Q: Car running and idling rough

asked by on February 09, 2016

The Check Engine light is on, and my car is running and idling rough.

Check Engine Light is on Inspection $79.99 - $99.99 Get a Quote
Car idle is rough Inspection $79.99 - $99.99 Get a Quote

Hello. It is possible that your vehicle would need a complete tune up and/or a Check Engine Light inspection. I would have a certified mechanic scan your vehicle’s computer for codes to diagnose your Check Engine Light. These codes may be relevant to the rough idle. The mechanic will be able to determine the cause of your car’s rough idling issue.

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

Car shaking and dying

The battery will drain quickly when continually trying to start the engine, if the engine doesn't run long enough for the alternator to keep the charge of the battery. The stalling may come from an issue with air metering, or...

Can't pass smog check due to Check Engine light.

In your case I would recommend getting a second opinion. Enlist the help of a professional, such as one from YourMechanic, to scan your vehicle for trouble codes. The check engine light and the smog test failure are certainly related....

Check engine code P0420 and P0420p consistently come up even after erased. Slight smell of fuel when car is stationary.

Diagnostic trouble code p0420 is for a catalyst efficiency below threshold. Meaning, the control module is receiving a signal that the oxygen sensor is reading a post converter signal that the catalytic converter isn't doing its job. This could be...

how to replace the intake manifold gaskets on a 2003 buick Lesabre

When an intake manifold gasket fails, it can leak coolant into the engine and contaminate the engine oil, so in some cases it will be necessary to change the oil in conjunction with this service. Vehicles with plastic intake manifolds...

Car pulls to the right at different speeds

Thanks for writing in about your 2012 BMW 535xi. There are several potential causes for the car to pull in one direction. The pull you're feeling may just be due to the crown of the road. Other potential causes include...

Can it be the PPS sensor? or the app sensor?

Hi. First question to ask is if the Check Engine light is illuminated? If any portion of the electronic throttle malfunctions, it should automatically turn on the a warning light, and go into engine "limp mode" with limited power and...

Power steering leaking

Hello. It would first be necessary to pinpoint where the leak is coming from by doing a power steering system check. Once the origin of the leak is found that component would need to be replaced. I recommend having a...

The high beam dash light stays on after the engine is shut off and the key is removed.

I suspect that the high beam headlight relay has burned contacts, and is sticking and "back-feeding" power to the high beam indicator. It could also be a problem with the digital dashboards GM put out during these years. Disconnecting the...

Car is jerking, and Check Engine Light flashes

When the Check Engine Light is flashing, it is telling you that the engine has a problem that may be causing damage to your catalytic converter assembly. The most likely problem is an engine misfiring from an ignition problem, such...

Related articles

P0907 OBD-II Trouble Code: Gate Select Position Circuit High
P0907 code means there is an issue within the vehicle's transmission gate select position circuit often due too wiring or rarely, the PCM.
P0782 OBD-II Trouble Code: 2-3 Shift Malfunction
P0782 code means the PCM has detected a problem with the 2-3 shift function often due too faulty solenoids or transmission failure.
P0032 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 1 Sensor 1)
P0032 trouble code definition P0032 is the code for HO2S Heater Control Circuit High (Bank 1 Sensor 1) What the P0032 code...