Skip the auto shop - Our mechanics make house calls

Q: My car is having trouble idling.

asked by on

This will be the 3rd time that this same problem has happened. When starting my car it will start up fine but then die unless I give it gas, it just will not idle. I can start it up and hit the gas and try and keep it running for awhile and usually it will temporary fix the problem. Sometimes it will idle really low and the car will kinda stutter or shake. The first time this happened I ended up replaceing the Cam Sensor and it fixed the problem for about a year or so. 2nd time I tried cleaning the air intake valve, fixed it for about another year or so. Now it has come back. Sometimes it will start up just fine, other times it won't. It's a manual so I can kinda keep giving it gas and get places that way but if it is out of gear and I'm not giving it gas it will die. If it is in gear and I'm going down the highway it won't die but soon as I take it out of gear and put it in neutral it will die. Please help.

My car has 150000 miles.
My car has a manual transmission.

A: You may have a dirty or failing idle air co...

You 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. 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 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

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: I have an 05 Liberty CRD. It is stalling out at idle or when pulling up to a red light. This very random.

Hello there, thank you for asking about your 2005 Jeep Liberty. This is typically a common symptom of a failing idle air control valve, which is a unit that monitors the air intake as it is mixed with the fuel...

Q: Buzzing noise and shaking in the front end of the car

Hi there, thanks for writing in about your 2000 Chrysler Cirrus. The buzz is most likely coming from the blend door actuator motor on the evaporator case under the dash. The actuator would need to be verified as to which...

Q: Idles very rough when heater/defroster is on

Hello, thank you for writing in. The vehicle is put under extra load when the climate control is turned on. The engine is impacted different ways by the different systems. Typically when the defroster is turned on, it uses the...

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...