Skip the auto shop - Our mechanics make house calls

Q: Rough idle.

asked by on

I have changed plugs but still idles rough. Any advice?

My car has 75000 miles.
My car has an automatic transmission.

A: The manufacturer has a technical service bu...

The manufacturer has a technical service bulletin that calls for all spark plugs and plug wires to be replaced and then the engine computer reprogrammed to a new level using the factory DRBIII scanner. It is also possible that your car has a vacuum leak in the system, in which you would need to have the vacuum replaced.

To have the re-called spark plugs repaired, you can try to visit your dealer. However, if the problem is not solved by the manufacturer, I would recommend having the vehicle diagnosed by a mechanic, such as one from YourMechanic. They can come to your home or office to scan the computer and check the intake system to see if you have any vacuum leaks.

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: Squealing brakes

Your brakes can squeal for a number of reasons. If the brakes are worn out, then the wear indicators can make noise. If the brakes have glazed over from heat then this can occur also. I start by removing the...

Q: Gear shift stuck in park.

The most common cause is the gear shift selector mechanism plastic lock release in the center console falls apart. The fix is to replace the shift control mechanism under the center console. There may be some aftermarket repair parts available,...

Q: Are the motor mounts touched during a tune up? When are the motor mounts touched?

There is nothing in a basic tune up that would require loosening or touching the motor mounts. If the motor mounts are in fact loose, they could potentially cause damage to the axles if the motor were to shift enough...

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...
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...