Q: Engine idling
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?
Recommended Services
| Car idle is rough Inspection | $94.99 - $114.99 | Get a Quote |
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.
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
What others are asking
What do I do if the power windows don’t close properly?
You can troubleshoot the power windows if they fail to close all of the way. Stop the vehicle. The ignition must be in the on position. Hold the power window switch again for at least six seconds after the window...
Tires making whining noise.
The tread wall of the tires need to be checked for abnormal wear. Inspect the tires to ensure no steel chords are exposed on the tire. Run your hand across the inner and outer edges of each tire to see...
Vehicle overheated and messed up water pump
Hi there. The Check Engine Light came on due to the extreme temperature your vehicle reached. Your sensors will light up the Check Engine Light as a warning to shut off and cool the engine. A damaged water pump/ hoses...
Engine came on and we took it to Autozone. Code read P0430
Hello. This issue can be caused by a failing catalytic converter (https://www.yourmechanic.com/services/catalytic-converter-replacement) or by a bad oxygen sensor (https://www.yourmechanic.com/services/oxygen-sensor-replacement). As for driving the vehicle, if it is not lacking any power then it should be fine to drive. The only...
Very rough idle goes away at speed. Can it be the cam solenoid?
Hey there. This may be related to a dirty or failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine at low speeds...
Hi, Carlos. Just had charcoal canister
Hello. I would need to know what kind of vehicle this is in order to be able to fully help you. From what you are explaining though it sounds like you have have a purge valve issue. Typically the purge...
Engine Light On - System Too Lean.
Hi there. Check the mass air flow sensor (MAF) and see if it got unplugged. When the oil change was done, most likely the air filter was checked and the MAF sensor was disturbed. Also, check all of the vacuum...
2012 genesis 3.8 shifts hard. What cost am I looking at to replace transmission
The shift issue should be diagnosed first especially considering the low miles on the transmission. It would be unusual for a transmission with only 78,000 miles on it to require total replacement (versus on the vehicle service). Anytime you are...
Maybe transmission
Hi Aiden. Thanks for contacting us tonight. With nearly 250,000 miles on your Nissan Altima, it's quite possible that an inner transmission seal is leaking, causing the shifting issues you are experiencing. It's also possible that you simply have contaminated...
Related articles
How to Remove a Car Battery
An auto battery helps power car electrical systems. To remove a car battery, you will need work gloves, safety goggles, and basic hand tools.
How to Use a Prius as a Generator
Being Being without electricity due to natural disaster or repair work being performed on electric lines in your region is at best an inconvenience and at worst life-threatening, especially when you depend on electricity for essentials like heat in the...
How to Ensure Fuel Injectors Are Receiving the Correct Voltage
Faulty fuel injectors affects fuel economy and can cause a misfire. Make sure your fuel injector receives enough power to work properly.
Browse other content
Maintenance
Cities