Q: Poor idle low on stop light

asked by on

Hi Mr Mechanic my 2010 Corolla in the morning is fine but after warms up my idle goes low and on stop light whants turn off can you please tell me what's the problem thanks

My car has 144509 miles.
My car has an automatic transmission.

This may be likely related to what is called an idle air control valve/module. This unit regulates the air flow into the motor at idle or low speeds as it is mixed with fuel prior to being injected into the motor. When this is not functioning properly, this will cause a rough or low idle or sometimes cause the car to stall. I would recommend having an expert from YourMechanic come to your home to diagnose the rough idle firsthand and fix your low idle problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Poor idle low on stop light

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: Wobbling, veering at freeway speed

Hi there. In most cases, the issue you are describing is caused by a suspension component or steering component breaking or failing, ranging from a strut, wheel bearing, tie rod or even stabilizer bar bushing. It's also common for an...

Q: i have an infinity g37s.. sometimes when the car is at idle temperature gauge goes up but i drive goes to normal fans r workink

Claimed by Jeff Engstrom

Q: Changed battery, now the engine "chugs" at idle and while accelerating

If you disconnected or connected the battery with the key on or any accessory activated then you may have damaged the computer of the car. Firstly, have the Check Engine Light scanned to see what code is stored in memory....

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...
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...
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.