Q: Car sputtering and dies

asked by on January 18, 2017

For a while now I've noticed after driving then come to a stop there's a rough idle and rpm drops a little. Now the Car started then sputters and dies. Now doesn't start at all.
My car has an automatic transmission.

Hi There, It sounds like you may have a dirty or failing idle air control valve causing your engine idle to fluctuate and eventually stall. The idle air control valve is a small valve on the engine’s intake system that reads the air intake as it comes into the motor. This is controlled by the car’s ECM which uses this information to make adjustments to the air/fuel ratio depending on various inputs such as outside air temperature, intake air temperature, load and various other things. As you accelerate, your car’s engine is receiving a much higher dose of fuel than when at idle and conversely, when you let off the gas pedal, there is a sudden change in this fuel supply as a result of your foot letting off the pedal. When this happens, the job of the idle air control valve is to bring this deceleration down to a slow and smooth idle rather than suddenly cutting off the fuel supply causing the motor to die. When the idle air control valve is not working properly, this cause a disruption in this process resulting in the engine not being able to idle properly. I would recommend having a professional come to your location to diagnose and inspect your vehicle.

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

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

Hi i have a 2009 dodge journey and it drives great but if you get over 70mph it starts pulsating. What could that be?

Hello, thank you for writing in. 85% of the time, when you have issues driving at high speeds, specially when you can feel them and hear them, you have an issue with your tires. The best place to start is...

I stomped my gas and it backfired out of the tail pipe

Hello. Backfiring can be caused by many things. A few common causes are low quality fuel or problems with the fuel, ignition issues, or a problem within engine management systems. If the vehicle is filled with low quality fuel, it...

Front steering/suspension shaking while braking

Hello. It is possible that you could have a control arm bushing that has failed. When a control arm bushing fails and the brakes are applied, the vehicle will display these exact same symptoms that you described. I would recommend...

Related articles

The Top 5 Selling Cars in Arizona in 2012
Depending Depending on where you live in Arizona, the weather is either arid or there may be periods of heavy snow – such as in the mountain areas. The vehicles that have been popular in previous years for the area,...
The Best Used Cars to Buy for Dog Owners
Dog Dog owners are a special breed of drivers. When they shop for a used car they have a list of requirements that can be quite different from other drivers, which tends to make the process a bit of a...
A Buyer’s Guide to the 2010 Dodge Viper
2010 2010 was the last production year for the Dodge Viper before it took an extended leave of absence from the automaker’s lineup. It would debut once more in 2013. The 2010 Dodge Viper is a two-seat roadster (convertible) and...