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Hello, mustangs been acting weird, after driving for a bit makes slight tapping sounds. Then after a little more while that it sits and idles the tapping gets loud and makes knocking type sounds check engine light comes and goes first time started flashing though. Turned car off and back on...

Has anyone experienced this sometimes when in neutral or rolling slowly when revving the car it sounds normal, other times it sounds very quiet and like no airflow is going through the exhaust ant doesn’t go past 3k rpm, driving is normal only when stopped and when you rev it.

Hey guys have a 2019 gt performance package when driving any gear any speed mainly see it on highway the vacuum gauge goes back and forth and can hear the engine noise go up and down with it rpm’s don’t move does it when keeping steady throttle input or cruise control no lights or anything just...