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Jeep Wrangler Rough Idle

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

What are common reasons my Jeep Wrangler has a rough idle?

While there are a variety of reasons your Jeep Wrangler 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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Related Jeep Wrangler Questions

See what others are asking about their Jeep Wrangler. Get answers from RepairPal's community of auto experts and enthusiasts.
Also when im driving down the road the rpm needle goes up and down slightly
Engine light comes on and idles rough. code states battery tempurature problem. runs fine other then that.

Related Jeep Wrangler Problems

Find the most common driver-reported problems that are to blame when a Jeep Wrangler has a rough idle.
Ignition wire failures can cause a rough idle or intermittent engine misfire and there might not be a check engine li...
The throttle position sensor (tps) may fail causing intermittent drivability problems like hard starting, stallin...
Jeep Wrangler Repairs and Prices
All costs based on RepairPal Fair Price Estimate™ averages. Actual prices may change depending on final diagnosis.

Jeep Wrangler 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