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

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: Car is giving codes P0032 and P0038 and stalls

Hi there. Diagnoses needs to be performed. As you already know, replacing components can be expensive and time consuming without resolution. The P0032 and P0038 codes could be the result of a blown fuse, a wiring issue from the PDC...

Q: Car electrical problem

Hello. This is a difficult problem to fix. The most likely cause of your problem is either a short to ground or broken wire in the wire harness, which is positioned behind the dashboard. It often requires replacing the entire...

Q: Charging system failure???????

It depends on the tools you have. If you have a voltmeter, then you can check the voltage at the battery posts when the engine is running. When you do this, make sure that you turn on the normal accessories...

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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...