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Hello, I have a 2011 Ford Crown Victoria (police interceptor) with 240k miles. I have had it for a couple years now. No check engine light but it’s running rough any idea?

Crown 


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Scanning for codes and live data might be a good place to start. You could also check the usual suspects such as vacuum leaks, filters, spark plugs, and fuel pressure.


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https://www.youtube.com/watch?v=NWCKvU2FmDc


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