Good afternoon everyone hope all is well. My mother owns a 2019 Jeep Grand Cherokee Limited and has 51,908 miles. Rough idle but drives fine. It's been goin on for now three weeks. I've used three different brands of fuel treatments every fill up but the rough idling still persist. I've looked all under the hood for any vacuum disconnections or leaks and there's none. What could be the cause of the rough idle? It doesn't burn gas bad nor does it have trouble starting
Have you scanned for codes and live data? That should be the first step in diagnosis if there's nothing obvious like a loose vacuum hose.
We haven't which I know I should've mentioned this as well but no check engine light is present
Just because there's no check engine light doesn't mean there aren't pending codes or suspicious items in the data.
Oh, didnt know that
have you checked basic stuff? air filter, spark plugs, etc?
https://www.youtube.com/watch?v=NWCKvU2FmDc
spark plugs