Q: Stop at stop sign, give it the gas, it want go, let up, push down agin it goes,the engine does not die.!!!!

asked by on

Stop at stop sign, give it the gas, it want go, let up, push down agin it goes,the engine does not die.!!!!

asked by Dennis V on November 22, 2016

Stop at stop sign, give it the gas, it want go, let up, push down agin it goes,the engine does not die.!!!!

My car has 153000 miles. My car has an automatic transmission.

My car has 153000 miles.
My car has an automatic transmission.

What you are describing sounds like a dirty or 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 at low speeds and at idle. This valve is controlled by the vehicle’s computer and will adjust idle speed based upon other measurements such as engine temperature, intake air temperature and electrical system load or voltage. This is also an important function when starting the motor as it allows the motor to run and idle on it’s own once the motor fires. 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 while adjusting the air/fuel ratio constantly to allow this to happen smoothly. 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 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
  1. Home
  2. Questions
  3. Stop at stop sign, give it the gas, it want go, let up, push down agin it goes,the engine does not die.!!!!

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: Drives rough on highway

One of the most common causes of a vehicle to ride poorly is a wheel and tire issue. If your tires are worn unevenly, or if any of them have a slipped belt, a vibration or rough ride may result....

Q: My car is running fine but, today i hear a squealing sound when my car is turned on. What could this be?

Hi there. A squealing noise as you've described sounds like a belt noise. A loose, weakened, or stretched belt may be the culprit. However, a weak belt tensioner could also be the root cause of the noise. Either of these...

Q: 2004 Hyundai Santa Fey with rebuilt engine locked up

I definitely would bring the car back to the shop that rebuilt your engine to have them repair it. If the engine is locked up, it is locked up because something is broken internally, like a piston, rod, or a...

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...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...