Q: Rough idling

asked by on February 12, 2016

The car idles rough.

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Hello. This could be caused by a variety of things. It could be that your spark plugs or coil packs are misfiring. This means that the coil pack is not sending the proper electricity to the spark plug. It could also mean that the spark plug is not using the electricity from the coil pack properly. Another possibility is that you may have a vacuum leak. A vacuum leak happens when air leaks from something that air shouldn’t be leaking from. This would cause the truck to run rough. You could also have a problem with the mass air flow sensor or cam sensors. These are sensors controlled by your car’s computer, and if the computer reads that these sensors are not working, the Engine Light will come on and the truck could run rough. I would recommend a diagnosis of the truck by a certified technician, like one from YourMechanic. They will be able to determine what is causing your engine to run rough and make the necessary repairs.

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