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Ford Bronco Rough Idle

Learn if it's a simple fix or time to seek out a trusted technician.

What are common reasons my Ford Bronco has a rough idle?

While there are a variety of reasons your Ford Bronco has a rough idle, the most common 3 are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
34%
of the time it's
Vacuum Leak
21%
of the time it's
Spark Plugs
15%
of the time it's
Ignition Coil

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Engine idles rough for a few seconds at start up then idles normal until next start up. This occurs whether or not t...

Related Ford Bronco Problems

Find the most common driver-reported problems that are to blame when a Ford Bronco has a rough idle.
Rough idling is often caused by ignition wires that are routed wrong or installed with damaged tips.
Rough or unstable idling could be caused by the idle control valve and throttle plate being plugged with carbon.

Ford Bronco Rough Idle Repair Symptoms

A failing ignition coil will create misfires in the engine, and lead to hesitation, extreme power loss, engine stalling, poor fuel mileage, and illumination of the check engine ...Read More
As we discussed, spark plugs are necessary for any gasoline engine to run. When they fail, the engine is in a constant state of attempting to ignite air and fuel, but cannot. Th...Read More