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Jeep Grand Cherokee Rough Idle

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

What are common reasons my Jeep Grand Cherokee has a rough idle?

While there are a variety of reasons your Jeep Grand Cherokee 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 Grand Cherokee Questions

See what others are asking about their Jeep Grand Cherokee. Get answers from RepairPal's community of auto experts and enthusiasts.
Check engine light came on and engine began idling rough. mileage went down to 12 mpg and exhaust smells inside car....
Problem more when eng. is hot

Related Jeep Grand Cherokee Problems

Find the most common driver-reported problems that are to blame when a Jeep Grand Cherokee has a rough idle.
The engine may develop a rough idle after cold start with the check engine light illuminated and code p050d stored. o...
The engine may develop a rough idle after cold start with the check engine light illuminated and code p050d. addition...
Jeep Grand Cherokee Repairs and Prices
All costs based on RepairPal Fair Price Estimate™ averages. Actual prices may change depending on final diagnosis.

Jeep Grand Cherokee 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