Skip the auto shop - Our mechanics make house calls

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 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: Car does not start even after I jumpstarted it.

If the car is turning over but not starting then you will need to test for spark and fuel. I would have a technician look it over and test the starting system. If it is not turning over at all...

Q: Hi Peter, I've noticed that when my car shifts from first to second gear I hear a sound almost like metal grinding, it's not loud

The first thing I would recommend is to check the condition and level of your transmission fluid. It is very possible that dirty fluid or a low fluid level may cause this issue. If the fluid is low or dirty,...

Q: Seems to be an occasional misfire that is somehow related to the AC compressor

This is normal when the AC is on. The air conditioning compressor requires torque from the belt system on the engine to power it. When the AC is off, the compressor clutch does not activate, meaning the AC is not...

Related articles

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.