Q: Car stalled in stop and go traffic.

asked by on

Car stalled in stop and go traffic, lost power steering and acceleration. Was able to move car to median placed car in park and turned off the key. Re cranked the car and it struggled to turn over but eventually did. Have not had trouble with it since.

My car has 160000 miles.
My car has an automatic transmission.

Your car 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 making the transition from a higher RPM back down to idle speed. 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 replace 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. Car stalled in stop and go traffic.

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: My car have a RAF problem

Hello, thanks for contacting YourMechanic. When a vehicle is started up and about a liter of water emerges from the tail pipe, there is a problem. One problem is that you could have too much condensation in your pipes. The...

Q: ignition control module keeps failing

This could be either the ignition control module or the ECM which gives direction to the ignition control module. I would start by checking the power supply to the ignition control module to see if it is receiving any power...

Q: Car won't maintain an idle.

Hi there. Try turning on the ignition to the ’ON’ position 3 times with 30 seconds each time to see if the fuel system had air in the rail. This will help with the air in the system. When starting,...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...