "power on" position, which is providing a power path to the fuel pump as well as...

Q: Q: Window not going up or down

Hi. This issue is common on Dodge Avengers. A malfunctioning master switch or an open circuit along the lines of your power windows is the culprit. Have a mechanic such as one from YourMechanic correctly diagnose the window issue more...

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...