Q: My car engine shuts off while stopped or slowed down

asked by on

My cars engine shuts down whenever I slow down or stop my car. It's not frequently but it has happened a few times. There are no indicators that anything is wrong(no check engine sign). How can I find out what the problem is if there are no indicators?
My car has an automatic transmission.

This is a common sign of a failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine. When you accelerate, the engine RPM increases, and as you let off the gas, the RPM slowly returns to the normal idling speed. This is all monitored by the idle air control valve. Your car seems to When the engine RPM drops below the normal range of 750-800 RPM (for most cars), this may indicate 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. My car engine shuts off while stopped or slowed down

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: Car won't start after getting gas

The most common cause for this hard or no start after getting fuel is the purge valve is leaking fumes to the engine while fueling the vehicle. You should first have any computer codes checked by scanning the computer and...

Q: 2005 Hyundai Santa Fe will go in reverse but won’t move in drive

What you are describing is often a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer...

Q: My car cranked and ran for about 10 minutes. When I started to drive it shut off. Then it would not crank again.

The first thing to look for is air leaks. any air that gets into the engine without going through proper channels will lean out the system and cause problems. Look under the hood for any rubber hoses or boots that...

Related articles

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...
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.