Hi everyone, my Wrangler JL idles at 800 RPM without any noise after warming up. Then after about 7 to 8 minutes of idling, it automatically goes up to 1000 RPM, and there seems to be a thumping sound. I asked many places, and they said it's not knocking. Does anyone else have a similar issue with their Wrangler? Any explanation or help would be appreciated since there are no fault codes.

Whose car idles at 1000 RPM when warming up, and has anyone fixed it?

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It's normal for the idle speed to fluctuate when you turn on the air conditioning in a 2013 1.6 manual fashion model. Sometimes the RPM might go up to around 900 or almost 1000, and other times it might be around 800. If you restart the engine and the RPM goes back to around 800, it's usually not a cause for concern.