Skip the auto shop - Our mechanics make house calls

Q: About every 2-3 weeks the car will just stall, usually when stopped or slowing down. What is wrong?

asked by on

it used to stall more often but after the cam sensor was changed it didn't do it for a long time then about 2 months ago it started doing it again what could be the problem also sometimes it will seem like the car loses power and I will look down at the gages and the rpm's will be jumping up and down do you know what may be going on unless its just getting tired when the car stalls if you put it in neutral it will start right back up

My car has 209000 miles.
My car has an automatic transmission.

This may be related to 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. This valve is controlled by the vehicle’s computer which 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. This is all controlled by the idle air control valve. When the engine RPM drops below the normal range of 750-800 RPM (for most cars), 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?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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. About every 2-3 weeks the car will just stall, usually when stopped or slowing down. What is wrong?

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: Where is my crankshaft position sensor on my 2001 Mitsubishi Montero

Hello. The crankshaft position sensor on your engine is located right above the front of the crankshaft behind the timing cover. The cover will have the be removed in order to replace it. If you need some help with this,...

Q: Auto Zone said the case regulator vail is bad. What is that?

If you are referring to the crankcase pressure regulator valve (CPRV), that valve is a part of your car engine's crankcase ventilation or breather system. A common application is on Audi models. If you have an Audi please note that...

Q: I'm getting two ignition coils replaced on my 2007 Honda Fit and it will cost me 280 without labor. This sounds weird

Hi there. If your engine is stalling out on you and the shop has said that the issue is your ignition coils, try checking the coils and see if there is a spark coming out of them by removing the...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...