No, transmission problems aren’t caused by faulty spark plugs. However, if the spark plugs aren’t up to snuff, they could misfire and lower the transmission’s torque output. In doing so, the transmission is prevented from shifting gears, which can cause your vehicle to run rough and with less power.

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Can misfire cause transmission problems?

3) Problems with the transmission.You may have an issue with your transmission shifting up or down if your car begins to jerk as if there has been an engine misfire. At higher speeds, you’ll notice this more clearly. The same as with any other misfire, you should have it repaired as soon as possible.

What happens if you drive with a bad spark plug?

Using Faulty Spark Plugs While DrivingSome of the symptoms of faulty spark plugs include: misfires; hard starts; poor gas mileage; rough idle; lackluster acceleration; and an inability to get up to speed. It will be difficult to drive with a faulty spark plug because the engine may fail to work.

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