I noticed that my car was idling rough in drive reverse and park lack of power after driving about 400 miles. I started checking iac adjusting timing etc. I decided I’d have a shop look at it and see if they could diagnose, on the way there I felt a jolt then heard a grinding noise and now when it’s idling it stalls in drive and I hear a grinding noise underneath mid to right side under passenger seat once I get in second gear the grinding goes away. I got to the shop but was wondering if anyone knows what that could be