Skip the auto shop - Our mechanics make house calls

Q: Engine idling

asked by on

When I'm driving high speeds on the highway, my engine idles every now and then. A friend suggested that I get some dry gas and that solved the problem for a while. My dealership wants to replace the IAC, but my friend says it could be cleaned instead - much less money spent that way. Is that true?

A: I would try to have the idle air control va...

I would try to have the idle air control valve cleaned first. Then if that does not work then have it replaced. You may save some money. Whether you decide to clean it or replace it, have the throttle body cleaned out. Getting the carbon cleaned out will affect the idle. If you need help with this, have a certified mechanic, such as one from YourMechanic, inspect your car's idling issue, and make the necessary repairs for you.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Engine tick and check engine light.

Hello, thanks for writing in. It is possible that you have a fuel injection issue, but that is not that common on this vehicle. Most of the time when this occurs with a ticking noise also it is due to...

Q: Transmission is behaving strangely

Hi there, they are correct in stating that it has a continuously variable transmission (CVT). These types of transmission do not in fact shift gears, because they use an adjustable gear ratio instead of shifting to different gears. This makes...

Q: What does it mean when the harmonic balancer wobbles?

Hi, thanks for writing in. When the harmonic balancer is wobbling, it would be best not to run the engine. The harmonic balancers function is to counteract the vibrations in the engine so damage doesn't occur. When it fails, it...

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...