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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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See what others are asking about their Ford Bronco. Get answers from RepairPal's community of auto experts and enthusiasts.
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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 can create several symptoms: Check engine light comes on Engine runs poorly or stall Increased emissions Reduced fuel economy Car won’t start I...Read More
When spark plugs fail, the engine will struggle. The check engine light will come on, and it may appear either solid or flashing. The driver would likely notice one or more of t...Read More